90mm Optar similar to 90mm Angulon?

[Gene McCluney]

Just wondering if these two tiny 90mm lenses are similar in optical design?

[Dan Fromm]

No. Absolutely not. The Raptar/Optar is a 4 elements in 4 groups double Gauss type. The Angulon is a 6 elements in 2 groups angulon type, some refer to it as a reversed dagor type.

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