Login or Join Now

Upload your photos, chat, win prizes and much more

Username:
Password:
Remember Me

Can't Access your Account?

New to ePHOTOzine? Join ePHOTOzine for free!

Like 0

Canon 17-40L and infrared

Join Now

Join ePHOTOzine, the friendliest photography community.

Upload photos, chat with photographers, win prizes and much more for free!

Leave a Comment
    • «
    • 1
    • »
    bmh1
    bmh1 e2 Member 8571 forum postsbmh1 vcard United Kingdom1 Constructive Critique Points
    15 Oct 2012 - 12:00 PM

    Has anyone else tried the Canon 17-40L lens with an infrared body ?

    I bought the lens as it is well reviewed for not suffering from hot-spots (which ca be quite noticeable on my Sigma 17-70/OS)

    The problem I have is that the (auto)focus is terrible on my IR 10D body, all the other lenses I've tried are fairly good for focus with IR, some are slightly soft, but the 17-40 is miles out, and unusable until about f/8-f/11, I've tried using the AF and then adjusting the focus slightly afterwards by hand, but this is very hit-and-miss ..

    I've tried the lens on my (normal/unmodified) 5D, and there doesn't seem to be any AF problem (though I'm not sure that it is quite as sharp as I'd expect - I'm going to do some more focus testing).

    Sponsored Links
    Sponsored Links 
    15 Oct 2012 - 12:00 PM

    Join ePHOTOzine for free and remove these adverts.

    • «
    • 1
    • »

    Add a Comment

    You must be a member to leave a comment

    Username:
    Password:
    Remember me:
    Un-tick this box if you want to login each time you visit.