I purchased a used Sigma 70mm macro from Adorama about 2 months ago. I tried using it for about a week and found it to under preform significantly. Of course user error is always a concern when I am shooting macro so consideration was taken there. But it just seemed very diffuclt to get a good sharp photo.
Also, the focusing ring seemed to act a little different than any I have ecountered. In manual mode when turning the ring clockwise it would turn almost like it was getting help from AF, spining far too freely. Counter clockwise it seemed to work properly and well dampended. Needless to say I returned the lens but I order a new one.
I am getting the same results with this lens also. Tthe focus ring has this same behavior. I have never encountered a lens with focusing this way. I would think it should turn in either direction with the same effort. I also noticed it is front focusing a fair amount also in AF and when I try to adjust with K20D which helps but I am still not getting the results I think I should with this lens.
I purchased my Sigma 70-200 around the same time so a lot of focus went into this lens and by the time I got to check out the 70 macro I was a week past the return time. So now I am going to have to send it in to Sigma corp. ( Glad I have the Lester A Dine on its way )
I guess the big question is to you Sigma 70 macro owners is what is the character of the focus ring on yours? This new one does the same thing as far as turning far too freely clockwise. I know everyone raves about this lens and I have not heard anything like this before. I keep questioning my ablilities and want to blame user error, thats why I haven't brought it up before.
Before anyone asks for picture because its hard to tell anything without, here is a set I posted on flickr and also in Post your Photos. These came out ok though I think but at a struggle.
http://www.flickr.com/photos/33427578@N00/3850836962/
Any help please.
Last edited by OrenMc; 10-24-2009 at 02:56 PM.