Is there a REALLY effective way to get more Zoom from a Pany 100-300mm?

Started Jun 23, 2013 | Questions thread
OP Setter Dog Veteran Member • Posts: 5,609
Re: Atmospheric conditions are typically the limiting factor, not the lens.

Paul De Bra wrote:

My 75-300 is very sharp at 300mm, yet many images taken at 300mm have been disappointing, clearly because of heat-induced turbulence. It not only hampers sharpness but also makes it harder for the AF to nail the focus.


That has always been my experience too,....I find the shots at 600mm or close to that show the "turbulence",....nearly always requiring increasing the contrast to make them acceptable.


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