Here they are- the first side by side portrait tests I shot this afternoon. For the most part, there are some things each camera does a little different. It seems to me the 7D is more sensitive to green light and the 5Dii more to red. I tried to be as careful as possible and took the following pre-cautions:
No support for 7D RAW files yet (I know I can convert them but I dont feel like RAW is fair, so we shot on JPEG)
1. Same Lens was used
2. Same Exposure Settings were used
3. Same lighting conditions were used
4. Tried to get same pose, though we were not perfect- obviously.
5. Same picture styles were used.
6. Lighting Optimizer was the same in both camera in all images compared (either off or normal)
7. Same JPEG Quality was used in all images compared.
8. All images were taken on Manual.
9. Same color space was used- (I converted it to sRGB for comparison)
10. Saved on the absolute highest quality, so these images may take a while to load.
There are a few things I would have done better, but this should give you a good idea of what we are dealing with.
A few other things I noticed:
– Check out how the DOF changes, even though the aperture used is the same (I had to back up with the 7D to get similar compositions)
– Terra seems thinner in many of the 7D images. Again, I had to back up to make her appear the same size and the result is she appears a little thinner.
– I think the 7D is boosting the green pixels, in most cases you cannot see it. (and the 7D looks slightly brighter), in the green shade test. You can see it.
Green Shade test was very interesting to me. Bayer Sensors have 2 green sensels per red and blue. There was a big tree to my left and it was reflecting a slight green hue on Terra. The 7D seemed to be more sensitive to it, the 5DII wasnt effected at all by it. 
We re-took this image in a walkway that had white and grey walls. Seems the 5Dii favors reds a little more and the 7D is brighter. I am wondering if the processor has been tweaked to over boost the green pixels? Not happy with the green shade test, I may try this again tomorrow.
Overall I was very impressed with the 7D, especially how fast and accurate the focusing seemed. It was a very pleasant shooting experience.
More tests to do….I should have the ISO tests up tomorrow.
First of all Terra, could you be ANY more stunning!!! :)!! WOW, i don’t even know what to say, the 7D pictures look like they have already been edited. why does the 7D look more exposed than the 5D, with the same settings? Can’t wait to see the ISO comparison. Thanks Michael!!
Wow… Great tests! Thanks for the info and your time to do this for everyone!
I wonder how much the distance difference plays into the end results of certain aspects of this test. Clearly as mentioned it effects the DOF due to subject distance difference.
Thanks for doing that Michael. Nice subject yet again. Great results on the 7D! I too wonder why the exposure seems brighter and clearer on the 7D. Look forward to more test shots :o)
SO IMPRESSED with the Hard Sunlight! Odd the Green test.
The 7d images seem to be flattened, or is it that the 5dii images are slightly distorted (distorted is not the right word to use, just can’t think of another right now LOL) I know you had to be closer to the model with the 5dii, that must be what’s causing this?
Michael, I found this video in youtube that talks about color changes and there is an example of greens. It is located between 2:47 and 2:50…
http://www.youtube.com/watch?v=g4YtELgxGPg&NR=1
Take a look at the highlights in the hair in the even shade test for the 7D. The 5D looks flat.