That's the FA series, Tim. F series don't provide MTF data. But I'm  
sure the DA series are better tuned for the DSLR bodies.

G

On Apr 14, 2007, at 11:24 AM, Tim Øsleby wrote:

> With the F-series Pentax introduced a chip storing the MTF data for  
> each
> individual lens. So with F or later the camera knows what opening and
> thereby speed that’s gives best resolution. When the camera knows  
> this, it
> has an easy task setting optimal exposure values including ISO.
>
> This concept might be improved with the DA series.


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