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Canon Ef 16-35 f4 Decentered or some other issue?

Started 8 months ago | Discussions thread
Marquee Regular Member • Posts: 407
Re: Canon Ef 16-35 f4 Decentered or some other issue?
1

KevinRA wrote:

Hayden N wrote:

CameraCarl wrote:

I don't have a depth of field calculator handy but I'm guessing that at F4 and focused to infinity you are not going to have something 4feet away in focus at a 29mm focal length . You ought to check it out.

Yes I agree and wasn't expecting the foreground to be in focus, main concern for me was the top right corner which looks like mush and is kilometers into the distance same for the upper left side which looks soft also.

Ok, do see what you mean in far corners. There could be some field curvature. Strongly advise f/8.

The bushes just past the foreground rocks are in focus which must be only 50m away so @F4 I would be surprised if the plane of focus is as far away as the dark pines to the right of the buildings. Did you focus and recompose? Is there a danger the camera refocused when you took the shot? At F4 there is no way the range of distance in the picture would be covered by the DoF. You need at least F9 possibly more. The corners do look mushy but until you try a narrower aperture we wont know if its a problem. the lens is a good all rounder but as you approach 35mm the corners will detreriorate a bit, especially on a 50Mpix body.

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