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I took my UV filters off my 500 f5.6 pf, 24-70 f4 and 300 f4 pf. I haven't had time to check the sharpness, but the focusing with the 500 f5.6 is better. I would like somebody to confirm that there is significant change with no uv filters. I had never thought that what I put on for protection would be a problem for sharpness and focusing.
I took my UV filters off my 500 f5.6 pf, 24-70 f4 and 300 f4 pf. I haven't had time to check the sharpness, but the focusing with the 500 f5.6 is better. I would like somebody to confirm that there is significant change with no uv filters. I had never thought that what I put on for protection would be a problem for sharpness and focusing.