k-h.a.w Offline Upload & Sell: Off
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suteetat wrote:
I think you are right. I looked through a whole bunch more pictuers I took of a pigeon chick I found on my balcony taken pretty much at minimum focusing distance. Lighting was not the best but I took this on a tripod with 2s delay.
https://farm5.staticflickr.com/4820/39878211073_3d9e5f1af7_o.jpgtest by Suteetat S, on Flickr
Both were 100% crops on the chick where it is the sharpest. Majority of pictures were like the picture on the right.
But may be 1 in 10 pictures were like the picture on the left. Mind you, the camera was stationary on tripod and
focus point was the same. I just fired off a whole bunch of pictures in a row in AF-S single mode, small single point focus.
In comparison to Z7/70-200/2.8, focus was much more consistant and the sharpness was consistantly in the middle, better than the one of the right but not quite as good as one of the left. I would have thought that CDAF is slow but once focus is achieved, it should nail it pretty much every time.
Result was the same pretty much at all F stop that I tried between F4 and F8 (meaning that once in awhile, GFX would nail the focus).
Here is the whole picture of the one that I got the best focus on.
https://farm5.staticflickr.com/4812/31901968617_56e3d8211c_o.jpgGFX57335 by Suteetat S, on Flickr
Shutterspeed is rather low so I thought that may be it was motion artifact as well but at similar shutterspeed on Z7, there was a lot less variation on sharpness that I got as well and the chick was not exactly moving much either....Show more →
I don't find your results surprising at all.
However, they seem more related to the cameras used, and not the GF250 lens.
A small focus point can shift easily whenever you touch the camera, no?
Which shutter did you use?
K-H.
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