|Posted: Sun May 31, 2015 4:30 pm Post subject: Some questions to Zeiss Jena 300mm F4
I just got a Jena 300 (with a shipping back waranty):
1.) It has some cleaning marks on the front Element and very tiny on the back
element; does this affect IQ?
2.) It already had a M42 mount on it, but I can't remove it. Was there a P6
and a M42 Version or should I be able to remove the adapter?
Thanks for your help!