Maybe for the class of lens it is, it would be considered heavy. But it would still be nothing compared to something like a 300/2.8, and I have carried those around for days. Hand held too. No 'pods.
This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.
Explained in article.
Roger, after tearing down both OS versions of the 120-300, said it appeared that elements in these lenses could be interchanged. The optical design seems unchanged. When questioned about this, Sigma replied that the 120-300 "S" has 2 FLD Glass elements instead of one. FLD glass has performance equal to fluorite, which is excellent.
So 2 FLD elements instead of one so better IQ.