Comments about Tamron Tamron SP 90mm f/2.8 Di 1:1 AF Macro Auto Focus Lens for Pentax AF - with 6 Year USA Warranty:

The large focus ring makes this lens easy to focus manually and is a definite plus since MF is usually what you will use when doing macro photography. The lens is also very sharp, even wide open. AF speed is good for a macro lens when you make use of the focus limiter.

The push/pull AF/MF switch on the lens seems a little weird at first, but it has a very nice feel. Just remember to switch AF/MF on the camera body as well. One slight issue that I found is that when the lens is off camera and set to AF, it is somewhat easy to accidentally push the extending part of the lens forward (especially when the lens hood is attached in reverse), but other than that, I haven't noticed any sort of focus creep.

In my use of this lens so far, I feel that it offers a very comfortable focal length and I don't really feel the need to change lenses very often.

Comments about Tamron Tamron SP 90mm f/2.8 Di 1:1 AF Macro Auto Focus Lens for Pentax AF - with 6 Year USA Warranty:

This lens opened up a whole new world of photography for me. I have another macro lens, but this is GREAT! When the world of winter was bleak and gray, I took things out of drawers and cupboards and took photos of them. I had a lot of fun experimenting and learning. And I think I took some good photos! It's good outdoors for garden macros, too. It isn't always good for longer shots, but I've gotten some good ones there as well.

Comments about Tamron Tamron SP 90mm f/2.8 Di 1:1 AF Macro Auto Focus Lens for Pentax AF - with 6 Year USA Warranty:

I have six or seven Pentax mount lenses that range in age from about 30 years to less than a year. This is the best lens in my bag. A macro lens is not a first or second lens for most beginning photographers, but you should own one if you intend to do more than just snapshot photography. It opens up an area of photography that lends itself to great, eye-catching pictures. When I am walking around a park or botanical garden in bloom, this is the lens on my camera and I rarely take it off. It is exceptionally sharp, and the manual focus is easy to use. Manual focus control is very important for macro photography because you will rarely use autofocus when you are deciding which half of the bee on the flower you want in focus. I can't imagine anyone being dissappointed with this lens. On an APS-C sized camera (all Pentax DSLRs) it makes a fine 135mm telephoto lens when not serving as a macro lens. It is no coincidence that your best pictures are those taken with your best lenses. This will be one of your best lenses.

Comments about Tamron Tamron SP 90mm f/2.8 Di 1:1 AF Macro Auto Focus Lens for Pentax AF - with 6 Year USA Warranty:

I use this lens on my D80 Nikon and it has exceeded my expectations in every respect. It's a bit slow when autofocus is enabled, but for macro work I almost always manually focus, so the slow focus isn't a big deal.