Clipped colours in ACR - change the colourspace?

[simonkit]

I'm just processing a couple of shots in ACR and noticed that colours are been clipped (yellow patches when using "black" + alt). If I change the colourspace from Argb to prophoto this "warning" disappears which makes sense as prophoto is wider.

The question is...is there any point in processing the shot in the wider prophoto only to have it clipped again when I convert to Srgb to send to my print company?

Would appreciate some guidance on this

thanks

simon

 

[Kev M]

What colourspace did you capture it in to start with?

 

[simonkit]

What colourspace did you capture it in to start with?

I shot in Raw, didn't think this had a colourspace until imported into ACR where I currently have it set to Argb?

I've done a bit more research * it seems the best bet is:

open in ACR, Prophoto, do all ACR work, open in Photoshop as Prophoto and on completion of editing use: convert/profile/Srgb & set rendering intent to "perceptual". Had a quick go & seems to do the trick

simon

 

[pxl8]

Alt + black in ACR shows you if you are losing detail in the shadows and what "colour" it's happening with. Larger colour spaces such as ProPhoto (which ACR uses internally) give you more saturation so have no impact on the extremes of exposure.

Whilst it might seem sensible to work in ProPhoto unless you're sticking with 16bit throughout you actually lose tones in order to gain more saturated colours.

As always use the smallest colour space you can that encompasses the colours in the image and the output device. Any larger and you're just wasted bandwidth for saturation the image isn't using and/or can't be displayed on output.

Read the thread linked in my sig to see some simple examples of how even sRGB is too large for "standard" prints from a lab.