Want to Buy WTB: Konica f mount lens

[gkardmw]

Hi,

I have come into possession of a Konica fp camera but it does not have a lens. I am primarily interested in the 52 mm f mount lens (the f mount is prior to the AR series of lenses). Anyone have one they are willing to part with?


Dave

 

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[gkardmw]

I just want to bump this one time just in case.

 

[Radost]

Fp or FP1?

 

[gkardmw]

FP - the lenses for it predate the AR mount and is not that common, at least from my searches in the USA. The FP-1 takes the AR mount and is more modern. The f mount lenses are marked " Konishiroku" and not Konica but both have the Hexanon name.

 

[davela]

responded

 

[gkardmw]

For anyone that is interested, here is a picture of the camera body. If you look at the mount around the 7 o'clock position, you will see a little "latch" that rotates back and forth when the shutter button is pressed. I assume this interacts with a similar device on the lens mount and allows the diaphragm to open and close. Not sure if this is unique to this lens mount or not, but I have not seen it before. The bayonet mount is somewhat internal - the exterior of the mount is very smooth otherwise.

You can see the "latch" that it interacts with on the lens in the 3 o'clock position (grabbed this picture from *bay).

 

[davela]

Yes the little trapezoidal shaped thingy on the lens is a cam which mates with, and is pushed by, the little tear-dropped shaped cam just below (left hand side) of the camera when the shutter is depressed. The cam on the lens then rotates a shaft which is linked to the iris activation mechanism inside the lens. The whole system actually works pretty smoothly in practice.

The small pin beneath the lens mount on the camera locks the lens in place rotationally by mating to the little notched-out piece seen protruding form the back of the lens. This pin motion can be actuated by the shorter cylindrical button seen below the lens mount on the camera. Depressing this button pulls the pin out of the slot and is necessary to remove the lens.