|Posted: Thu Feb 10, 2022 11:35 pm Post subject: WTB: Sigma 22.5 Normal filter
I'm searching for the clear 22.5mm filter for Sigma Filtermatic lenses (for my 8mm circular fisheye).
I have the four color ones but the lens is missing the "normal" clear filter, and apparently you should always have one in there for best optical performance. It's fine as it is, I'm more interested if it would even give significantly better results.
PM if you have one for sale