Bob wrote:
>On the older series of prime lenses the optimal aperture >was marked in a different colour from the others. No. That was not the optimal aperture. It was hyperfocal focusing at F:8. A sort of "F:8 and be there" kind of thing. Pål - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
