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this is the soft mess of a photo I was getting from the 800mm, The first few test shots were sharp, but I am blaming the two hours under hot summer sun for the lens going soft on me, is this true? did the camera focus indicator suffer from the heat? is my D810 damaged? my eye was telling me this was the best focus I could get as well.
I will retest this weekend.
Too bad as the 800mm perspective of a ship is so much more interesting than the 300mm.
r
Rafael. I agree with Buddy. Heat combined with the amplified distortion of shooting through hot air turbulence. The 800mm will show it much more than the 300mm end of the 50-300. I have had similar experience shooting down at the coast in the summer. Very good shots early morning then going south as the sun came overhead. Try with a white towel or put on some light colored lens wraps. I went with a light colored camo wrap from McNett. It relieves the heat some, but of course does nothing for the air distortion.
Guess that is why most other brands of super telephoto lenses are white??
