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FORUMS Cameras, Lenses & Accessories Canon Lenses 
Thread started 06 Jan 2014 (Monday) 06:42
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Front Focusing, not a Sigma but a Canon

 
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Jan 06, 2014 15:44 |  #16

Ah, didn't see anything mentioned about ISO, just focusing issues. How do you process your images, like do you shoot raw, etc? What ISO starts to give you grief?

3200 should be fine, 6400 should be salvageable, and 12800 could be used in a pinch...

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Maverique
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Jan 06, 2014 15:45 |  #17

jrbdmb wrote in post #16581805 (external link)
Impossible. it is a well known fact on this board that only third-party lenses miss focus.

;)

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Jan 06, 2014 17:05 |  #18

TeamSpeed wrote in post #16582957 (external link)
Ah, didn't see anything mentioned about ISO, just focusing issues. How do you process your images, like do you shoot raw, etc? What ISO starts to give you grief?

3200 should be fine, 6400 should be salvageable, and 12800 could be used in a pinch...

I shoot raw and process in Lightroom. I don't shoot over 800 ISO.




  
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Jan 06, 2014 17:06 |  #19

LOL:lol:




  
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Jan 06, 2014 17:10 |  #20

exchange it. Lenses and cameras are built with a bit of tolerance, sometimes one has the bad luck to get a combo that has both edging towards the opposing outer limits. Or do micro adjust if you camera has that option. But if it were me and the lens is brand new, I'd exchange it first. Depending on where you bought it, you might be able to keep both for a bit (i.e. request an exchange and wait for it to be delivered, before sending the other back) If both behave the same I'd probably send the camera to Canon and/or try an other brand first.


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Jan 06, 2014 17:42 |  #21

The replacement should be here tomorrow.




  
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Jan 06, 2014 18:49 |  #22

brian4646 wrote in post #16583183 (external link)
I shoot raw and process in Lightroom. I don't shoot over 800 ISO.

Then you are missing out on at least 2 stops of usability, IMO. Going to a 5D3/6D, you will only go up to 3200.

First here is an ISO 1600 shot from the 7D, obviously cropped in and post processed.

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Here is an ISO 3200 shot directly from raw, no further post processing in CS or LR. It is quite simple to improve this image even more with some minor cleanup. If you would like to know how to get more out of your camera, please just let me know, and I will point you to some material.

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Jan 06, 2014 20:00 |  #23

I'm always open to learning new techniques to improve my skills.




  
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Jan 06, 2014 20:30 |  #24

Click my mini-reviews, the techniques described under the high ISO for the 7D would be applicable to the T2i.


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Jan 08, 2014 08:56 |  #25

I got the replacement lens and it's great. No focus issues.




  
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Front Focusing, not a Sigma but a Canon
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