James Markus
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 Re: Manual Focus Nikon Glass | |
George,
I did something similar back in the 1970s to adapt my Exa, & Exakta cameras to a 960mm refactor telescope. I used a metal body cap, and filed out the center until an extra lens mount barrel would just protrude through the cap. Painted all with black magic marker, and glued it with 24 hour epoxy. I always was worried that it would fail, but it never did.
Jim
GeorgeBo wrote:
Just used what I had. Some Gorilla Glue two part epoxy. 5 minute set. But should have used something with a quicker set time. Had to make sure it did not flow into areas it should not have been 
Nikon made a number of lenses for the Bronica S/EC line of 6x6 medium format cameras. Looking at the Complete Nikon System guide by Peter Braczko...
Production lenses of 40mm, 50mm, 75mm, 105mm, 13.5cm, 200mm, 250mm, 300mm, 350mm, 400mm, 500mm, 600mm, 800mm and 1200mm. They also had a 30mm f/2 prototype but never went to production.
I could not imagine using those long lenses on a 6x6 film camera. The tripod would have to be a concrete pier for stability
There were variations of most lenses in f stop and coatings.
I have the 40, 50 and 75. I think Samy has others.
George
leighton w wrote:
GeorgeBo wrote:
Got the adapter built, but too late for testing today. Need to get the rear rail distances measured and marked for each lens. To make sure that the digital back does not come too close to the rear of the lens and hit the sensor. Not good
Sacrificed a Bronica EC focusing helicoid (had a spare one) and had to rig up an aperture control lever spring on the helicoid. That function is normally accomplished inside the Bronica body.
Overall I think it turned out well. I now have aperture control and although I don't need focus function on the lens (controlled by the Cambo Actus rails), I still have that option.
The Bronica medium format film cameras actually had a tilt, shift, swing bellows for their cameras. So thinking the performance of the Nikkor Bronica lenses may be ok in this set up. I hope to get some time this week to do some test shots. Really need to give the epoxy a day to fully cure anyway.
It was a fun project with the day off from work today.
All shots with the Micro-Nikkor 55mm f/3.5
George
leighton w wrote:
GeorgeBo wrote:
I love experimenting with usage of these old lenses. Does well on the larger format sensor.
Next up, modifying a lens board/adapter for full tilt and shift using the Nikkor Bronica lenses. Why? Because 
Just waiting for epoxy to cure, come up with a spring to allow aperture control, then some black matte paint. Almost done 
G
rafaelcasd wrote:
GeorgeBo wrote:
Hay there
Wheat field in southern Va late yesterday. Using the 28mm/3.5 PC Nikkor with 8-10mm fall to give more foreground. Slight motion blur from the wind.
Second one repositioned to eliminate the sky. Same fall on the lens.
George
That is an interesting use of the PC lens George, will have to remember and try it.
We need to see some pics of it after it's mounted on the camera. Oh, and results from it.
Looks factory from here. I have two questions, both of them random. What type of epoxy did you use? And, how many Nikon lenses are there in the Bronica mount?
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