Round threaded 112mm contrast filters for black-and-white photography are really hard to find. This red Heliopan filter is in excellent condition. It has 112x1 threads, not 112x1.5. Nevertheless, it's usable with 1.5mm-pitch female threads like those found on Schneider’s Center Filter IVa (for 90mm Super Angulon XL and 150mm Super Symmar XL Aspheric) and IVb (for 72mm Super Angulon XL and 150mm Nikkor-SW on 8x10) - it will screw in a partial turn before jamming and stays put in my experience, though I never tried walking around with it that way all day and wouldn’t advise doing so.
Heliopan ceased all operations a couple of months ago so there will never be more of these made.
My asking price of $115 includes insured US shipping and PayPal fees.
Heliopan ceased all operations a couple of months ago so there will never be more of these made.
My asking price of $115 includes insured US shipping and PayPal fees.
