17-40 F4 focus beyond infinity mark

[jimtong]

Hi owner of 17-40L F4. Does your lens distance scale focus beyond infinity mark when you focus on far subject? Mine does, it even goes beyond the infra red index marking.

Thanks.

 

[mpenza]

the lens scale is calibrated at a certain temperature. at different temperatures, there would be slight displacement....

 

[jimtong]

the lens scale is calibrated at a certain temperature. at different temperatures, there would be slight displacement....

but mine is not a slight displacement.. it is always going beyond the infinity mark in normal room temp.

 

[jimtong]

Called Canon and was told that it is not possible for the distance scale to go beyond the infinity mark. Looks like I got to bring the lens down for a checkup.

 

[sequitur]

i guess if it's affecting the focus of your photos then you should send it in for a checkup.

after all canon is pretty effective you should get back your stuff in 1-2 days.