Here's a very handy noise comparison chart from The Digital Picture:
Thanks for that link PWP. It's interesting to see how little progress has been made in crop sensor performance since the T2i came out. It confirms my own comparison between my T2i and my 7D. Judging from my photos, they seem to have the same sensor. And judging from the information at the link you posted, the 70D is extremely similar. I'm very glad I have a 5D3.
the 7d DOES NOT have the same sensor as the t2i. The 70d's image quality is at least as good as the t2i, and outclasses both in iso performance.
As the reigning pixel peeper supreme, the t2i's sensor is superior. the 7d has severe iso issues. I guess my eyes are better
For the record, soooooo many people post their cleaned up, shrunken images to show how good thier shots are. For my uses, which is design down to the pixel, those kinds of examples are useless.
post 100% screen shots of those unprocessed raw files. Then u will see which is better.
For the record? Really?
How do you know for certain that the 7D and T2i don't have the same sensor? It is likely to have a sensor with very similar technology but the way the images are processed is different. The 7D has two Digic 4 processors vs one in the T2i. The AA filter is also different in the 7D. When comparing image quality between the two cameras it is very hard to tell them apart. What I found from my experience using both cameras is that the 7D has a stronger AA filter than the T2i which results in slightly softer images at similar settings (never bothered me as I shoot RAW and sharpen in post, it could be that Canon felt rebel owners were less likely to post process so gave the images a more sharpened look?) However I feel like the 7D had better colors, lower noise at high ISOs and maybe (though it could just be me) slightly more dynamic range.
It could also just be that when I moved up to the 7D I was using better glass and had improved my own technique thus resulting in better quality images?
I still have my T2i, might dig it out for comparison.