I have used a small 18" blacklight to clear up yellowed supertaks and smc taks in the past. Just sit them right on the bulb and wait about a month or two.
----------------- J.C.O'Connell hifis...@gate.net ----------------- -----Original Message----- From: PDML [mailto:pdml-boun...@pdml.net] On Behalf Of Mark Roberts Sent: Monday, October 15, 2012 10:50 AM To: Pentax-Discuss Mail List Subject: Anyone have experience de-yellowing an SMC-Takumar lens? I've got an SMC-Takumar 35mm f/2 with the radioactive element that's severely yellowed. Has anyone done the UV light treatment to clear this up (usually with the more common 50/1.4)? Sunlight probably isn't an option for me here in Boston with winter coming on. I'm wondering what type of UV light might work best (or at all). -- Mark Roberts - Photography & Multimedia www.robertstech.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
