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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 26 Oct 2009 (Monday) 20:35
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Rotating vs non-rotating front element, how can I tell?

 
MRagon
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Oct 26, 2009 20:35 |  #1

A beginner here trying to educate myself but I can't seem to figure this out. I understand about the circular polarizer being easier to use on a lens with a non-rotating front element. As I dream and drool over lenses I can't seem to figure out how to determine if the front element rotates or not. What magic lingo am I looking for that will give me that information? For example does the EF 70-300mm f/4-5.6 IS USM rotate or not? I know my 18-55 kit lens does but I can put it on the camera and see it turn. When I'm reading info about other lenses how can I tell? Sorry to ask such a beginner question but I'm googled until I'm worn out and I still don't know the answer. Thanks for your help, I'm loving this forum!

Mimi


Canon 7D | Canon G12 | 10-22mm f3.5-4.5 |17-55mm f2.8 IS | 24-105mm f4L IS USM | 70-200 f4L IS | Ʃ 30 f1.4 | 50mm f1.4 | 85mm f1.8 | 100mm f/2.8L IS Macro | 430EX II | LumoPro LP 160

  
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phreeky
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Oct 26, 2009 20:44 |  #2

Firstly, yes the 70-300 IS front element will rotate during AF.

Secondly, it's typically not in the specs. Googling for reviews that tell you this sort of stuff is best.




  
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msowsun
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Oct 26, 2009 21:34 |  #3

This website has specs on all Canon lenses. It always includes info on whether or not the front element rotates:

http://photonotes.org/​lookup/ (external link)


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MRagon
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Oct 26, 2009 21:44 |  #4

Thank you both so much for your quick replies. And what a great website that is with so much information in one place! So much to learn and a lot of knowledge on this forum :-) Thank you again!!


Canon 7D | Canon G12 | 10-22mm f3.5-4.5 |17-55mm f2.8 IS | 24-105mm f4L IS USM | 70-200 f4L IS | Ʃ 30 f1.4 | 50mm f1.4 | 85mm f1.8 | 100mm f/2.8L IS Macro | 430EX II | LumoPro LP 160

  
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gasrocks
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Oct 26, 2009 22:20 |  #5

Yes, indeed, nice site. Thanks.


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Dpsteak
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Oct 26, 2009 23:44 as a reply to  @ gasrocks's post |  #6

Check the digital picture.com for some excellent reviews on canon lenses. It usually gives a lot of info and pics of the lenses too.


Gear:50D; 17-40L; 400 5.6L flickr (external link)

  
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Linda ­ Browne
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Oct 26, 2009 23:55 |  #7

msowsun wrote in post #8900895 (external link)
This website has specs on all Canon lenses. It always includes info on whether or not the front element rotates:

http://photonotes.org/​lookup/ (external link)

Thanks for that! :)




  
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duane0524
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Oct 27, 2009 08:43 |  #8

msowsun wrote in post #8900895 (external link)
This website has specs on all Canon lenses. It always includes info on whether or not the front element rotates:

http://photonotes.org/​lookup/ (external link)

Great site, thanks for posting.


Canon 50D | Canon 17-55 | Sigma 30 1.4 | Canon 70-200 2.8 IS II| Canon 85 1.8 | 430EXII| 580EX ll | ST-E2 | Canon TC 1.4x II | Benro Travel Angel C1682TB0

  
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MRagon
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Oct 27, 2009 10:42 |  #9

thedigitalpicture.com is a good resource too! Thanks again for the info and for not making me feel like I asked a dumb question...lol.


Canon 7D | Canon G12 | 10-22mm f3.5-4.5 |17-55mm f2.8 IS | 24-105mm f4L IS USM | 70-200 f4L IS | Ʃ 30 f1.4 | 50mm f1.4 | 85mm f1.8 | 100mm f/2.8L IS Macro | 430EX II | LumoPro LP 160

  
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Rotating vs non-rotating front element, how can I tell?
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