Why the colors "regular" (from 0 to 1) look different in 32-bit mode?

I know that the 32-bit mode offers the possibility to work with colors beyond the limit of 0 to 1.

What I don't understand, is why "normal" colors appear brighter in 32-bit mode.

A slope of 0 to 1 looks quite different in 16-bit mode it does in 32-bit.

grad.png

I have messed around with the preview settings but am unable to match the appearance of the 16-bit mode.

Thank you.

Because you are working with factors different gamma.

Most of the integer (8 and 16 bit) formats use gamma 2.2 (medium grey is close to 128).  This is close to the perception human and made the best use of the available bits.

(32-bit) formats use gamma 1.0 floating-point (medium gray is near 0.18).  This means that the image is near work how light and makes it more accurate for some effects and calculations.

Tags: Photoshop

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