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Archive 2012 · Focus Pyramid?
  
 
Snap96
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p.1 #1 · p.1 #1 · Focus Pyramid?


Has anyone used Focus Pyramid for focus calibration? At a little over $20, it seems like a more affordable option compared to Lensalign and Lenscal.

Thanks,
Paul



Aug 09, 2012 at 03:32 PM
omarlyn
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p.1 #2 · p.1 #2 · Focus Pyramid?


I've never used Focus Pyramid but I don't understand how a slanted target can be used to accurately calibrate auto focus. All the literature that I've read states that the AF target has to be perfectly perpendicular at the auto focus plane for accuracy, NOT at an angle as in the Focus Pyramid.

Omar



Aug 09, 2012 at 03:56 PM
EB-1
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p.1 #3 · p.1 #3 · Focus Pyramid?


It must be focused on the bottom face of the pyramid.

EBH



Aug 10, 2012 at 12:04 AM
dcains
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p.1 #4 · p.1 #4 · Focus Pyramid?


omarlyn wrote:
I've never used Focus Pyramid but I don't understand how a slanted target can be used to accurately calibrate auto focus. All the literature that I've read states that the AF target has to be perfectly perpendicular at the auto focus plane for accuracy, NOT at an angle as in the Focus Pyramid.

Omar


+1 You'll never get consistent results from an angled target.



Aug 22, 2012 at 02:38 AM





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