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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 06 May 2009 (Wednesday) 09:59
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question for 70-210 f3.5-4.5 USM owners

 
tkbslc
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May 06, 2009 09:59 |  #1

Can anyone tell me what the max f-stop breakdown is on this lens? i.e. at what mm does it drop to f4, or f4.5, etc. Thanks.


Taylor
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agc1019
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May 06, 2009 14:09 |  #2

From looking at the labels on the zoom ring, it drops to f/4 a little before 100mm and drops to f/4.5 a little above 135mm.

If you want more precise numbers, I could take some shots and look at the EXIF.




  
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tkbslc
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Cream of the Crop
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May 06, 2009 14:20 |  #3

No need for more precision, that is good enough, thanks for checking.


Taylor
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996gt2
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May 06, 2009 14:51 |  #4

From my experience it's f/3.5 up to about 85-90mm and f/4 to just past 135mm. Beyond that it's f/4.5 wide open.

Hope that helps.


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question for 70-210 f3.5-4.5 USM owners
FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
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