RF 70-200 F2.8 Still Front Focusing

Started 4 months ago | Discussions thread
highdesertmesa Regular Member • Posts: 461
Re: RF 70-200 F2.8 Still Front Focusing

gmanc wrote:

I've read through all the threads that started almost a year ago regarding the front focusing issue with the RF 70-200 F2.8 when used at F2.8, 200mm at MFD. The firmware update 1.0.6 was supposed to fix this problem but I haven't seen very much posted since the firmware was issued either positive or negative. I recently received a new RF 70-200 F2.8 and based on the testing I've done with it it seems the problem still exists. It's possible the firmware update may have improved the issue I don't know but based on what I'm seeing the problem is still there. When I focus manually the lens is as sharp as can be at all focal lengths. BTW, I've updated the lens firmware to 1.0.8 and my R5 has 1.2.0. Is anyone else still having this problem and is Canon aware and working on a fix?

Most report no issues at 200mm MFD with the latest firmware. You may want to exchange yours for another copy or send to Canon for repair.

Make sure when testing in AF mode that you are not handholding – it's too easy to lean forward slightly and move the sensor closer than MFD. So if handholding, move back a few inches from MFD and make sure and use servo mode. In single shot, you will almost always move out of perfect focus before the shot can be recorded.

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