A real killer

[dynachrome]

My 35/2 with the concave front element is the 35/2 FD SSC. I gave it a light treatment which must have gone on for eight months. This was done with a CFL lamp amd aluminum foil on the bottom. If I had a UV lamp it would have been faster. The color is almost completely clear. If I had to shoot something on color slide film where the exact color was critical I might switch to a 35/2 New FD. The FD SSC is extremely sharp. I have had lenses completely overhauled too. If you enjoy using the lens it's worthwhile.

[brucemuir]

When you do a "light treatment" is there danger of the lube warming up and migrating onto the blades?

I have a 4x5 lens or two that look like they may have the start of some fungus and was going to set then in the sun.

[benjiboy]

I just wrapped my Thorium lens in Foil and left it on my bedroom window ledge for a couple of months.

[dynachrome]

That's why I used a CFL. They put off very little heat. It would probaby be faster to use a UV lamp but I don't know how hot that might get. Regular window glass fiters out some UV light but not all of it and most people have reported leaving the lens on a windowsill.

[benjiboy]

Bruce-I gave my lens the window ledge treatment before I had had it CLAd for that reason.