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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.