On 2 Jan 2005 at 22:52, Andre Langevin wrote:
The SMC Pentax K 35/2 is almost the same lens as the yellowing SMC Takumar 35/2. Has anybody ever seen a yellow K lens?
Pentax said the K lens was slighly modified from the Takumar, but diagrams are identical. This could mean they changed the... yellowing element.
Maybe it's the inter-element glue that's discoloured?
Rob Studdert
On the Takumar lens at least, it must be the lens element itself because UV light has cured such yellowed lenses. Unless UV can "dis-yellow" glue.
Andre
