Falon Posted October 30, 2017 Share Posted October 30, 2017 Hi Brian, My 50mm lens has been terribly bad with focus. Its a canon EF 1.2. Is there some tests I can do at home to see what the problem is? Thanks Link to comment Share on other sites More sharing options...
Brian Posted November 1, 2017 Share Posted November 1, 2017 I personally haven't run those home tests, but i will say this... 97% of the time when shooting at f/1.2, you will blow the shot. Especially if you are close to your subject. The other 3% of the time that you shoot at 1.2 and nail it, a Chorus of Angels will sing. What most people don't realize is you buy a f/1.2 lens to be sharp about one stop down from the widest aperture. So in this case that would be f/1.8. For f/1.4 lenses, that's f/2.0. The reason has to to more with a Depth of Field problem than a focus problem. So could you post some examples of what you are experiencing? 1 Link to comment Share on other sites More sharing options...
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