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        Mitakon Speedmaster 85mm f/1.2 on Canon 5D2 Review

        - by Lens Reviewer

        Today, I will be testing this lens. I am using Canon 5D Mark II as this is a full frame DSLR. So, this will maximise out the quality of this lens. I will test distortion, sharpness, vignetting, lens flare and sunstar. All results are based on my copy of lens and does not represent all copies have same results.

        Lens Specification

        • 85mm
        • F/1.2-F/16
        • 1m minimum focusing distance
        • 0.11x Magnification
        • 77mm filter thread
        • 11 diaphragm blades
        • 29º angle of view
        • 9 elements in 6 groups
        • 921g
        • Manual aperture ring
        • Manual focus

         


        Now, I will show you how to lens look like.

         

         

        Lens focusing at infinity

        Lens focusing at minimum distance

        Front Glass Elements

         

         

        Rear Glass Elements

         

        Conclusion

        Good construction as dust can't enter through front or rear of lens.

         


        Distortion Test

         

         

         

        Conclusion

        Excellent distortion control

         


        Lens Sharpness from F/1.4-F/16

        Please click for original resolution

         

        F/1.4

         

         

        F/2

         

        F/2.8

          

        F/4

         

        F/5.6

         

        F/8

         

        F/11

         

        F/16

         

        Conclusion

        Sharpness: F/8 > F/11 > F/5.6 > F/16 > F/4 > F/2.8 > F/2 > F/1.4

         


        Vignetting From F/1.4-F/16
         
        F/1.4
         
        F/2
         
        F/2.8

         
        F/4
         
        F/5.6
         
        F/8
         
        F/11
         
        F/16
          
        Conclusion
         
        Strong vignetting at F/1.4-F/2
        Medium vignetting at F/2.8
        No vignetting from F/4 onwards
         

        Ghost and Flare Test

         

         

        Conclusion

        What do you think?

         


        Sunstars 


        Conclusion
         

        What do you think?

         


         

        Conclusion

        • Manual aperture ring

         

        Pros

        • Big aperture F/1.2
        • Full metal build quality
        • Nice manual focus
        • Dust is sealed from entering from front and back
        • Excellent distortion control
        • Soft at big aperture
        • No vignetting from F/4 onwards

         

        Cons

        • No autofocus
        • No weather sealed
        • No image stabiliser
        • Heavy
        • Strong vignetting at big aperture
        • Sharpest only at small aperture
        • Vignetting at big aperture

         


        More photos can be available at Flickr. My results are based on the lens I have used and does not mean all the lens have the same results due to quality control.