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Forum: Pentax SLR Lens Discussion
03-05-2019, 09:10 AM
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The FA 100/3.5 is probably the smallest, lightest and cheapest lens that meets your requirements. Its build quality is very low, and it's fairly vulnerable to debris getting in the plastic-on-plastic focus assembly. A DA 18-55 feels like a Limited lens in comparison. Optical quality is good.
I have a Tamron 52E, and it's very good, metal barrel too. I used it a lot for your purposes, an AF short tele. It has a focus limiter switch, so for general use you can limit its close focus to ~22 inches. Filter size is 52mm. I've always liked it. It does have the same problem that the other Tamron 52 Adaptalls have, an occasional purple spot in the center of the frame at f11 or smaller. This is mostly a digital SLR problem because of the flat rear element and flat sensor. I think it only shows up with a bright background and dark center - the lens is terrible at product shots of a lens in a light tent. See the reiews for the 52BB to see what that's like. Also it's harder to get to 1:1 magnification. I bought a Tamron 90/2.8 272 which solves the purple spot and 1:1, but is somewhat bulkier. The 52E isn't really a small lens except next to other macros. Now I have the classic "which to sell" problem.
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