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Thread started 29 Sep 2012 (Saturday) 15:42
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A case for xD bodies - micro adjust

 
NotBlake
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Sep 30, 2012 07:50 |  #16

joeseph wrote in post #15059946 (external link)
it's the target that needs to be perpendicular to the sensor for sensible test results, the angled rular is just guide to show how much front/rear the focus adjustment actually is...

Prior to executing readings I mounded my camera to the tripod and measured distance to the ground from both the target and the center of the lens ensuring Y alignment. I then used a t square at both the target and camera in the X and Z direction to assure that they were as aligned as possible.

If it's off, it's by less than a couple milimeteres which is much less error than is being shown in the examples.




  
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NotBlake
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Sep 30, 2012 07:51 |  #17

boerewors wrote in post #15060061 (external link)
sure but i would double check that with a manual focus

I double checked with live view at 10x. It seems to be as close as I can get it.




  
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Nick3434
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Sep 30, 2012 08:17 |  #18

Unregistered.Coward wrote in post #15060150 (external link)
I thought only Sigma lens had focus issues.

:lol::lol::lol:


Everything is relative.
Gear: 6D, Unholy Trinity:twisted: (24Lii, sigma 50A, 135L), and for the other ends of the spectrum, sigmaEX 14mm2.8 and sigmaEX 100-300F4.
Fuji X-e2, Rokinon 8 2.8 Fisheye II, Fuji 14 2.8, Fuji 18-55, Fuji 23 1.4
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Nick3434
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Sep 30, 2012 08:21 |  #19

NotBlake wrote in post #15060358 (external link)
Prior to executing readings I mounded my camera to the tripod and measured distance to the ground from both the target and the center of the lens ensuring Y alignment. I then used a t square at both the target and camera in the X and Z direction to assure that they were as aligned as possible.

If it's off, it's by less than a couple milimeteres which is much less error than is being shown in the examples.

I am going to either be getting a 5dii or a 6d in the near future, and it seems like your chart and procedure are really the way to go. I work with technical measurements and what you did makes legit sense. Other than that T squares can tend to be out of square a fair amount over say 3 ft, but your theory and effort are very on point. Thanks for sharing, I found this useful.


Everything is relative.
Gear: 6D, Unholy Trinity:twisted: (24Lii, sigma 50A, 135L), and for the other ends of the spectrum, sigmaEX 14mm2.8 and sigmaEX 100-300F4.
Fuji X-e2, Rokinon 8 2.8 Fisheye II, Fuji 14 2.8, Fuji 18-55, Fuji 23 1.4
FlikR (external link)

  
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A case for xD bodies - micro adjust
FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
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