Toronto Photography Meetup Group

So which do you use? Personally, I've always used Adobe RGB 1998. I've read a few articles and they say that most people should be using sRGB and that there is not much advantage for using Adobe RGB over sRGB unless you are printing to a lab with a high end printer that can utilize the wider gamut. What do you guys think?

http://www.jseaman.com/articles/srgb.html

http://www.kenrockwell.com/tech/adobe-rgb.htm

http://www.cambridgeincolour.com/tutori ... GB1998.htm

Problem is most people who brag they use AdobeRGB because "it has more colours" are using cheap TN monitors that can't even show the entire sRGB colour space, never mind AdobeRGB.

Personally I use sRGB since my images are either online, projected, or printed on a basic inkjet.

There's no correct answer as neither cover the full gamut and many high end printers use a close variation to srgb rather then Adobe, also sRGB has more levels (shades) but less colours. If you really care you should use a 16 bit wide gamut colour profile rather then either adobe or srgb.

Most major errors in using profiles is out of gamut colours when changing profile for output such as screen or printers. If you don't understand what this means and how to detect and deal without of gamut colours then best to stick with srgb.

Personally I use wide gamut 16 bit for critical applications and srgb when not.

Some more discussion here:

http://www.tpmg.ca/forum/viewtopic.php? ... lour+space

Prophoto RGB up to print. Move to sRGB for web only ( I knew this before but was stubborn to do it)

[quote="Shuttereye"]Prophoto RGB up to print. Move to sRGB for web only ( I knew this before but was stubborn to do it)[/quote]

+1 Absolutely!

Me too, yet in-camera allows AdobeRGB and sRGB only, however I do a lot of processing in ProPhoto, where I might add some vibrancy. It's all converted to sRGB for web, unless I print with place allowing AdobeRGB, most use printer specific profiles anyway. My Raw files are intact for future change anyway

Ahh, got some reading to do now. Thanks for the link.

I'm taking a closer look at LAB now. A reverse of what RGB and CMYK is. A different beast and requires a good understanding of "color by the numbers" and I admit it gets frustrating. Hoping to pick up something useful for landscape images or it ends up in the bin

In LAB do a curve adjustment on A and B channels, same values, not too much - increases saturation without touching luminance, play with opacity and values. Convert back to RGB

started with aRGB because i heard the same things as you, but ended up switching to sRGB because it wasn't worth the hassle since web, online, etc. is sRGB.

I agree. I'm trying to understand the LAB color wheel where the values show opposites. In real scenario, mousing over any point in a given image would show the exact color value. This greatly improves color cast removal or color correction in seconds whereas RGB levels or curves will take a while building your black, white and grey points.

This requires a good understanding of the values in the color wheel otherwise you cannot interpret the numbers.

I'm shooting Raw and Lightroom works in ProPhoto. Everything after LR is in sRGB because files get viewed online, client's computers are likely sRGB, and print/album suppliers use sRGB.

I know there's an advantage to working in 16 bits and then converting to 8 bits at the tail end of processing. Does this work for colourspaces as well?
More specifically, for files to be used for web viewing (sRGB) is there any advantage to shooting and processing in aRGB (or converting to ProPhoto) and then convert to sRGB at the tail end of post-production?

IMHO Adobe has no real value in most uses as it is a 8 bit colour scheme which trades off dynamic range for some colours that aren't useful even for print or web and if they are used they can cause you out of gamut problems when converting to SRGB. Might as well use proPhoto. If you only use your images in SRGB for web or print then 16 bit colours profiles or adobe buys you problems with no gains but then again you only need a 4 meg pixel camera in that case.