SMC Takumar 28mm f2.8.
At 05:38 PM 3/13/2003 +0100, you wrote:
Then they are not compatible. Pentax has always meant compatible to allow you make use of a lens turning a lens into a fixed aperture >makes it relatively useless since you have lost half your control
over the lens, not to mention issues of sharpness, etc.
Pentax has never said that the *ist is compatible. They have talked about "usable lenses". It's still possible to use K-mount lenses...
For example, I have a M 28 f/2.8. I want to use it on the *ist, because of the lovely character the M 28 has. Now, I set the lens at f/2.8 and the *ist displays a shutter speed of 1/125. But I don't want to use it at f/2.8, I want more depth-of-field. I want to use it at f/8, so I set it to f/8 - and the lens stops down ("instant depth-of-field") and I set the shutter to 1/15 so I get a correct exposure. Now I fire the shutter.
Best wishes, Roland
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