>I've read somewhere (print, on-line) that some Pentax >screwmount lens glass are turning yellow. What causes >this and which lenses are involved? And most >importantly, when the glass finally turns yellow is >the lens rendered unuseable or can I still use them >for certain applications (B&W maybe)? >Thanks. >Francis M. Alviar
Francis, here is a link to a small article on yellowish Takumar lenses. The 50/1.4 and 35/2 are the only ones mentionned to be prone to yellowing. Also, the author proposes a cure! But I've not done enough manual work in my life to be sure to cure a yellow Takumar on the first try... Andre http://www.hermes.net.au/bayling/repair.html -- - 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 .
