Excerpt: I was surprised by the very good optical performance of this cheap manual focus lens, which I suspect is a stripped version of its autofocus F and FA 80-200mm siblings. In fact, the optical formula of all three lenses is identical (11 elements, 7 groups, 8 blade aperture). I do have the FA 80-200 version, and the differences seem purely cosmetic, except this manual focus lens has a wider manual focus ring in front and weighs much less (under 300gm vs about 500 gm).
Excerpt: I had no need to buy this, but when an eBay auction came up offering the FA 35-80mm f4-5.6, the FA 100-300 f4.7-5.8, and this lens together, curiosity got the better of me, and £43 including postage later I was the proud owner of all three. I apportioned this total to give the indicated price.
Pros: Light, sharp, good colour and contrast, across the full zoom range
Cons: Slow, narrow zoom range, and there are better (though maybe not as cheap as this!)
Excerpt: One of the first lenses I purchased when I was looking to play around with cheap. lower-end glass. I only paid a combined $35 (the seller also had it's littler brother, the 35-80) + shipping, and was pleasantly surprised when I received both lenses in almost new condition, complete with papers. I learned right away that these were slow lenses that needed light to have a chance, so I waited until we had a little sun, and then took the 80-200 out. I was not disappointed.
Pros: quick auto-focus, sharp enough, good color redering
Cons: physically unattractive, not fun for manual focus, not good for use with a CPL
Summary: I have this lens but was considering buying the current 55-300 Pentax offers to get more zoom for wildlife photography. While this lens is sharp with little artifact, the current crop of Pentax lenses were horrid. For under $100 this is a remarkable lens and produces a much better image than the current group offered by pentax. Image quality was better with a cropped image from this lens (than a zoomed in image @ 300mm with the "modern" lens).
Excerpt: My copy of this lens produces excellent images, especially for the price (I paid $23 USD plus $10 shipping). If I stop it down a little it can outperform lenses that cost much more. I was shocked at the sharpness of some images I took on a sunny day at 200mm, f8 aperture, and there wasn't even any purple fringing or chromatic aberrations. It also performs pretty well wide open too at all focal lengths, and makes a great outdoor wildlife or portrait lens.
Pros: Sharp, little to no Chromatic Abberation, cheap price
Cons: Not fast aperture, plasticky build, not the prettiest looking lens
Excerpt: I found this used locally for $70. Pretty shocked at the sharpness and general lack of major aberration issues. It's light, compact, easy to handle, focuses nicely. I find the colors are GREAT too. A real stunner of a lens at this price.
Summary: A superb Pentax A lens that works very well with my new Pentax K-30 dslr. When I purchased my K-30 I was wanting to be able to use lenses I had for my Pentax Super Program slr camera. They work fine too. This size lens I did not have and at a great Ebay price I have a lens that covers a broad range of shot settings from 80-200mm. It is small and lightweight. There are many great lens values on older lenses that still have plenty of photographic life left in them on Ebay!