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MarcinS
Joined: 30 Oct 2010 Posts: 43 Location: Poland
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Posted: Tue Apr 06, 2021 4:02 pm Post subject: DIY Ultra large format camera [50x50cm] |
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MarcinS wrote:
I came up with the idea to build a 50 × 50 cm plate camera. I have not built such a large camera yet. The biggest challenge was the requirement for a slidable base. It was supposed to be 60 cm long when slide down and 150 cm unslide. For quite a long time, I had been inventing the kinematics of the frame, trying to fit the racks and gears in a small space, and make it strong enough so that when unslided (the maximum size) it would not shake and due to its own weight it would not break. The structure was to be stiff, durable and mobile. I used Freecad parametric 3D modeler to make the design.
Then it was time to design the standards, front with tilt, rise, fall, shift, swing and rear with swing and tilt. Here too, 3D models, production and assembly drawings were created,and according to this the entire front and rear standards of the camera were manufactured, as well as the plate holders, one square, 50x50cm and second one for vertical and hotizontal 40x50cm plate.
This is a result
If somone want such a camera or any other large format camera please contact me
I will be happy if I can make such a camera for someone here ![Smile](images/smiles/icon_smile.gif) _________________ bronica s2a, arsat mc 30/3.5, zenzanon 40/4, nikkor-h 50/3.5, nikkor-p 75/2.8, zenzanon 80/2.4, zenzanon 150/3.5, czj sonnar 180/2.8, 2x120(220) filmbacks, polaroid back, tilt bellows type II
Last edited by MarcinS on Tue Apr 06, 2021 4:20 pm; edited 1 time in total |
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visualopsins
![Level 4 Level 4](rating4.gif) Joined: 05 Mar 2009 Posts: 10946 Location: California
Expire: 2025-04-11
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Posted: Tue Apr 06, 2021 4:19 pm Post subject: |
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visualopsins wrote:
The dream camera! To examine a 50x50cm piece of slide film... _________________ ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony ILCE-7RM2, Spotmatics II, F, and ESII, Nikon P4
Lenses:
M42 Asahi Optical Co., Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200, Tele-Takumar 1:5.6/200, 1:6.3/300, Macro-Takumar 1:4/50, Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm, Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element), Super-Multi-Coated Fisheye-TAKUMAR 1:4/17, Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500, Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100, Super-Multi-Coated Bellows-TAKUMAR 1:4/100, SMC TAKUMAR 1:1.4/50, 1:1.8/55
M42 Carl Zeiss Jena Flektogon 2.4/35
Contax Carl Zeiss Vario-Sonnar T* 28-70mm F3.5-4.5
Pentax K-mount SMC PENTAX-A ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (151B), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto (Kiron)
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lumens pixel
![Level 3 Level 3](rating3.gif) Joined: 27 Feb 2019 Posts: 854
Expire: 2021-06-25
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Posted: Tue Jun 08, 2021 11:23 am Post subject: |
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lumens pixel wrote:
I ignored that 50 50 film existed! Unless you are able to produce it also but yourself which would not surprise me considering your skills!
Maybe will you use emulsion on glass or something like that. Please tell us more and post some results.
Now I remember why when Barnak "created" the 24 26 format it was called "small". _________________ Lumens Pixel
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Minolta SR mount: 16 2,8; Sigma SuperWide 24 2,8; 28 2,5; 28 2,8; 28 3,5; 35 2,8; 45 2,0; 50 1,4; 50 1,7; 50 2,0; 58 1,4; 85 2,0; 100 2,5; 100 4 Macro; 135 3,5; 135 2,8; 200 4; RF 250 5,6; 24-35 3,5; 35-70 3,5; 75-150 4; 70-210 4
Canon FD mount: Tokina RMC 17 3,5; 28 2,8; 35 2,8; 50 1,8; 50 3,5 Macro; 55 1,2; 135 3,5; 135 2,5; 200 4,0; 300 5,6; 28-55 3,5 4,5; Tokina SZ-X SD 270; 70-150 4,5; 70-210 f4; 80-200 4L; Tokina SZ-X 845
Tamron Adaptall: 28-80 3,5-4,2 (27A); 70-210 3,8-4 (46A); 60-300 (23A); 90 2,5 (52B); 35-135 3,5-4,5 (40A)
Tamron SP: 20-40 2,7-3,5 (266D) |
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arri
![Level 1 Level 1](rating1.gif) Joined: 13 Jul 2014 Posts: 91
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Posted: Thu Jun 24, 2021 8:30 pm Post subject: |
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arri wrote:
X-Ray film are available in this sizes and larger as well and it is much cheaper than standard film material.
But it is only sensitive for blue light or blue and green, blind for red.
Best choice are mammografic films because this once are only coated on one side, the other X-ray film are coated on both sides.
Here´s sample I made with a fuji x-ray film, size 9x12cm, developed in Adox FX-39 II. ISO 80
I used an uncoated lens because it reduces the level of the contrast.
I pre exposed the film with zone II
![](https://live.staticflickr.com/65535/51227003570_346b742665_h.jpg) |
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Zamo
![Level 1 Level 1](rating1.gif) Joined: 08 Feb 2019 Posts: 168
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Posted: Thu Jun 24, 2021 9:15 pm Post subject: |
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Zamo wrote:
Impressive. My respects. ![Like 1 small](images/smiles/like-1s.gif) |
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DConvert
![Level 3 Level 3](rating3.gif) Joined: 12 Jun 2010 Posts: 921 Location: Essex UK
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Posted: Thu Jun 24, 2021 9:53 pm Post subject: |
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DConvert wrote:
Wow! Fantastic shot, (even after scanning, which I'm sure must have reduced it's impact compared to the negative) & some useful tips on film options too.
![Friends](images/smiles/friends.gif) |
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arri
![Level 1 Level 1](rating1.gif) Joined: 13 Jul 2014 Posts: 91
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Posted: Fri Jun 25, 2021 6:47 am Post subject: |
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arri wrote:
What I know about this film is that it is high in contrast and it is orthochromatic only.
In practice it is recommended to take objects with only small highlights.
It is very difficult to get any texture in the skies, for example but a pre exposure helps.
I use this film with uncoated lenses because the internal reflexes are working like an additional pre exposure.
A Tessar 4.5/135 is a good choice in 4x5". I really like this lens but thousands of others are available in the net.
For this picture I used a Swiss Made Emil Suter Basel "Stella" 5/160mm @f22
Nearly 100 years old.
For ULF I have a Schneider Trible Convertible Symmar 6.8/360mm with only a very slight coating, it is a perfect lens for this films and B&W work as well but for me the focus is too long.
Two separate usable lens cells, 12/560mm and 13/700mm
Schneider recommended it for 16x20" formats. The image circle is 26" (650mm) minimum.
I guess it can be use with a 20x20" cameras like shown. Mounted in a synchronised coumpound IV shutter.
Maybe when someone is interested please don´t hesitate to contact me, it is much cheaper than a Cooke Triple Convertible but has an equal optical quality.
This x-ray film, a Fuji UM-MA, has a blue carrier which makes it a little bit problematic when you want to enlarge it with multi contrast paper.
The edges have large radii, you can imagine the size when you have a look to the sample, the upper right edge shows the radius. Some photographs don´t like it when they make contact prints.
Now I guess the film has ISO125
I try some shots with a medium format camera and the negatives are too dark with ISO 80
I use the developing times of the Ilford FP4+
Its a good choice for starting
It costs around 65 Euros for 100 sheets in 18x24cm
I think in USA and England it is easier to get this films in imperial sizes.
Larger formats are available. |
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spillo19
Joined: 24 Mar 2023 Posts: 1
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Posted: Fri Mar 24, 2023 2:54 pm Post subject: |
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spillo19 wrote:
Hey man can we talk about the project Im planning to do a 50x60cm camera.. I hope to have some dwg of your project ðŸ˜ðŸ˜ðŸ˜it's awesome |
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kds315*
![Level 4 Level 4](rating4.gif) Joined: 12 Mar 2008 Posts: 16621 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Fri Mar 24, 2023 3:38 pm Post subject: |
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kds315* wrote:
Awesome!! _________________ Klaus - Admin
"S'il vient a point, me souviendra" [Thomas Bohier (1460-1523)]
http://www.macrolenses.de for macro and special lens info
http://www.pbase.com/kds315/uv_photos for UV Images and lens/filter info
https://www.flickr.com/photos/kds315/albums my albums using various lenses
http://photographyoftheinvisibleworld.blogspot.com/ my UV BLOG
http://www.travelmeetsfood.com/blog Food + Travel BLOG
https://galeriafotografia.com Architecture + Drone photography
Currently most FAV lens(es):
X80QF f3.2/80mm
Hypergon f11/26mm
ELCAN UV f5.6/52mm
Zeiss UV-Planar f4/60mm
Zeiss UV-Planar f2/62mm
Lomo Уфар-12 f2.5/41mm
Lomo Зуфар-2 f4.0/350mm
Lomo ZIKAR-1A f1.2/100mm
Nikon UV Nikkor f4.5/105mm
Zeiss UV-Sonnar f4.3/105mm
CERCO UV-VIS-NIR f1.8/45mm
CERCO UV-VIS-NIR f4.1/94mm
CERCO UV-VIS-NIR f2.8/100mm
Steinheil Quarzobjektiv f1.8/50mm
Pentax Quartz Takumar f3.5/85mm
Carl Zeiss Jena UV-Objektiv f4/60mm
NYE OPTICAL Lyman-Alpha II f1.1/90mm
NYE OPTICAL Lyman-Alpha I f2.8/200mm
COASTAL OPTICS f4/60mm UV-VIS-IR Apo
COASTAL OPTICS f4.5/105mm UV-Micro-Apo
Pentax Ultra-Achromatic Takumar f4.5/85mm
Pentax Ultra-Achromatic Takumar f5.6/300mm
Rodenstock UV-Rodagon f5.6/60mm + 105mm + 150mm
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jamaeolus
![Level 4 Level 4](rating4.gif) Joined: 19 Mar 2014 Posts: 2958 Location: Eugene
Expire: 2015-08-20
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Posted: Sat Sep 23, 2023 3:59 pm Post subject: |
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jamaeolus wrote:
Impressive. _________________ photos are moments frozen in time |
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MarcinS
Joined: 30 Oct 2010 Posts: 43 Location: Poland
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Posted: Sat Sep 23, 2023 4:02 pm Post subject: |
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MarcinS wrote:
spillo19 wrote: |
Hey man can we talk about the project Im planning to do a 50x60cm camera.. I hope to have some dwg of your project ðŸ˜ðŸ˜ðŸ˜it's awesome |
Sure, drop me an email _________________ bronica s2a, arsat mc 30/3.5, zenzanon 40/4, nikkor-h 50/3.5, nikkor-p 75/2.8, zenzanon 80/2.4, zenzanon 150/3.5, czj sonnar 180/2.8, 2x120(220) filmbacks, polaroid back, tilt bellows type II |
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