On 22 May 2012 20:31, David J Brooks <[email protected]> wrote:
> So, after i set the Sigma 300 f4 APO's focus point a few weekends ago,
> i set out Saturday to shoot a few back yard birds and such.
>
> I did not have to review the photos in LR to tell which ones would be
> in relative good focus and which ones could not focus. Its a hit a
> miss but i'm now getting the odd shot like this:
> http://www.flickr.com/photos/djbrooks/7252554432/in/photostream
> Pretty much in focus, and then at times i get this:
> http://www.flickr.com/photos/djbrooks/7252554372/in/photostream
> Nothing will be in focus no matter how hard i try or use AF or MF.
>
> Not sure what going on, the lens worked very well with the istD and k-10d.
>
> Any thoughts??
>
>
> Dave
If it's not the SR going crazy Like P.J. suggested, then I'd say you
have a loose lens element in the lens. That picture reminds me of a
lens I partially took apart to clean the diaphragm blades, and then
couldn't remember the correct sequence for the rear 3 elements. I
tried various combinations, and the least crap one (though incorrect)
produced photos like that.
Cheers,
—M.
\/\/o/\/\ --> http://WorldOfMiserere.com
http://EnticingTheLight.com
A Quest for Photographic Enlightenment
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