No infinity focus on FA 24mm....

jabber · 07-24-2010, 07:22 PM

RRRRgh,

I just picked up a FA 24mm and it performs brilliantly up to approx 30 ft where it seems to refuse to focus past. I'm assuming it is because the lens is out of calibration as eventhough the focus window shows infinity and the lens is at the furthest focus positon (af and mf) only 20-30 ft is in focus.

Has anyone else run into this before?

wlachan · 07-24-2010, 07:50 PM

When a lens is unable to reach infinity, the actual cause could be:
1) the lens actually cannot reach infinity
2) the focus screen is not calibrated properly
3) the film plane is not calibrated properly
4) the AF sensor is not calibrated properly
5) any combination of 1-4

07-24-2010, 07:22 PM	#1
jabber Junior Member Join Date: Feb 2010 Location: Vancouver, BC Photos: Albums Posts: 51	No infinity focus on FA 24mm.... RRRRgh, I just picked up a FA 24mm and it performs brilliantly up to approx 30 ft where it seems to refuse to focus past. I'm assuming it is because the lens is out of calibration as eventhough the focus window shows infinity and the lens is at the furthest focus positon (af and mf) only 20-30 ft is in focus. Has anyone else run into this before?

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07-24-2010, 07:50 PM	#2
wlachan Veteran Member Join Date: Sep 2006 Location: Canada Photos: Albums Posts: 2,625	When a lens is unable to reach infinity, the actual cause could be: 1) the lens actually cannot reach infinity 2) the focus screen is not calibrated properly 3) the film plane is not calibrated properly 4) the AF sensor is not calibrated properly 5) any combination of 1-4