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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 09 Feb 2013 (Saturday) 22:13
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Misfocus?

 
John ­ from ­ PA
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Feb 10, 2013 19:30 |  #16

I think the 70-200 has a minimum fofus of 4 feet and that mayvary somebased on the focal length you've dialed in. Double check that you aren't shooting at MFD.




  
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trx125
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Feb 10, 2013 22:55 |  #17

Here it is.
http://www.filedropper​.com/mg9265 (external link)


7DMK2 I EF 24-105 F4L I CANON 70-200 2.8L IS USM II

  
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Yogi ­ Bear
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Feb 11, 2013 09:41 |  #18

Yep. Still back-focused. What was your distance to the subject?


Canon EOS 7D | EF-S 17-55mm f/2.8 IS USM | EF-S 55-250mm f/4.0-5.6 IS |
EF 100-400mm f/4.5-5.6L IS USM | 250D | EF-S 10-22 mm f/3.5-4.5 USM | 580 EX II |

  
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hdgiles
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Feb 11, 2013 10:11 |  #19

I ran your numbers through a DOF calculator and guessed 4 feet distance from the lense to the PC board and it came up with a DOF of 0.03 feet.

Maybe you should use a much shorter lens at f8 and try it again.




  
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trx125
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Feb 11, 2013 12:39 |  #20

I have used my 50 1.8 @ f/3.2 , 28-135mm @ f/8 , 11, 5.6 at a variety of distances. Does same thing. I purchased a 50d last night, I want to see what how it does.


7DMK2 I EF 24-105 F4L I CANON 70-200 2.8L IS USM II

  
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Misfocus?
FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
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