On 15/09/2020 00:55, RichA wrote:
They make me curious. I've seen some weird effects, plus you can determine what kind of diaphragm the lens had. But I did see something odd the other day. Looks like the lens had something over it.

https://pbase.com/andersonrm/image/171038482

Pretty common in the Hollywood days to use a gauze to soften portraits
of ladies of a certain age.