ag92
Posts: 1045
Joined: Wed Jul 26, 2006 5:23 pm

Canon 100-400L Is USM Aperture Question

Sun Aug 10, 2008 3:51 pm

About the aperture of the lens, is it limited to 4.5-5.6, or can I use it at values such as 11 or even more than that?
 
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vishaljo
Posts: 501
Joined: Thu Aug 17, 2006 9:54 pm

RE: Canon 100-400L Is USM Aperture Question

Sun Aug 10, 2008 4:11 pm

4.5-5.6 define the lowest f number available across its focal length, you can certainly go up to f 11,12,13,14.................................
 
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walter2222
Posts: 1237
Joined: Fri Sep 23, 2005 3:40 am

RE: Canon 100-400L Is USM Aperture Question

Sun Aug 10, 2008 4:15 pm



Quoting Ag92 (Thread starter):
4.5-5.6

f/4.5-5.6 is the maximum aperture of this lens (i.e. wide open), you can always stop it down further f/7.1, f/8.0..... up to f/32-40(i.e. minimum aperture).

Best regards,

Walter
Canon 347d mkII ;-) - EFS10-22mm f/3.5-4.5 USM - EFS18-55mm - EF28-105mm f3.5/4.5 - EF100-400mm f4.5-5.6l IS USM - ...
 
ag92
Posts: 1045
Joined: Wed Jul 26, 2006 5:23 pm

RE: Canon 100-400L Is USM Aperture Question

Mon Aug 11, 2008 4:05 am

Thanks for all your replies, so is there any reason why it mentions two apertures rather than one
 
withak
Posts: 219
Joined: Thu Apr 19, 2007 5:29 pm

RE: Canon 100-400L Is USM Aperture Question

Mon Aug 11, 2008 5:26 am



Quoting Ag92 (Reply 3):
Thanks for all your replies, so is there any reason why it mentions two apertures rather than one

The maximum aperture varies with focal length. At 100mm the maximum aperture will be f/4.5 and at 400mm the maximum aperture will be f/5.6.

Kris
 
flyingzacko
Posts: 572
Joined: Mon May 30, 2005 4:46 am

RE: Canon 100-400L Is USM Aperture Question

Mon Aug 11, 2008 1:54 pm

No offense mate,

but I'm thinking, you might want to get your hands on a book about basic photography first, before you spend about 1600 Euros on a lens.

Cheers,
Sebastian
Canon 40D + 24-70 f/2.8 L + 70-200 f/4 L + Speedlite 430EX
 
jgr
Crew
Posts: 112
Joined: Wed Jul 05, 2006 9:39 pm

RE: Canon 100-400L Is USM Aperture Question

Mon Aug 11, 2008 8:47 pm

A great lens the 100-400 L IS USM !

High quality even at 400 mm... even at f/5.6, 6.3

Javier
Airbus A380-881 for 1.000 passengers !

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