i'm thinking about picking up a cropper to attach to a long lens for an upcoming trip. i'm thinking of getting the 50d and i was wondering beside the extra 3mp is there any huge advantage to getting the 7d instead?
my concerns are pixel count, quality and IQ. the 50d will focus well enough and have a fast enough frame rate for me. i'm not looking to track a running animal at 10 fps. i basically am looking for reach for long lenses like the 500L and 100-400L.
and of course i want a back-up to my main body.
price for a used 7d will be twice the cost of a used 50d.