Extender EF 1.4X blurry pictures with EOS 90D and EF 100-400mm lens
I have a 90D and am using the EF100-400 f/4.5-5.6L IS IIUSM lens. I added the 1.4x extender to get greater distance. My concern is that I am not getting any pictures in sharp focus. Has anyone else experienced this? Whats the "fix" ??