Simple in design: the art of reduction

My good friend and client Stacey Williams made this shot on our Eigg workshop last week. I think it's highly atmospheric, effectively simple in composition and tonally very finely balanced. It tells me all I need to know without trying to spell it out either: there are no loud colours or over the top contrasts here, just an inner confidence to show you the beauty of one of Scotland's most photogenic beaches.

Bay of Laig, Isle of Eigg, Scotland.Image © Stacey Williams 2016, post-edit Bruce Percy

Bay of Laig, Isle of Eigg, Scotland.
Image © Stacey Williams 2016, post-edit Bruce Percy

And yet, to pull of a very simple composition like this is not easy for many of us. We struggle with the reduction that's required to distill a scene into one simple message.

I have a theory why this is.

For a long while, I've realised that when most of us start off making pictures, we tend to over complicate them. The final image often has a lot going on and within this complexity is the added dimension of tonal / colour conflicts. Photography is one of the few past-times where we start complex and spend a life-time aiming to make our photographs more effective by simplifying what we put into the frame (or perhaps more importantly, what we choose to leave out).

The reason why we start with overly-complex pictures is because we haven't learned to truly 'see'. Photography is a life-long discipline on being able to really see what is before us and translate that into an effective photograph and if we aren't really aware of tonal conflicts, or distracting objects in the frame, we will tend to leave them in. This is why we can often find our final image doesn't look the way we thought it would. We tend to 'see' differently at the time of capture than the way we 'see' when we look at an image on our computer screen later on.

I've been asking myself for a long while: why this is so? And the only thing I can come up with, is that we tend to look at scenery differently than we do when we look at images. The art behind many successful images is to be able to see the photograph within the scenery while we are on location. Many of us don't do this because we are overwhelmed by the elements of being there, and we still can't abstract a 3D location down into a 2D image.

But composition isn't just about where to place objects within the frame, and choosing what to leave outside of the frame. It is also about understanding the relationships between colours and tones within the scene. In fact, both are interrelated. 

Again, if you aren't able to truly 'see' the relationship between colours and tones within the frame, then the final image may be fraught with overcomplexity. 'I never saw that red telephone box in the corner of the frame', or 'the stone in the foreground is really dark and I can't recover it in post, I wish I'd noticed how dark it was at the time of capture'. This is a typical response because at the time of capture we were too busy thinking about stones rather than the tone or dynamic range of them and whether they would render enough detail in the final picture.

Visual awareness of what is really in front of us, is really at the heart of all of our photographic efforts. If we can't see the tonal distractions or see the conflicting colours at the time of capture, then it means a lot of massaging and coaxing in the edit phase, which isn't a great idea. In sound recording the idea of 'fixing it in the final mix' was always a bad approach and it's better to be aware of the problem at the time of capture and do something about it. If the colours are conflicting, then look for an alternative composition, if the stone is too black to render and will come out as a dark blob in your photo, then maybe go find a rock that is lighter in tone and will render much more easily.

Back to Stacey's picture. She chose a very empty part of the beach. She also chose some very simple foreground sand patterns that she knew were strong enough tonally, to attract interest. She also gave the background island a lot of space. The edit was very simple: we added a lot of contrast to the island to make it the dominant object in the frame, but we did it while doing almost nothing else to the picture because the picture was already working.

If you are struggling with composition, my advice would be to seek out simple empty places and work with one or two subjects within the frame. Add a rock into the picture and experiment with placing it at different areas. Also try rocks of different tonal responses. How would a jet-black rock look in this scene? Will it stand out from the background sand tones? How about a rock that is similar in tone to the beach? Will it stand out just as effectively?

The problem is, that what our eye thinks is pleasing, is often overly complex for our imagery. Good composition is not simply just the act of reducing down the subjects within the frame, but also of understanding which ones will work best tonally as well. Our eye loves more complex objects around us but they don't work when they are all crammed into one picture.

Good landscape composition is not something we master in a matter of weeks or months. It is a life-long journey in building up one's own visual awareness, of noticing what will work, and just as importantly what won't. If you're in it for the long haul, and you have a curious mind, then that's a very good start indeed.

 

 

Epiphanies in the study of light

When I look back over the past twenty years of my photography, I can remember many moments when I had an epiphany - a sudden insight, to what kind of light really worked well in a photograph.

Lago Nordenskjöld, from a secret location Torres del Paine, Chilean Patagonia.Shot in mid-afternoon light on an overcast day.Image © Bruce Percy 2015

Lago Nordenskjöld, from a secret location Torres del Paine, Chilean Patagonia.
Shot in mid-afternoon light on an overcast day.
Image © Bruce Percy 2015

If I summarise it, it would be down to this; 

I started out shooting in bright blue sky sunny days because my eye liked it. But I found my camera didn't as the pictures wouldn't come out the way 'I saw them'. The first epiphany was that camera's don't see the way we see, and what is exciting to the human eye, is too high contrast and hard for a camera to record.

Then there came the second epiphany: If I shot at sunrise or sunset, the colour was often beautiful and it gave my images a sense of magic (or glow) that I couldn't quite get during the sunny days I had been shooting in until that point. I learned that the light is warm at sunrise and that often the atmosphere of a place is often calm too. Midday light is a rather cool light in comparison to the warm tones of sunrise.

For a long while, I would do nothing but shoot at sunrise and sunset. It's a great learning experience to continuously work in soft light at these times of the day, and although we all seek those golden colours, they don't always suit the environments we're photographing.

Shooting the isle of Rum from the Isle of Eigg one overcast, rainy miserable day, in 2007 taught me so much about overcast light, and how beautiful it can be in a photograph.

Shooting the isle of Rum from the Isle of Eigg one overcast, rainy miserable day, in 2007 taught me so much about overcast light, and how beautiful it can be in a photograph.

After many years of working in this light, I found myself on a very wet beach one afternoon in winter and had another epiphany. Midday light worked too, so long as the light was very overcast. I hadn't up until this point, imagined I could get any kind of 'mood' to my work except by working during the golden hours, and since this moment back in 2007, I started to employ working at other times of day, providing that the light is soft.

Over the course of 10 years, I'd gone from shooting only in sunny light, to only shooting during the golden hours, and then finally, coming back to shooting in midday light, so long as the light was soft. My understanding of the kinds of light I could shoot in had altered and I knew that soft light works best.

And then another epiphany happened. Although I would shoot any location if the light was soft, at sunrise, sunset and in the middle of the day, I found that some of the images didn't work because the light had to suit the subject. For instance, the stark black volcanic beaches of Iceland work well if the light is very cold / monochromatic. Composing a monochromatic black beach with warm light seemed at times to be at odds with each other. The landscape didn't really need the warm tones of sunrise, and if anything it was a distraction.

Small ice floes in Laguna Armaga, Torres del Paine, Chilean Patagonian winterImage © Bruce Percy 2015

Small ice floes in Laguna Armaga, Torres del Paine, Chilean Patagonian winter
Image © Bruce Percy 2015

These days I still prefer to work with soft light, but I try to work with landscapes based on their tones and colours. Some places are monochromatic in nature and therefore I feel they work best in a neutral colour temperature (midday). For example, Torres del Paine national park can be a monochromatic subject. The mountains are granite grey with dark sediment rock layered upon them and Its beaches are made up of black volcanic rock. The mountains have a very stark look to them, so rather than seeking to shoot them in the warm glow of sunrise and sunset only, I find that the cooler colour temperature of midday light can often work better.

I've come to realise over the years, that beauty is everywhere and it can be rendered under different colour temperatures - not just the golden rays of sunrise and sunset.

Colour Constancy - how we fool ourselves

Colour Constancy - "the ability to perceive an object as having relatively 
the same colour under varying illumination conditions"


I've been saying for a while now, that being a good photographer requires a heightened sense of awareness - not just of patterns and themes within the landscape, but also of colour.

But colour is difficult to perceive accurately in the landscape, because our brains and visual system have evolved to allow us to perceive the same objects as having relatively the same colour under differing lighting conditions. This a is very useful evolutionary trick that allows us to identify objects under varying lighting conditions but it can be a problem for photographers when trying to visualise how the final image will turn out. This is because cameras don't have colour-constancy - they record the variances in colour that a subject goes through when the source of light changes.

As Wikipedia says:

"A green apple for instance looks green to us at midday, when the main illumination is white sunlight, and also at sunset, when the main illumination is red."

Color constancy: The colours of a hot air balloon are perceived as being the same in sun and shade while we are on location, but does the final photograph allow us to perceive them as the same? (Image source: Wikipedia)

Color constancy: The colours of a hot air balloon are perceived as being the same in sun and shade while we are on location, but does the final photograph allow us to perceive them as the same? (Image source: Wikipedia)

Another example would be to consider a white shirt under white sunlight. The shirt looks white to us, but if placed under a shaded green tree, the shirt has now taken on a green cast, except that we still perceive it as white and not green. 

This is a real problem for us as photographers, because for many of us, we don't see the green cast until we get home and review the images. Colour constancy is not so useful to us as photographers when we wish to see the actual colour that the object will be rendered on our film / digital sensor. Our visual system hijacks us into believing that the apple still looks green, even though it has taken on a warmer hue, or that the white shirt is still white, even though it has now taken on a green cast.

It is important to understand that objects do not have colour, but instead, that colour is an 'event'. We need three things for us to see colour: a light source, a subject, and of course ourselves to witness the light being reflected of the subject. As the light source changes, the light reflected back of the subject changes and as a result, its colour changes. But because of colour constancy, we perceive the colour of the subject to be relatively stable as the light source changes.

Cameras do not see the way we see. They do not have colour constancy - if the apple takes on a different colour at sunset, then the camera sees and records the change in colour, but we in turn do not. Similarly, if the white shirt takes on a green cast whilst placed under a tree, then the camera is able to see this and record it also, whereas we do not.

The only caveat to this is when we set the white-balance of the camera to 'auto'. When we do this, we tell the camera to 'tune-out' any colour casts and try to render what it is recording as a mid-day temperature. So in effect, 'Auto-white-balance' is the camera's own way of obtaining colour-constancy. I don't believe we should use AWB (auto white balance) in cameras because we would effectively be tuning out the warm hues that are present at sunrise, or the cold hues that are present at twilight. 

I see colour-constancy as a handicap though. For landscape photographers what we really need to see is how the colours change under varying light sources. Yet our visual system is doing everything in its power to 'tune-out' everything so we don't see these colour changes. You can consider colour-constancy as our own in-built 'auto-white-balance'. 

Colour constancy allows us to perceive squares A and B as different, when they are actually the same luminance. (source Wikipedia). Try it out - open this image in Photoshop and use the eyedropper tool to check the RGB values of square A and B. You …

Colour constancy allows us to perceive squares A and B as different, when they are actually the same luminance. (source Wikipedia). Try it out - open this image in Photoshop and use the eyedropper tool to check the RGB values of square A and B. You will find that they are both R:120, G:120, B:120.

Being aware of our own in-built 'white-balance' - our ability to tune out these colour changes is important. We need to be aware of the different colour temperatures that are present throughout the cycle of a day from twilight (cold, blue) to sunrise (magentas, warm) to midday (neutral) and how these will affect the subjects we photograph.

Over the years, I've learned to be more aware of how colour constancy is affecting my judgement.

About a year ago, I was standing on a beach with a group of workshop participants. There was a prominent red sky towards where the sun was rising, and I knew this would mean that if the light source is warm, the entire landscape would be bathed in the same warm tones. The first thing I notice about many photographers is that they want to shoot towards the sun because they perceive the red colour being present only in that direction. They don't perceive the rest of the landscape as being bathed in the same warm light, and this is because of colour-constancy. I asked my group to tell me what colour the clouds were during the sunrise. To my eye, they were magenta. It was interesting to note that half of the group said they were magenta while the remaining members said the clouds were grey. It was only when reviewing the work in our mid-day editing session that it was obvious the landscape was pink, and so too were the clouds, yet half of the group weren't aware of it at the time of capture.

Understanding our own visual limitations, of how we can be tricked into thinking that a subject's colour remains mainly constant under varying lighting conditions is a key awareness skill.

My first Digital Darkroom Workshop

I'm just home from leading my first ever "Fieldwork to Digital-Darkroom" workshop, which entails marrying what is done out in the field with the post-edit stage. My course is based on my e-book - 'The Digital Darkroom - Image Interpretation Techniques'

Still very much a work-in-progress e-book, but I feel I'm getting a better sense of what should be included now that I'm teaching digital-darkroom interpretation skills.

Still very much a work-in-progress e-book, but I feel I'm getting a better sense of what should be included now that I'm teaching digital-darkroom interpretation skills.

The course was run at Adrian Hollister's Open Studio environment in the north-west of Scotland. Adrian runs many workshops with such notables as Joe Cornish, David Ward, Eddie Euphramus and the wonderful Paul Wakefield. His studio has six iMac computers, all colour calibrated and it's on the door-step of some wonderful landscapes which are within a 30 minute drive. Perfect venue for running such a workshop.

I've been wanting to run a course like this for a very long time, because I feel that the editing stage is often considered as an almost secondary, isolated task, something that is unrelated to the capture stage. 

Adrian Hollister's Digital Darkroom Studio, Mellon Charles, Wester Ross, Scotland

Adrian Hollister's Digital Darkroom Studio, Mellon Charles, Wester Ross, Scotland

I firmly believe that the fieldwork and editing stages are interrelated. Our editing sessions teach us about things we didn't notice at the time of capture and they illustrate to us what we need to be more aware of in future - if we choose to make the connection! Similarly, once we know how far we can push and pull images in the digital-darkroom, we are in a more informed position whilst choosing certain subjects, contrasts and qualities of light. There is a symbiotic nature between the two, and so for me, the word 'post' as in 'post-process' discourages our thinking into believing both tasks are unrelated, when they are not.

In fact, I abhor the phrase 'post-process' because it makes the entire editing stage sound like a functional, emotionless act. Images become something you could just stick in a washing machine, turn a few dials and let it run on auto. Which isn't the case. Editing requires much awareness - of tonal relationships, of competing elements, of flow throughout the image.

And adjustments made in the digital-darkroom should be made whilst noticing how our emotional response is affected when we change tones and contrasts in the work. It is much to do about 'feel' as it is to do about technology.

So I made a point that this week's workshop would not be about teaching photoshop, or teaching Lightroom. Anyone can do that in their own time, and that kind of knowledge is easy to get. No, what I wanted to teach was how to interpret what you've captured - to see and take advantage of themes present within the composition, to notice tonal relationships between subjects within the frame, to see that each image has an underlying structure that almost spells out how it should be edited to bring these motifs further forward. 

The digital darkroom is a creative space, one where we can bring out the essence of the motifs we discover in the image. That's its primary function for me. I do not see this as a way for fixing bad images. A bad image is always a bad image. We have an expression here 'you can't polish a turd'. Instead, I see it as a way to bring out the beauty and essence that can, with a bit of interpretation, be found in a good image.

But interpretation is a skill, and like composition, has to be earned and improved over the lifespan of our involvement with photography. There is no manual for this, just an improved ability to read an image, to understand what is going on, and to know your toolkit (software) well enough to be able to bring forward your interpretation.

So I was curious to see how my group of participants would edit their work after five days of guidance and continuous feedback. I definitely saw improvements in most participants work. Certainly in the daily reviews I would notice that all of the participants had observations and awareness of what might be done to help remove distractions, or bring out themes within the work, but what I had not envisaged was that some of the group would be far too subtle with their edits and I think there are a few reasons for this.

Firstly, each one of us has our own aesthetic. We have our own tastes. Some photographers are more interested in the verbatim. What they see out in the landscape is what they want to capture, and so the edits will be done with a lot of sympathy for how they perceived their reality.

Secondly, some will under-edit because of a lack of objectivity. Ideally we need a few weeks between capture and edit. I always find that if trying to edit work straight away is hard because we're so often attached to an idea of what we wanted to convey and if the image is not successful in this regard, we may feel it is not a success. Leave it for a few weeks and you will come back to it with a fresh eye. If there are any motifs of themes within the image - you're more likely to work with those because you're more open to see other things where you were not at the point of capture.

Thirdly, I think under-editing happens through a lack of confidence. Too scared to adjust the image too much because the photographer feels they don't have enough skill to know what to do. But I also think it may be because they feel they may lose something in the process, and could be holding onto how the image looks now, and can't see beyond that to another destination.

It's this that interests me most and I must confess that I feel there is no clear answer. Editing is a skill that is derived from many years of self-improvement. If I look back at my own editing abilities, and consider images I shot 10 years ago, I can see that often I knew there was something missing in an image, but I couldn't put my finger on what it might be. I see tonal errors in them where at the time of edit, my abilities were so untuned I thought I saw beauty. Where I was perhaps overcome by the strong colours of my chosen film, I now see a clumsy edit.

Digital-darkroom skills take a lifetime of continuous self-improvement. We have to put the work in. But we also have to be smart about it. Simply cranking up contrasts or saturation across the board is a clumsy way to edit work, and it should be something that doesn't happen so much as it did when you began your editing career. But things only change if you take the time to consider and reflect on what might be the best way forward to edit your work, and self-awareness is something that has to be built upon over time.

I found my Digital-Darkroom workshop did help my participants. There were moments where I felt I had led my horses to water, only they were unable to drink, because if they can't see it themselves, then I can't force them to. Improving editing skills can't be rushed, but certainly a week in the field and behind a computer with a photographer you like the work of, may help bring about an improved sense of awareness, and that's what I believe happened this week.


Josef Albers - Interaction of Color

I've been saying for a while now, that digital-darkroom skills take a lifetime to master. It is a continuous journey of self improvement. Simply buying a copy of Lightroom or Photoshop and learning the applications may give us the tools, but it does not make us great craftsmen. We need to delve deeper than simply adding contrast or saturation to our images to truly understand how to get the best out of our editing and to move our photographic art forward.

Josef Albers fascinating 'Interaction of Colour'. It's quite an old publication now, but it's great for getting a better grasp of colour theory.

Josef Albers fascinating 'Interaction of Colour'. It's quite an old publication now, but it's great for getting a better grasp of colour theory.

Lately, I've been taking more of an interest in tonal relationships and more specifically, the theories behind how we interpret colour. It's something that has grown out of my own awareness of how my digital-darkroom interpretation skills are developing.

Simply put, I believe we all have varying levels of visual awareness. Some of us may be more attuned to colour casts than others for example. While others may have more of an intuitive understanding of tonal relationships. 

Ultimately, if we're not aware of tonal and colour relationships within the images we choose to edit, then we will never be able to edit them particularly well. I think this is perhaps a case of why we see so many badly edited (read that as over-processed) images on the web. Many are too attached to what they think is present in the image, and there's a lack of objectivity about what really is there. 

So for the past few weeks I've been reading some really interesting books on the visual system. In Bruce Frazer's 'Real World Colour Management' book for instance, I've learned that our eye does not respond to quantity of light in a linear fashion.

An overly-simplified illustration. It demonstrates that the human eye is not able to perceive differences in real-world tonal values. Our eye tends to compress brighter tones, which is why we need to use grads on digital cameras, because their respo…

An overly-simplified illustration. It demonstrates that the human eye is not able to perceive differences in real-world tonal values. Our eye tends to compress brighter tones, which is why we need to use grads on digital cameras, because their response is linear, while our response is non-linear.

We tend to compress the brighter tones and perceive them as the same luminosity as darker ones. A classic case would be that we can see textural detail in ground and also in sky, while our camera cannot. Cameras have a linear response to the brightness values of the real world, while we have a non-linear response.

Similarly, when we put two similar (but not identical) tones together, we can discern the difference between them:

Two different tones. Easy to notice the tonal differences when they are side by side.

Two different tones. Easy to notice the tonal differences when they are side by side.

But when we place them far apart - we cannot so easily notice the tonal differences:

Two different tones, far apart. Their tonal difference to each other is less obvious.

Two different tones, far apart. Their tonal difference to each other is less obvious.

Our eye is easily deceived, and I'm sure that having some knowledge of why this is the case, can only help me in my pursuit to become more aware of how I interpret what I see, whether it is in the real world, or on a computer monitor.

Josef Albers fascinating book 'Interaction of Colour' was written back in the 1950's. I like it very much because it:

"is a record of an experimental way of studying colour and of teaching colour".

His introduction to the book sums up for me what I find most intriguing about how we see -

"In visual perception a colour is almost never seen as it really is - as it physically is. This fact makes colour the most relative medium in art".

Indeed. How a viewer of your work may interpret what your image says may be totally subjective, but there are certain key physical as well as psychological reasons for why others are relating to your work the way they do. But most importantly, if we don't 'see it' ourselves, then we are losing out during the creative digital darkroom stage of our editing.

"The aim of such a study is to develop - through experience - by trial and error - an eye for colour. this means, specifically, seeing colour actions as well as feeling colour relatedness"

And this is the heart of the matter for me. I know when I edit work, that sometimes I need to leave it for a few days and return later - to see it with a fresh eye. Part of this is that I am too close to the work and need some distance from it, so I can be more objective about what I've done.

But I also know that I don't see colour or tonal relationships so easily. I need to work at them. I am fully aware that I still have a long way to go (a life long journey in fact) to improve my eye. And surely this is the true quest of all photographers - to improve one's eye?

The memory of a colour

While I was in the Fjallabak region of the central highlands of Iceland this September, I encountered a number of vast black deserts. I've been in vast landscapes of nothingness before, such as the Salar de Uyuni salt flats of the Bolivian altiplano, and also the pampas of Patagonia.

These places are captivating endless nothingnesses that make the eye hunt and hunt for something to latch onto. At least, that's what I think happens when humans encounter something so vast and featureless.

One of the many black deserts of the central highlands of Iceland. Black can come in many shades and hues, as I discovered.

One of the many black deserts of the central highlands of Iceland. Black can come in many shades and hues, as I discovered.

This was nothing new for me. But what was new for me, was that I discovered that black isn't really just black. There are many different types of black desert to be found in Iceland. One of them - near the volcano Hekla, is so jet-black (it feels as if nothing can escape it's pull) that you realise every other black desert you've witnessed has to a large degree - some kind of colour to it.

There's a lot of psychology at play when it comes to interpreting colour.

Bruce Frazer's excellent book on colour management. Every photographer should read this.

Bruce Frazer's excellent book on colour management. Every photographer should read this.

For instance, I've been reading Bruce Frazer's fantastic book 'Real World Colour Management', and in it he describes the psychological factors involved in how we interpret colour. Colour is as he describes it 'an event'. It is light being reflected off a subject and viewed by an observer.

We have what he describes 'memory colour'. For instance, we know what skin tone looks like, and we all know the kind of blue a blue sky should be. We know 'from memory' how these colours should be. There are psychological expectations that certain colours should be certain colours. 

I think this applies to how I perceived the black deserts of Iceland. If i say a desert is black, we think of it as jet-black, even though it might be a deep, muddy brown-black, or a deep muddy purple-black.

I think most of the time, many of us simply go around looking at colour but not 'seeing it'. We use memory colours all the time with little thought to what the real colour of an object might be.

For example, last year during a workshop, my group and I were all working in very pink light during sunrise. Knowing that the entire landscape was bathed in a pink light, and that many of us don't notice the colour cast so obviously, I asked my group individually what colour the clouds were. Half of the group correctly said that the clouds were pink, while the other half incorrectly said that they were white. My feeling on this matter is that those who said the clouds were white - were attaching a memory of what they think clouds should look like. They were, in other words, not really noticing the colour of the object at all, but just attaching a common belief that clouds are white. This is a good example of memory colour.

But let's go one stage further. This might actually not be colour-memory at play though. It could simply be our internal auto-white-balance working. It's known that the human visual system is very good at adapting to different hues of white light. If we are in twilight, we may not see the blue colour temperature of the light on the landscape (but we sure would notice it's twilight if we take a photo on a digital camera and look at the histogram - there will predominantly be a lot of information in the blue channel, and very little in the red and green channels). Likewise, if we are sitting in tungsten light at home, our visual system adapts and tunes out the 3000k warm hue that we're being bathed in.

I think I was applying 'colour memory' to the black deserts of Iceland - I wasn't aware of the subtle differences in hues between one black desert and the other, because I had just attached a memory of what I know black should be (all blacks are black right?).

Being aware of the subtle differences in colour is hard work, because our visual system has evolved to adapt to whatever context we exist in. If we are sitting in pink sunrise light, we tune it out. If we do detect any pink at all,  it's in the more obvious region of the sky where the sun is. That's why most amateur photographers point their cameras towards the sun at sunrise (I tend to point 180º the other way, because I know the pink light is everywhere, and the tones are softer and much easier to record).

If I see clouds, I assume they are white because my visual system has its own auto-white balance. If I see skin tones, I use colour-memory to assume all skin tones to be the same, regardless of what kind of light the person is being bathed in. For example, if someone is standing underneath a green tree, there will be a degree of green-ness to their skin tone which I won't see, because of colour memory.

We lie to ourselves all the time, but our camera doesnt. It tell's it like it is, and I think this is the nub of todays post: being a good photographer is about being as colour-aware as we can be.

This is not an easy thing to do, because we are hijacked by our own evolution: our visual system tunes out colour casts all the time, and we also apply colour memory to familiar objects. We expect certain things to have certain colours, and as a result, we tend to ignore the subtle difference that the colour temperature of the light we're working in can have.

As I keep saying to myself as I work on my new images from Iceland "Not all black deserts are black".