My questions is: has anyone successfully adapted a K-mount lens to an F-body?
I am trying to adapt my pentax lenses to my beloved Nikon FM2n body.
I purchased an adapter from Urth (previousy known as Gobe) which made the mount possible. The DF was very shallow and the image became somewhat sharp above F8 (images attached below). This only occured when using a 50mm, and seemed mostly fine with a 85mm.
Upon doing alot of research online, some people say Nikon is an universal "donor" of lenses, while unable to receive any, due to a differented registered distance (F mount = 46.50mm and K-mount 45.46).
Yet some people mention that if the adapter has an optical glass (as this one does), the same could be adapted at a loss of the infinite focus "lock".
The manufacturer said the short DF shouldn't occur, and it happened due to a manufacturing error, but the quality seems impecable and I'm dubious its a manufacturing error.
I'm not looking to get a new body or a change lens etc, I'm trying to understand if the adapted should work or if the adaptation is possible.
Thank you for any insights!
Link to the adapter:
Registered distances discussion:
Anyone here ever converted K mount to F mount and retained full functionality? - PentaxForums.com