Quickflash Loc: Loganville, Ga

Still very much confused, I went to Canon's website. I have a Canon camera and printer, so I thought it would be smart to see what they recommend. They suggest Adobe RGB, not sRGB for best results. That is what I have been using and plan to stick with. However, with other printers, one might want to check with the manufacturer to see if their product functions better with a different color space.

http://www.learn.usa.canon.com/resources/articles/2011/printer_tip_basic_color_management_article.shtml

That being said, I have also read that when posting on the web, convert to sRGB. You can do that easily, but converting sRGB to RGB is not so easy.

jerryc41 Loc: Catskill Mts of NY

I think he was shouting. From his avatar, it looks like he's in a desert. :D

Ernie Misner Loc: Lakewood, WA

Remember that for the web or email you'll have to save one version in the sRGB space for it to look right. Canon is assuming you are going to sell your prints professionally I think. Without a wide gamut professional monitor it's doubtful you could even see any difference as you are editing. Surely your printer supports both color spaces. These are the reasons 99% shoot in sRGB. Another thought is that if you don't take the time to save one version in sRGB, then down the road you are going to have a bunch of aRGB files in your folders and perhaps you will not become a professional print seller. It will slow you down trying to prepare those as you decide to post or email them..... and if you have a bunch that are already sRGB then you would have a mixture of both.

Quickflash Loc: Loganville, Ga

This is all true. However, while I do not ever expect to make a living selling prints, I do a substantial amount of printing for friends, family and personal use. More so than those I share online, so this works for me. When I do share online, I find it easy and quick enough to convert to sRGB, and afterward just delete the converted version.
This way I am very happy with my prints and I don't worry about duplicating photos for the web.

Ernie Misner Loc: Lakewood, WA

Good, sounds like you have all the bases covered.

CaptainC Loc: Colorado, south of Denver

One thing I do not believe I saw in all these responses: If you shoot raw, then what you have your camera set to for color space is of no consequence. The color space is chosen ONLY when you process the raw file. In ACR, it is that link at the bottom of the screen - click on it to set HOW you want to set the image. In LIghtroom it is set with the export.

And the person who stated you should only use AdobeRGB 1998 with Adobe products...not sure where THAT comes from. It is one of the common color SPACES that is all.

Most of you out there have monitors that will only display sRGB anyway. All iMacs for example are sRGB only - you cannot even SEE the AdobeRGB colors that are outside sRGB.

Ernie Misner Loc: Lakewood, WA

I have an older Dell 19" monitor and I could see a small difference when I converted an image to aRGB. What was really interesting is that converting it changed the histogram considerably. It was a saturated red type image though which is difficult not to blow out in sRGB. The histogram compressed and moved somewhat to the left. If I had the camera set for aRGB at the time of capture, I don't think it would have affected the in-camera histogram though?.... because we are seeing a jpg rendering of the histogram possibly.