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Canon EF 17-40 f4L Lens

Discussion

3 replies
Posted by Danny Laureys on September 20, 2008 at 6:05 PM
Hi,
I just got a new canon lens, 17-40 f4 L, on the lens I have a distance and Infinity mark window ( canon calls it a Infinity compensation Mark), can I use this to find the Hyperfocal Distance, or do I also an f-stop ring to line up with the infinity mark? Thanks for your help :smile:
Posted by Mike Spivey on September 21, 2008 at 10:33 AM
http://www.dofmaster.com/dofjs.html

That is the easiest way I've found
Posted by Guy Tal on September 21, 2008 at 11:29 AM
Mike is right. The markings on this lens will not help you find a hyperfocal distance. The infinity compensation mark is meant for infrared photography.

Guy
Posted by Danny Laureys on September 21, 2008 at 12:06 PM
That's what I thought, thanks for the response