new D800, cant get sharp images

Started Oct 9, 2012 | Discussions thread
inasir1971
Senior MemberPosts: 3,210
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Your image focus
In reply to franco, Oct 10, 2012

franco wrote:

http://dl.dropbox.com/u/2289659/_DSC0903.JPG

http://dl.dropbox.com/u/2289659/_DSC1038.JPG

http://dl.dropbox.com/u/2289659/_DSC1047.JPG

http://dl.dropbox.com/u/2289659/_DSC1058.JPG

http://dl.dropbox.com/u/2289659/_DSC1109.JPG

franco 7D 30D, Battery grip, EF 70-200L f4, EF 50 f1.8, Ef 24-105mm f4 LIS, canon i9950.

Had a look at your images and  a couple of things:

* the subject in all cases is situated towards the rear of depth of field. In the above image 1047 for example, the swan's feathers are perfectly visible and in focus with the focus extending towards the grass (near camera). It certainly looks like front focus (positive AF fine tuning values needed)

* not sure what you intend to be in focus but at a focal length of 120mm f5.6 your depth of field is going to be small

* the AF-S 24-120 f4 VR is not strong outside the central area on the longer settings. Here are some figures showing behavior of the lens:

http://www.photozone.de/images/8Reviews/lenses/nikkorafs24120f4vrff/mtf.png

So perhaps AF fine tuning your lens as it looks like front focus.

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