« on: October 16, 2014, 09:35:41 AM »
Resolving power and noise.
Funny, that isn't what my actual crops illustrate.
About 50-70% depending on the full-frame camera. I have a 5D. The 7D2 will have about 90% more linear pixel density, and that most certainly will make a huge difference.
I've tested this myself, and even the difference between my T2i, 20D and 5D is a near-linear improvement with pixel density. Teleconverters wouldn't work if this weren't true, but they do work.
Linear pixel density is a figure quoted by people who don't do same generation comparisons. I just posted a genuine unaltered same generation comparison and there is no 50-70% difference in either. On the other hand you believe a comparison is valid if you just go on pixel numbers or pixel size regardless of sensor generation, nobody else does.
The differences you will see between a 5D and a 7D MkII are down to the nine years difference in sensor tech and technique, nothing else. Compare a cropped 6D and a 7D MkII and I am fairly sure we will see the same differences I illustrate, practically none.
Indeed that 6D and 7D MkII is the spiritual upgrade for the thousands of people that owned both the 5D MkII and 7D.
There are real benefits to getting a crop camera, especially one like the 7D MkII for focal length limited situations, but 'Resolving power and noise' are not two of them, resolving power can get a nod in ideal situations, noise never seems to. The true benefits are AF, frame rate, viewfinder framing, and cost.