Does your 20/1.7 lens hunts when used on E-PL5/EM5 shooting video with AF set to AF-S?
I configure the E-PL5 movie mode to M, manually select aperture and shutter speed, and the AF mode to AF-S. However, when I shoot video (kids making a mess in the bath room) in low light using the Panasonic 20/1.7 lens, I seem to still see focusing "breathing," if that is the correct term for the lens to momentarily lose focus and refocuses. I double checked the AF-mode and confirmed that it is AF-S. Does anyone else notice this? On GH1, once focus is locked, I usually switch the focus mode to Ml using the dial on the left, and the focus will not move at all.
There are many threads covering how well the 20/1.7 focuses (although almost all cover still photography rather than video). Here's a current example: http://forums.dpreview.com/forums/thread/3398954
The usual term is "hunting" rather than "breathing" for the a lens struggling to AF.
The 20 often makes a bit of noise when focusing which leads some to conclude that it's not the best lens for video.
I double checked the AF-mode and confirmed that it is AF-S. Does anyone else notice this? On GH1, once focus is locked, I usually switch the focus mode to Ml using the dial on the left, and the focus will not move at all.
I just checked my E-M5 with the 20mm in S-AF mode. Moved around the house bringing objects in and out of focus. The lens never tried to refocus on its own, I had to push my AFL button to make it refocus.
My G5, 20mm and the kids don't mix for movie.
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