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    Canon EF 50mm f/1.4 - At what aperture is it sharpest?

    As the title says; at what aperture would you say the Canon EF 50mm f/1.4 USM ​lens is sharpest?
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    Probably around 2.8 - 5.6
    Megan

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    Stian Ulriksen | www.stianulriksen.com | 500px.com | flickr

    Camera: Canon EOS 5D Mark II
    Lenses: Canon EF 50mm f/1.4 USM + Canon EF 24-105mm f/4 L IS USM

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    Quote Originally Posted by Ulriksen View Post
    As the title says; at what aperture would you say the Canon EF 50mm f/1.4 USM ​lens is sharpest?
    According to this test,Canon EF 50mm f/1.4 USM - Review / Test Report - Analysis its best aperture is f/5.6. f/4 is good too, and close. F/8 is also good.

    A full-frame camera test here Canon EF 50mm f/1.4 USM - Full Format Review / Lab Test Report - Analysis shows the same results....f/5.6 best, with f/4 and f/8 also very close, and very good.
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    It's a good bet that F8 is going to be near the sweet spot of most lenses.
    Many people will also say that the sweet spot starts at about 1 or two stops down from wide open.

    So, F4 to F5.6 would be my guess for this lens...and it sounds like the tests will prove that.

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    Mine is very sharp from f2.8 to f11 but I don't hesitate to use it wide open it will produce a dreamy feel and is still consideribly sharp but will introduce some CA.

 

 

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