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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 15 May 2009 (Friday) 18:41
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Back Focusing

 
AzMandella
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Location: Tucson Az
     
May 15, 2009 18:41 |  #1

I have seen quite a bit of talk lately about "Back Focusing". Is this something all cameras can do or a technique? I don't see anything about it for my 1Ds MII but see people talking about it using Rebels.


Canon 5D Mk III , 1Ds MkII , 20D , 16-35 f2.8L , 24-70 f2.8L , 70-200 f4L IS , 28-135 IS , 85 1.8 , 2-600 EX II , 2-580EXII , 1-580 EX.

  
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xarqi
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May 15, 2009 19:56 |  #2

Camera bodies and lenses can independently suffer from front or back focussing. It's not a technique, and nothing to be aspired to, it's an annoying fault.

P.S.

Oh - are you perhaps referring to the use of the "*" button on the back of a camera body to engage AF, rather than having it linked to the shutter release button?

On my 30D that is controlled by Cf.n-04, and I find it very useful.




  
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Steph_in_Oregon
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May 15, 2009 23:16 |  #3

Here is some info in case you're asking about this technique:
http://www.usa.canon.c​om …ArticleAct&arti​cleID=2286 (external link)

AzMandella wrote in post #7929475 (external link)
I have seen quite a bit of talk lately about "Back Focusing". Is this something all cameras can do or a technique? I don't see anything about it for my 1Ds MII but see people talking about it using Rebels.




  
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stockspics
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May 15, 2009 23:59 |  #4

i am still trying to figure it out myself. just mainly when and where to use it


j

  
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leppikallio
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May 16, 2009 05:04 as a reply to  @ stockspics's post |  #5

Using the magic button "*" for focusing is very good option after you get used to it. Gives you much more room with auto/manual AF combination if you have lenses which allow you to manually focus when AF is turned on. And somehow it is easier as well, gives you better control when you want to take the actual shot and when actually focusing. Referring mostly to action shots of course. I think that this technique is possible with all Canon bodies if you turn it on in custom functions.


---
1D mk2n, 1D mk1, 24-105/f4L, 100-400L, 50/f1.8

  
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Back Focusing
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