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David
Joined: 13 Apr 2011 Posts: 1869 Location: Denver, Colorado
Expire: 2013-01-25
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Posted: Sat Jul 09, 2011 12:05 am Post subject: Modifying a Folding Camera Lens for SLRs and DSLRs |
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David wrote:
I tried the search function a couple times but kept getting a 404 error, Search.php is missing. Is that just me?
Anyway, I got a lot of miscellaneous stuff off eBay today. One of the items is an old Compur-Radio shutter and Steinhall Munchen lens combo that looks like it came from a folding or box camera. I'd like to modify this to work on my Pentax. I should be able to create a basic mount that will allow me to connect it to a K-mount bellows (using a reversing ring). But what tips do you have for modifying this itself? I want to keep the aperture intact, but need to remove the shutter blades. Any input into that process?
For those of you who have tried this before, what tips do you have? What did you learn during the process that you wish you'd known beforehand? _________________ http://www.youtube.com/user/hancockDavidM |
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Attila
Joined: 24 Feb 2007 Posts: 57840 Location: Hungary
Expire: 2021-11-18
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Posted: Sat Jul 09, 2011 12:11 am Post subject: |
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Attila wrote:
Use less , lot of effort and result will be just same or worst than an SLR lens what you have already. All DIY lens has pretty short life time ... _________________ -------------------------------
Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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visualopsins
Joined: 05 Mar 2009 Posts: 10463 Location: California
Expire: 2021-06-22
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Posted: Sat Jul 09, 2011 1:03 am Post subject: |
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visualopsins wrote:
Could be fun and educational! Agree complete that modern lens is probably better all around, but results from folder lens on dSLR might be interesting, with retro look.
I'd use the shutter in lens with camera in Bulb mode, or, if lens shutter has Bulb position, then use camera shutter. I do this with Pentax 6x7 90mm leaf shutter lens on 5Dc. _________________ ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony A7Rii, Spotmatics II, F, and ESII, Nikon P4
M42 Asahi Optical Co., Lenses:
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
Other lenses:
Carl Zeiss Jena Flektogon 2.4/35
SMC PENTAX 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 (51BB), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto
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greg
Joined: 21 Mar 2009 Posts: 683
Expire: 2012-12-03
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Posted: Sat Jul 09, 2011 1:11 am Post subject: |
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greg wrote:
Check out our member Vilva's website. Maybe gather a six pack and a bag of chips beforehand so you don't exhaust yourself.
http://galactinus.net/vilva/retro/index.html
I have copied and built from his website myself for a couple years. It is fun to experiment. |
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Nesster
Joined: 24 Apr 2008 Posts: 5883 Location: NJ, USA
Expire: 2014-02-20
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Posted: Sat Jul 09, 2011 1:53 am Post subject: |
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Nesster wrote:
If you have a bellows and an extension tube or something similar, it's pretty simple to try out. Note that old shutters have a T setting, or at least a B. In T you click the shutter once to open, and again to close. In B you can simply jam something temporary in the shutter trip arm groove to keep the shutter open.
Use insulating tape or similar, something that compresses, and wrap that around the rear end of the lens... it should press fit, more or less, into a tube. Finish off with some electrical tape or similar, to hold the lens/shutter onto the tube... mount tube on bellows, bellows on camera.
The best bellows are M42 as they are cheap and the tubes are cheap, all you need is a M42 -> K adapter.
Results are fine, depending on lens and conditions of the shot. _________________ -Jussi
Camera photos
Print Photographica
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