Hi Mark This Yashica was my first SLR. Nice camera except the fact that you measure light with aperture shot down. I remember borrowing a Pentax screwmount 35mm lens for it. So, they can be used allright. I still have pictures on my wall, made with this combo. (I think the reason why I switched to Pentax are theese pictures - they came out very nicely). Best Regards Jens - 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 .