I thought I would run a test and print the same print at a local lab with different embedded profiles. I did this because of my initial question on AP relating to the RAW program, Raw Therapee and selecting the correct ICC profile.

I printed the same photo out in:

1. No Profile
2. Canon sRGB V1.31
3. sRGB IEC61966-2.1
4. Adobe RGB


On screen if I toggle between the different profiles on the same photo, Canon sRGB and sRGB IEC61966-2.1 look exactly the same. I assume the Canon profile is the same as sRGB IEC61966-2.1, they just name it something different - it's what I have been doing all my lab prints since I got my camera. whilst Adobe RGB looks more saturated on-screen.

The actual hard copy prints look identical. The local lab must obviously have their default profile and everything that is uploaded on their machines is overwritten with their profile.