Using Adobe RGB to move between programs seems to work well.

[JBW]

[Manfred M]

As long as you remember to convert to sRGB when you post to the internet, you can use any colour space you want. The wider the better. If you are working in 8-bit colour AdobeRBG is fine, but I prefer ProPhoto for 16-bit work.

That being said, it's a "one-way" street once you go to a smaller gamut workspace, you've lost the colour data of the wider workspace, and there is no going back.

[JBW]

As long as you remember to convert to sRGB when you post to the internet, you can use any colour space you want. The wider the better. If you are working in 8-bit colour AdobeRBG is fine, but I prefer ProPhoto for 16-bit work.

That being said, it's a "one-way" street once you go to a smaller gamut workspace, you've lost the colour data of the wider workspace, and there is no going back.

The problem here is that Gimp will only import at 8-bit.

[bnnrcn]

Yes,it's a pity Brian . When I started searching for PP softwares for myself in the past, first I intented to get Gimp but because I noticed in one of the tutorials that Gimp works with 8-bit, I decided not to get it . Even so, I can see from your images that Gimp can make wonders in talented hands like yours

I love the image above,very nice composition and colors .

The problem here is that Gimp will only import at 8-bit.

[JBW]

Yes,it's a pity Brian . When I started searching for PP softwares for myself in the past, first I intented to get Gimp but because I noticed in one of the tutorials that Gimp works with 8-bit, I decided not to get it . Even so, I can see from your images that Gimp can make wonders in talented hands like yours

I love the image above,very nice composition and colors .

I am working very intentionally at subtle.

[Manfred M]

In that case, Gimp has a major liability when it comes to working with a modern camera.

8-bit is fine when working with jpeg files, but you are throwing away most of the data that your camera collected when you do your edit that way if you are using raw data and 16-bit TIFF.

[george013]

And what if my screen can't show Adobe RGB?

George

[Jimr1961]

Gimp 2.9 is 16 bit. It's still in development stage without a proven stable version yet, but I downloaded it a year ago and it has never crashed. They have made some changes, so the current download may or may not be as stable. I haven't had an opportunity to use it since I installed it last week. You can get it at Partha's Place if you want to play with it.

[Manfred M]

And what if my screen can't show Adobe RGB?

George

Your operating system and drivers should take care of that.

Your screen will likely be set to 24-bit colour and will automatically render the image in a colour space that can be displayed. On one of my computers I can even select the rendering intent that is to be used for out of gamut colours when this happens. On the others I can only guess as to what is happening, but suspect that the perceptual intent is likely being applied.

Anyone using a wide gamut colour space like ProPhoto experiences this; one gets the additional colour data that is used during editing, but in my case, I see rendered whin the gamut of my screen (98% AdobeRGB).

[george013]

Your operating system and drivers should take care of that.

Your screen will likely be set to 24-bit colour and will automatically render the image in a colour space that can be displayed. On one of my computers I can even select the rendering intent that is to be used for out of gamut colours when this happens. On the others I can only guess as to what is happening, but suspect that the perceptual intent is likely being applied.

Anyone using a wide gamut colour space like ProPhoto experiences this; one gets the additional colour data that is used during editing, but in my case, I see rendered whin the gamut of my screen (98% AdobeRGB).

Lately I understood that colorspaces are based on the wavelenght of light. How can the hardware specs been changed of the monitor?
I do think bitdepth is no factor in a colorspace. It's just a division.

George

[Manfred M]

Lately I understood that colorspaces are based on the wavelenght of light. How can the hardware specs been changed of the monitor?
I do think bitdepth is no factor in a colorspace. It's just a division.

George

That is partially correct, but your screen still has to be capable of reproducing the colours in the colour space, especially the ones at the boundary of the colour space. Lower end screens simply cannot reproduce the more vibrant colours. This is certainly my experience in viewing the same image on my dual-screen setup (my main screen is 10-bits per channel AdobeRGB compliant and my secondary screen is 8-bits per channel sRGB compliant). The vivid colours (assuming I am using the AdobeRGB or ProPhoto colour spaces) are much more vivid on the wide gamut screen than they are on the standard sRGB screen. If I convert to sRGB, both screens show a similar, less vivid image. One of my graphic cards lets me select select the rendering intent for out of gamut colours (I assume the others likely default to perceptual).




Bit depth is important for two reasons, first of all there are encoding specs, for example look at the draft spec for AdobeRGB (section 3.1.6 Encoding Formats); only 8, 10, 12 and 16-bit integer values and 32-bit floating point are valid. http://www.color.org/adobergb.pdf

If you start using the 8-bit version of this colour space and doing some extreme edits, I would expect to see banding show up. If you start working in a the ProPhoto colour space in 8-bit, banding will show up in edits simply because the offset between two adjacent colours is quite large. If you don't do any edits, you are fine, but do anything heavy duty and banding shows up. Do the same exercise using 16-bit, and the image is quite tolerant of extreme edits.

http://blog.xritephoto.com/tag/prophoto-rgb/

[JBW]

Grumpy your post enticed me to calibrate my monitors. They look the same now and the shots look better. Thanks.

[george013]

Manfred,

We both agree that the importance bitdepth is editing related.

But confusing is how easy people are advised to use a specific colorspace. A colorspace is wavelenght related. Monitors are able to emit light within a range of wavelengths. That's the colorspace they can use.
By example your first post here

As long as you remember to convert to sRGB when you post to the internet, you can use any colour space you want.

should be read as "you can use any colorspace that can be used on your monitor".
And that despite the possibilities the software is giving you.



George