Two pictures from a walk around a local park in Portland OR during a sunny January day. Both taken with the 600mm with a 2x extender. The first a Great Blue Heron in a tree over the path and the second a wood duck taking off- with an inadequate shutter speed causing unsharpness. The GBH is cropped a little the wood duck is adobe bridged for exposure and sharpness conversion from raw to jpeg, otherwise unchanged.
Edit my point here is that the the 840 (600+1.4) is not too long for a variety of fairly close range wild life use, the second picture would have been better if I had been able to remove the 1.4, and upped the shutter speed.
« Last Edit: January 28, 2014, 10:58:31 PM by applecider »
AE-1, T90,EOS Elan 7e, EOS-M, 7D, 5D3, 1dx, ef40 2.8, ef 85 1.2ii, ef100 is 2.8 macro, ef300 2.8ii, ef400 2.8ii, ef600 is ii usm, ef8-15 f4, ef16-35 ii, ef24-70 ii, ef 24-105, ef 70-200, 2xext ii, 2xext iii, 1.4x ext iii.