Again a 6x9 Wide Angle DIY Project

Matus said:
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One thing - I have noticed that on the helical mount you posted says "f=85mm" - is that the focal length? I am asking as you mentioned you wanted to use 65mm lens.

Looking forward to see the progress.
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Thank you for metioning your obeservation!
It is really hard to see on the image, but it is really a helical mount for a 65 mm lens.
 
I used the bigcamera.com website as a guide

I used the bigcamera.com website as a guide

ruby.monkey said:
Why not start with a decapitated Press for the body?
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I flat-topped a Universal Press Mamiya body (the rangefinder was broken) and made this body. I shot 6X9 with a Mamiya type III back (the one with the shutter release built into the back)

You can use any of the Mamiya Press bodies, but the Universal makes the most sense because the body opening on the film side was made large enough to shoot Polaroid Pack film at 3X4 inches and there are about twice as many peripheral backs for the Universal as for the older Press and Super 23 bodies.

Here is the flat top page on the bigcamera.com web site:

http://www.bigcamera.com/articles/MakeFlatTop.htm
 
Yesterday night I talked to my dad about this project and if he had a proper spanner wrench - and the result was that we build our own spanner wrench:



spanner wrench_b von thomas.78 auf Flickr


here you can see the mounting of the lens at the Focus Mount:



mounting the lens_b von thomas.78 auf Flickr


And here the Super Angulon 65 mm f/8 at the Focus Mount:



Super Angulon in Focus Mount_1b von thomas.78 auf Flickr



Super Angulon in Focus Mount_2b von thomas.78 auf Flickr


The weight of the lens with focus mount and both lens caps is 421 g.

Is it correct to assume that the optical main plane (?) is at (or very near to) the aperture blades and that at the (non retrofocus) lens the distance from the aperture baldes to the focal plane ( set to infinity) should be the focal lenght of the lens ?
 
That is the older multiformat Mamiya film back...

That is the older multiformat Mamiya film back...

That back has masks for 645, and 6X6. It's a reliable back when in good condition.

I bought the masks OEM new from Tony the Olive Oil and Mamiya guy. He can rebuild or provide refurb all the Mamiya Press camera equipment.

I have a type III back, with the special cable, that I am thinking of sending to him to refurb for me. The type III back is the one with the shutter release built into the end of the back, facilitating use of the ends of the back as camera grips.
 
Thomas78 said:
Thank you for your interest!

Unfortunately I have not continued the project right now.
But I will keep you informed when there will be progress on this project.
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I would like to create something myself as well.. Wide-angle, normal film or 120. Still in a concept phase, but based on the Mamiya back is very smart in my opinion!
 
Interested in how this will progress.

I´m thinking of going about the same ordeal slightly differently. Got hold of a Polaroid 600SE body (the bare bones of it, came sans lens board/front, no rangefinder unit, no covers or panels of any kind). Will use my 600SE backs from the 110A /600SE conversion, both Polaroid and 120, they obviously fit to the body no problem. Up front I too would like an Angulon 65, maybe not the super. Time will tell.

Hope you finish yours.
 
There was some minor progress on this project:

The camera body has been made out of sheet brass, which is bent to form a rectangle with rounded edges. There is also a tripot mount included:


IMG_4743 von thomas.78 auf Flickr

I will solder a mount for the film hoder at the back and a front plate.


IMG_4741 von thomas.78 auf Flickr

The front plate will take a ring out of aluminium (about 8 mm height) and this ring will hold the focus mount.

The focus mount will be screwed into the ring and front plate with M2 screws. To fit them into the mount, the holes had to be made a bit elliptical with a tilted drill:



IMG_4735 von thomas.78 auf Flickr


tbc...
 
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