Comments about Zeiss Zeiss Ikon 100mm f/2.0 Makro-Planar T* Manual Focus ZK Series Lens for Pentax K-Mount SLR Cameras:

This, like most Zeiss lens, is a great lens. I've used zeiss lens on Contax, Hassy, and Sony Cameras.

When used correctly, it's awesome. It can produce razor sharp images, with perfect color and contrast. It is a macro lens of unmatched preformance. The bokeh is perfect. The images are clear and nearly always perfect. There is little to no distortion. But there is a price to be paid.

First, the lens is expensive. In fact, it will probably cost more than the DSLR your mounting it too. But, Good glass costs more, and this is one of the best. The other "problem" is you need a certain amount of knowledge and experience to use it.

What I mean is, you have to be able to truly understand exposure, and manual photography. This is a manual focus lens (but most great macro photographers will tell you to manual focus anyway). But you can't use your cameras "auto everything" capabilities. You have to set your camera to manual, or if your lucky to aperture priority. You have to meter with either Manual or Center weighted. In essence, you have to understand the basic of photograpy!

You have to understand exposure, and how to manipulate light. So No more autofocus. No setting the camera to "auto", and just blindly hitting the fire button. This is pro grade lens. It demands your attention.But, in return It will outpreform any other macro - when used correctly.

It's a great lens, and if you know what your doing, a fun lens. But it isn't for everyone. In fact, it's probably not for most photographers. And that's really too bad