1. G-hack

    Russian cinema lens PO3-3M RO3-3M

    Hi folks, I am thinking of buying a Russian PO3-M3 / RO3-M3 cinema lens and attach it to a digital camera (Sigma FP or Pentax K70). The seller told me it has a KONVAS mount. How do I attach this to a modern digital camera? I have an OCT18 adapter but it does not look like it will fit. Do I...