This is a very special lens.

Started May 5, 2013 | User reviews thread
Veteran MemberPosts: 4,005
Re: 90 mm Tamron Di Macro.
In reply to Leo James Mitchell, May 8, 2013

Too bad they don't make the Sigma 105/2.8 EX DG OS HSM in Pentax. From reviews it appears to have nearly the same high bokeh as the Pentax but is sharper at F2.8 and F4 than the Pentax. I'm still going to keep my Vivitar S1 105/2.5 (Pentax) and Tamron 90/2.8 SP Di Macro (Canon) for now. Both have worked well for me for years. Keep up the good work.

Kent Gittings

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