Summary: I use this lens with an APS-C sensor camera which converts this lens to an effective focal length of 150mm. This allows for a comfortable distance between the subject and lens at close range at the expense of a very narrow depth of focus. The lens is sharp; however, there is noticeable diffraction distortion (loss of sharpness) at f16 and beyond. This lens is best suited for full frame cameras for which it was designed.
Perfect for the NEX-7, one of my "short list" lenses
Christopher Knight "claud9999", Amazon
25 June 2012
Summary: This lens taught me that quality optics matters...In reviewing a landscape shot on my computer, I said to myself, "what's that spot?" Zooming in, it was a tack-sharp image of a bird in flight. The detail that comes out of my NEX-7 with this lens in front shows the true capabilities. Note that I don't usually use this lens with the SLT adapter, auto-focus is quite functional at longer distances but even with the focus limiter, I found it was not the fastest at auto-focus,...
Summary: Very sharp lens excellent for portraits, macro, my first specifically digital lens for my Sony Alpha 850 (have vintage minolta lenses). Only complaint is focus wanders significantly at times unpredictably so. Can use focus limiter or manual focus as work around. Not sure why this occurs but I have read it on Sony website. Given the great price though this is an obstacle well worth dealing with.
Summary: While the 50mm macro is cheaper and lighter (and sharper), the 100mm allows you to have a greater working distance between the lens and the subject, which makes lighting easier. For full 1:1 magnification, the working distance is over 6", compared to just under 2" for the 50mm lens. It is much less awkward to use, and not as invasive into the space of your subjects, which might be inclined to fly or crawl away.
Summary: This is my first macro lens and I love it the results are above what I imagined and I am enjoying the results, Its functions are easy and user friendly, I can only get better with this lens on my camera.
Summary: The Sony 100mm f2.8 macro is an excellent lens overall, it's a re-badge of the well respected Minolta 100mm f2.8 macro. The last Konica Minolta version is basically identical to this, but has their normal larger rubber ribs v the very fine Sony ones. Optical formula is the same, identical for these lenses. "Sony 100mm f2.8 Macro v Tamron 90mm f2.8 macro" I've used both lenses, and it's a wash optics wise ie they are very close overall in performance.