How about a layer that previews a colorspace?

[timothye37271831]

This might already exist and I just don't know about it, or maybe there's a better way of doing this, but I was just working and it occurred to me that it could be useful to be able to create a layer that previews the image in a different colorspace.

Like if I'm working in prophoto, create a layer that shows the image as it would look converted to srgb. Maybe even more involved, like how would it look as an srgb jpeg saved at x quality.

[rob day]

You can set your Proof Setup to sRGB with Preserve RGB Numbers unchecked, and get a preview of the conversion from ProPhoto RGB to sRGB by turning on Proof Colors.

[Conrad C]

What do you want to accomplish? Is it something that can't already be done with soft proofing (View > Proof Setup)?

If you just want to see what a document will look like in another color space, that can be done using View > Proof Setup or View > Proof Setup > Custom depending on what options you want. View > Proof Colors will then toggle that on and off, and because it's just a view setting, it does not alter the actual colors in the document.

If what you want is to store multiple simulations of other color spaces, then create them using View > Proof Setup > Custom, and they will be added to the View > Proof Setup submenu so you can switch among them at any time.

If you want to see what an image would look like as an sRGB JPEG at X quality, you can preview that in the:

• File > Export > Export As dialog box, with Convert to sRGB selected
• File > Export > Save for Web (Legacy) dialog box in the Optimized tab, with Convert to sRGB selected

If you want those simulations to be in the Layers panel, there's no way to do that in Photoshop, but you can in Affinity Photo, where they implement soft proofing as an Adjustment layer type. If you want that to be added to Photoshop, you can request it on the Photoshop feedback site, or vote it up there if you find that someone else has already requested it.

[D Fosse]

Depending on your monitor you won't actually see any difference by proofing to sRGB. If your monitor is a standard gamut one, what you see on screen is already clipped to sRGB. You need a wide gamut monitor to see it.

And even so, you will never see the full extent of ProPhoto, and the clipping you actually can see is something close to Adobe RGB > sRGB. Any clipping from ProPhoto to Adobe RGB is forever invisible. All you see is the result.

"like how would it look as an srgb jpeg saved at x quality"

That already exists, it's called Export (or Save For Web).