Originally posted by Trickortreat If we compare 2 sensors of same generation (that of Nikon D7200 and D750) that are of same resolution, difference is extremely small - less than half a stop at base ISO and a bit more than half a stop on ISO6400. If we push those photos trough post processing the difference is indistinguishable to human eye.
Yep, I said that legacy lenses are the main reason for FF to exist, but technically, there is really not that much advantage.
Shoot with both systems side by side and in certain circumstances the difference is there in terms of:
- af
- fps
- mettering
- viewfinder
- lenses (put a 11-24mm f4 lens on a full frame and on a crop and shoot at 11mm with both inside a small room)
- high ISO
- DOF
-resolution and bigger sensor (for the one who print large)
As good as a D500 is for tracking for example, there are lot of situations where a D5 will "kill" the D500.
Sure, for travel and for general shooting situations were you have good light and subjects less difficult, a crop camera will do the job just fine, as well as a micro 4/3 camera will do. A flagship APS-C is a very good alternative for the ones who don't have the budget and/or subject that require a full frame. Going full frame is expensive, especially if you need a 11-24mm lens for architecture or a 600mm f4 for birds or a 400mm f2.8 for sport.