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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 10 Dec 2013 (Tuesday) 12:46
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Canon 24-70mm f/2.8

 
Shooting
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Dec 10, 2013 12:46 |  #1

Can anyone tell me what Canon charges to calibrate that lens? It has been shooting a little soft lately no matter what aperture I use. I do not want it calibrated just for my camera (50D) because it would have to be done again when I get another camera.

Or maybe there is someone that will calibrate it cheaper? It looks good on micro adjustment but I could be wrong because the + and - settings all look the same to me so I need it done by someone who knows best of what they are doing.

I wrote to Canon and they will not give me a ball park figure, they just keep saying they do not charge for examination and to send it in. But I don't want to waste the postage if I can't afford it.




  
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Dec 10, 2013 12:49 |  #2

probably in the range of $200


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Dec 10, 2013 13:02 |  #3

If you have the 50D, why not micro-focus adjust the lens?


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Dec 10, 2013 17:45 |  #4

gjl711 wrote in post #16516569 (external link)
If you have the 50D, why not micro-focus adjust the lens?

I did that but I think my eyes are not right or something because the +1 and -1 both look the same and shouldn't they look different?




  
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gjl711
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Dec 10, 2013 18:04 |  #5

Shooting wrote in post #16517215 (external link)
I did that but I think my eyes are not right or something because the +1 and -1 both look the same and shouldn't they look different?

+/-1 isn't going to change the focal plane by much. If you believe that the focus is a bit off, best to do some controlled tests and assess exactly where your focal plane is.

BTW, if you shoot using live view, zoom in 10x and manually focus assuring that you hit the focus perfectly, is the image to your liking or is it still poor?


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ronmayhew
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Dec 10, 2013 18:53 |  #6

I sent off a 35-350L to Canon several years ago for refirb, $300.


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Dec 11, 2013 21:24 |  #7

ronmayhew wrote in post #16517350 (external link)
I sent off a 35-350L to Canon several years ago for refirb, $300.

OUCH. Too much for my blood.




  
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Dec 11, 2013 21:25 |  #8

gjl711 wrote in post #16517256 (external link)
+/-1 isn't going to change the focal plane by much. If you believe that the focus is a bit off, best to do some controlled tests and assess exactly where your focal plane is.

BTW, if you shoot using live view, zoom in 10x and manually focus assuring that you hit the focus perfectly, is the image to your liking or is it still poor?

I'll try that and let you know.




  
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