Lanthanum glass fans

[OM]

Not sure if it's of interest but here's a great technical PDF about Lanthanum glass as used in many lenses:

http://www.austincc.edu/photo/pdf/lanthanum.pdf

[martyn_bannister]

Interesting indeed - especially the questions at the end Thx for sharing.

[symphonic]

Thx! saved for later reading.

[56 DIN]

Thx

[AhamB]

Yes, that was interesting, especially the part explaining that it's the electron density that controls the refractive index. Most of the questions at the end were almost self-explanatory, IMO.

[indianadinos]

Thanks for sharing, saved for late reading ...

[OM]

Glad it's of interest - I thought I was the only Lanthanum addict in town