Rented a Canon 7D with 70-200 MM recently to do some testing. I own a Nikon myself (D200), and want to buy myself some new equipment to upgrade my aviation photography. I also rented a Nikon D300S with 70-200 MM the same day, to have an objective outcome under the same weather conditions. I will not post the pictures here, cause i choosed to do this test under foggy and rainy conditions, so this will not give an objective comparison with your 7D. I was seriously thinking about a change from Nikon to Canon, but i have to say, i´m not so sure anymore. My old D200 with CCD sensor and 80-400 MM (not even a high quality lens) gives better results then the new 7D. Now i have to be honest, i am not used to shoot with Nikon, so i might did something wrong, but i really took 1,5 hours to nake the right adjustments before i went shooting. To say shortly, i was really dissapointed, mainly caused by the nois in the images. The D300S produced much better results.
However, i will give Canon a second chance, i will rent the 7D again on short notice, in good weather conditions, if it's still the same outcome (dissapointing) i will either stick with Nikon, or swop to the 1D.
could anyone of the CANON 7D owners of you be as kind as to check my pictures if this is the normal standard quality for 7D pictures? I used to shoot with Canon 20D/40D in combination with the CANON 100-400 IS USM for several years now, with a lot of good and satisfying results; and now bought the 7D, to get better AF system among other new features. Unfortunately the results seem to come from a cheap pocket camera, the noise and image quality is as bad as I have not seen before. I sent the camera 2 weeks ago to Canon to check it, and got it back with the sign "repaird / CMOS justified". I went with it to the NATO Air Days, and still have the same results as before. Repaired?! Scam?! Most pictures look like I had used some cheap UV-filters at once... (Images with 40D look fine) I know heatwaves, I know conditions. But never ever has a panning with 1/1000 at F8 looked as crappy as this image:
Most of my 7D pictures look like that. Luckily the airshow season has ended, so CANON cannot ruin any further event for me in this year... The loss was already big enough though.
I would be very happy if maybe someone could upload an image with ISO250 and other settings like my picture? So I could compare it...