Is my green the same as yours?

# Is My Green the Same as Yours?

A few years ago I had cataract surgery on one eye.

The difference afterwards was immediate.

The operated eye saw whites as bright and neutral, while the untreated eye suddenly looked noticeably yellow in comparison. Until then, I’d never realised how much my colour perception had gradually changed over time.

It was one of those strange moments where your brain suddenly notices something it had been compensating for without you realising.

As a photographer, I found it fascinating.

We tend to assume colour is fixed. That red is red, blue is blue and green is green. In reality, colour perception is far more subjective than most people realise.

Lighting changes colour.

Screens change colour.

Environment changes colour.

Even our own eyes change colour.

And often, we don’t notice it happening.

## Colour isn’t as consistent as we think

If you’ve ever looked at the same image on two different phones or monitors, you’ve probably already seen this in action.

One screen looks warm.

Another looks cold.

One appears vibrant.

Another looks flat.

Screen quality makes a difference too. A high-quality calibrated monitor will display colour very differently to an older budget screen with brightness turned up to maximum.

Then there’s screen size, reflections, fingerprints, cracked screens, blue light filters and automatic brightness adjustments all subtly affecting what we see.

The same photograph can look completely different depending on where and how it’s viewed.

Neither version may technically be “wrong”, but they’re certainly not identical.

That’s why colour management matters so much professionally, especially in photography, design, ecommerce and print.

When businesses are selling products online, showcasing interiors, reproducing artwork or maintaining brand consistency, accurate colour becomes important.

Customers make decisions based on appearance.

If a product looks too dull, too saturated or simply the wrong colour entirely, it can affect confidence before they’ve even read the description.

## Why photographers calibrate screens

A lot of photography work happens long after the camera has been put away.

Professional photographers spend time calibrating monitors and managing colour workflows to create consistency across devices and outputs.

Without calibration, editing becomes guesswork.

What looks correct on one screen may print completely differently or appear inconsistent on another device.

Calibration doesn’t magically make every screen in the world identical, because that’s impossible. But it creates a controlled starting point where colours are as accurate and consistent as possible.

That’s particularly important in product photography where colour accuracy genuinely matters.

## The human side of colour perception

What I found most interesting after my cataract surgery was realising how adaptable the brain is.

Before the operation, I had no idea one eye had gradually shifted warmer over time. My brain had simply accepted it as normal.

It makes you wonder how differently we all experience colour.

Is my green the same as yours?

Probably not exactly.

And that’s before you factor in lighting conditions, age, screen quality and all the little variables that influence what we see every day.

Photography sits somewhere in the middle of all of this, balancing technology, science and human perception.

Most people never think about colour management until something suddenly makes them notice it.

For me, it was seeing the world through two different eyes at the same time.