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Panasonic DFD

Started Apr 15, 2017 | Questions thread
whumber
whumber Veteran Member • Posts: 4,371
Re: Panasonic DFD

Kawika Nui wrote:

TwoMetreBill wrote:

DFD is a gimmick that delivers very poor results.

" I’m thoroughly impressed by what Panasonic has achieved with the Depth From Defocus (DFD) for continuous AF." (https://blog.mingthein.com/2018/01/22/review-the-2018-panasonic-lumix-g9/)

For stills you will be lucky if 75-80% of your shots will be in focus.

My own average is more like 95%+, normally shooting burst or 4K video (G9). Maybe you got a bad copy?

It really depends on what kind of movement you shoot. Things that move at a relatively constant speed are handled pretty well by DFD; but throw in some subject acceleration and DFD falls apart, even with Panasonic lenses.

Switch from Olympus to Panasonic for AF and you will regret it.

Only if you stick with Olympic lenses. "Using Olympus lenses, you will not have the benefit of DFD for the S-AF and C-AF capability of the G9." (Ming Thien review cited above.)

I'm pretty skeptical about how much the lens specific DFD profile matters. I find almost zero difference in AF performance between Olympus and Panasonic lenses on my G9. Based on my reading of the available literature, Panasonic should be able to create an effective approximate PSF profile just by knowing the focal length and aperture ratio of the lens.

 whumber's gear list:whumber's gear list
Fujifilm X-T1 Olympus OM-D E-M1X Olympus E-M1 III OM-1 Olympus M.Zuiko Digital ED 60mm F2.8 Macro +10 more
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