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Originally Posted by Don Hoey
Stephen,
Having just been through your gallery I cannot imagine you being much troubled by this. I notice you have only gone below f8 on your closeups. Always a f8 or wider on aircraft shots.
Just wondering if you are honing your reactions on Hoverflys as per Christines ( Sapphires ) pic. http://www.worldphotographyforum.com...ppuser=57&sl=s 
Don |
For close-ups I went smaller than f8 for depth and with aeroplanes my technique makes shutter speed king. If light allows a smaller aperture then the ISO gets lowered. f8 is about the cut off point to lower ISO. I have never been worried about f11 diffraction limit but I did know of it. Now I know why!!
When I get back home I'll go a test with TC and effective aperture (currently in Glasgow!)