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Such a fantastic lens! At the higher-end macro level, image quality is basically the same across all models, so it's the little things that differentiate the lenses. For Pentax, you can't go wrong with the Tamron 90mm, the Pentax 100mm WR, or either of the Sigma EX (DG) models. They're all sharp, and they all have excellent bokeh and out of focus transition. Though this model lacks the digital coatings, I've never had an issue with reflections or flaring -- top-notch all of the way. We'll break this down into pros and cons. Pros - built like a tank -- but not too heavy - balances superbly on the K-3 + grip - excellent MF ring - useful focus limiter - no difference in image quality matched against the DG model - usually priced under $250 used Cons - trickier balance without a grip (due to the weight) - occasional hexagonal bokeh when shot wide-open - screw on hood is tougher on storage (but not needed due to the deeply recessed front element - finish shows the most wear out of the three lenses I have mentioned in this review, when used over time Overall fantastic lens. Built like it will last forever, and just feels great matched up with a grip. With the depth of the front element, cleaning can be challenging, so I suggest buying a high-end UV filter, screw it on -- and forget about it. I bought mine used, and that's what the previous owner said he did. Sure enough -- not a spec of dust to be seen. I took it a step further, and bought a 72mm pinch cap for the hood, leave the hood on at all times, and just store the EX in a larger bag compartment. Highly recommended -- snatch one up if you can get your hands on one, as they are discontinued in the Pentax mount.Read full review
This is an older lens with a manual aperture. This not a problem since I don't use AE for macro. This lens is sharp and the autofocus is spot on. Works fine with my D 7100. Good value.
Verified purchase: Yes | Condition: Pre-owned
The Sigma 105mm f2.8 DG macro lens is a VERY nice lens! The auto focus is quick and quite accurate. One thing I enjoy about these Sigma lenses is the quick shift from Auto to Manual focus when you need it. Sharp images, great color!
Verified purchase: Yes | Condition: Pre-owned
Light, cheap and still sharp lens!
Verified purchase: Yes | Condition: Pre-owned
Value for money is perfect. Lightweight, easy to handle
Verified purchase: Yes | Condition: Pre-owned