I am an amateur but I am a fairly technical person.
Recently I got interested in Bird photography and find my T2i lagging. Sure I have a just 70-200 F4 L IS, which I am thinking of upgrading to 100-400 L.
I have noticed that because of such high pixel density getting a sharp shot of even slow moving birds in flight is extremely challenging. 7D has same sensor but a much much better AF, so I guess it suffers from same disease of "triple your usual shutter speeds to get crisp action freezing shots".
Above 800 ISO, you get extremely noisy images even after I dial in +1.5-2.0EV on my T2i. This is very disappointing as most of the fine shots I can see happen during early hours or near twilight.
Canon 5D Mark III is exciting but then I will loose the reach of 1.6x crop factor, which is not what I want.
IMHO, 18MP is just too much for a crop sensor.
My wishlist for a 7d MkII will be:-
1. 14-15 MP
2. Improved autofocus
3. 8fps being retained.
4. Configurable DOF button like 5d Mk III.
5. Usable ISO till 6400.
I know usable ISO on a crop sensor is severely hampered. So my guess is perhaps Canon will make next 7D successor a 1.3x crop to give the much needed ISO boost.
Wishful thinking ...eh?