Quick Colour Space Question - DPChallenge Forums

04/17/2005 06:54:22 AM · #1

I may be stupid but what benefits / drawbacks are there for shooting in either sRGB or Adobe RGB

The manual states that Adobe RGB is mainly used for commercial and other industrial uses and is not recommended if you dont know about image processing.

Since I do know my way around Photoshop and post process all my shots should I just stick with the Adobe RGB colour space?

Thanks in advance for any replies

Steve

Olympus 9-18mm f/4.0-5.6 M.Zuiko Digital ED

04/17/2005 07:49:27 AM · #2

no one?

jonr

Olympus OM-D E-M5

04/17/2005 07:54:07 AM · #3

I used Adobe RGB for a long time, the colours looked better on screen straight out of camera, but then I could get the same results by just increasing contrast and saturation in post-processing.
And I didn't figure out how to get the most out of my printer by converting the images to the printers profile.
So I put Adobe RGB on ice, until I understand colour management better.

ralph

Nikon Z9

04/17/2005 07:58:48 AM · #4

the way i understand it -
sRGB was invented for the 'web' and is mainly usefull as a display color space (CRT/LCD)
if you want to print you would be better off living in AdobeRGB as it is a larger space to start with and can handle conversions to other spaces without banding (as much)

currently i only use AdobeRGB

04/17/2005 08:07:50 AM · #5

Adobe RGB has wider gamut than sRGB - e.g. sRGB is a subset of Adobe RGB.
With Adobe RGB you can get more vibrant colors than with sRGB. The difference is most obvious with saturated green and cyan.

The crucial thing if you work with Adobe RGB is to convert them to the sRGB profile before saving them for web use. In Photoshop this is done by going to Image -> Mode -> Convert to profile and select sRGB as the destination profile. I can't overstate how crucial this is when you intend your files to be displayed on the web. (Few if any web browsers support Adobe RGB.)

04/17/2005 11:38:52 AM · #6

Thanks for the replies folks

I presume that when you "save for web" in Photoshop that the required conversion to allow the picture to be seen as intended on many browsers is done?

Steve

dwoolridge

04/17/2005 12:08:22 PM · #7

Originally posted by Tallbloke:

I presume that when you "save for web" in Photoshop that the required conversion to allow the picture to be seen as intended on many browsers is done?

As I recall, the sRGB conversion is not done when using "save for web".

04/17/2005 12:52:07 PM · #8

Your right, just checked

I did the convert thingy to "Working RGB - sRGB IEC61966-2.1"

Is that correct?

If I had left my "people" submission as an Adobe RGB Profile what would that have meant, I see no difference on my monitor?

Steve

sofapez

Sigma 18-125mm f/3.5-5.6 DC for Canon

04/17/2005 12:52:59 PM · #9

The following is a link to an internet site that is pretty straight forward:

//www.drycreekphoto.com/Learn/color_spaces.htm

I hope I did that right, if not, copy paste to browser...
You can do search on internet and find all the info you want on srgb and it appropriate uses.

04/17/2005 01:02:09 PM · #10

Originally posted by Tallbloke:

1) Yes, that is correct.
2) Depends on the colors in the image. If you use strong colors they will look subdued when viewed in a web browser if you fail to first convert to the sRGB profile. And you need to look at the image in a web browser or within the save for web window to see notice the difference. Within Photoshop you shouldn't see much difference between the Adobe RGB and sRGB version.

04/17/2005 01:08:22 PM · #11

Great

Thanks a lot, learned something new today

I also spotted there's a profile for my Epson Stylus R200 printer which I presume will give be better prints than I have previously been getting

Thanks a lot to all who replied

Steve

Nikon AF Nikkor 50mm f/1.8D

04/17/2005 02:23:46 PM · #12

So what exactly is the difference between parameter 1 or 2 vs Adobe RGB? I've noticed that straight from the camera the Adobe RGB look more dull, should this be the case?

David.C

04/17/2005 05:33:56 PM · #13

Originally posted by Tallbloke:

Did you look at both of them in a web browser? PhotoShop is color managed -- that is, it is aware of the color spaces and how to display them. In PS the images should looks the same, but in a web browser (or any other application that is not color managed) it will display all colors in the applications default color space -- which is sRGB for browsers.

David

04/17/2005 05:36:41 PM · #14

Originally posted by kyebosh:

I've noticed that straight from the camera the Adobe RGB look more dull, should this be the case?

Yes, If you look at the file with a software that doesn't support color management the file would appear dull. Viewing the file with Photoshop or other profile-aware software the image would appear correctly.

04/17/2005 05:45:28 PM · #15

It looks duller on the camera LCD as well. Should that be the case?

Message edited by author 2005-04-17 17:45:40.

04/17/2005 07:35:38 PM · #16

bump for answers.

04/17/2005 10:33:51 PM · #17

Originally posted by kyebosh:

It looks duller on the camera LCD as well. Should that be the case?

If the camera software is not color-space aware then this would be normal. I doubt Canon bothers with color-profiles for the software they use to display images on the LCD-screen on the back.

04/17/2005 10:57:24 PM · #18

So is Adobe RGB color actually better printed than the other options in the 300D?