Yashinon 127mm f4.5 question?

[Terrywoodenpic]

The Yashinon 127mm F4.7 Is fitted to the Poloroid 120 land camera, and it seems no other, so is quite rare.
Like other lenses fitted to the polaroid 110 and 120 range it has no filter thread as the front element is housed in a plain cover shell. Does any one know how to remove this, and or how to remove the front element from the shutter assembly?

The lens was designed to cover the 103mm x 78mm polaroid format, but does in fact cover a full 5x4 surprisingly well, but easily covers a 6x7 or 6x9 film back with extreme movements, but with only slightly on the long side of normal angle of view.

 

[wontolla]

Stevelmx5 may be able to answer this as he is always pimping some camera or other and his knowledge is second to none!

 

[stevelmx5]

The Polaroid 110 I converted had the Rodenstock Ysarex 127mm lens which I assume is the same as this? I didn't strip the lens down because mine was ok so I can't help with the disassembly but it certainly covers 4x5 apart from the fact the rear bellows surround on the 110 created rounded corners :0)

 

[stevelmx5]

Looking at this thread, it should just be a counter-clockwise thread to remove the front element retainer ring;

http://graflex.org/helpboard/viewtopic.php?t=705&sid=e7634b5b12a2e0bbcc562fe3ea4983e6

Might just need a flat piece of rubber on the ring to add some grip.

 

[wontolla]

Looking at this thread, it should just be a counter-clockwise thread to remove the front element retainer ring;

http://graflex.org/helpboard/viewtopic.php?t=705&sid=e7634b5b12a2e0bbcc562fe3ea4983e6

Might just need a flat piece of rubber on the ring to add some grip.

Or one of these?


Seriously, have a look HERE may be some info you can use!

 

[Terrywoodenpic]

Thanks for the information

The Yashinon differs from the usual Ysarex as the shutter goes to 1/500 and the stops go down to f90. It was only fitted to the Polaroid 120 cameras made in Japan for their market.
It has been suggested that it is a sharper and more contrasty lens. but at f 90 would be well diffraction limited.