Kathmandu
Joined: 09 Dec 2009
Posts: 1479
Location: (Kathmandu,Nepal. Currently)Pacific Northwest, USA
Expire: 2012-04-08
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 Posted: Sat Feb 18, 2012 3:07 pm Post subject: Re: Cleaning a Soligor 400mm f/6.3 |
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Kathmandu wrote:
| LGM wrote: |
Hi there,
I picked one of these up for almost nothing at a camera fair last week. It's in pretty good condition - no dings or scratches and very little dust, but there is a bit of fungus on the front and rear elements and I was wondering if anyone here had any experience with cleaning these kind of lenses or could point me in the direction of a how-to guide somewhere online. I've never attempted to open up a lens before but I've heard these cheap old 400mm telephotos are a very simple design, so it might be a good one for me to start with. Also can anyone tell from the pictures whether this is a dedicated m42 lens or a T4 mount lens with an m42 adapter on top?
Thanks.
EDIT: New to the board. Looks like I can't post pictures yet.  |
Here we ago and welcome.  . You should be able to post photos to your hearts desire now.
Appears the fungus is behind the front element? I dont have this particular lens but I would venture to say that the name ring has to be unscrewed using some sort of rubber/gum friction tool.
One thing to be careful with is not to marr/scratch the front element-while using the friction tool.
Putting a few drops of lighter fluid in the crack between the name ring and filter ring will help the process a lot-as sometimes the threads there may require a solvent like naptha to loosen up .
I urge you to wait a little to hear more from others-you will probably hear from someone who has had experience opening one of these lenses before-
Sometimes on these bigger lenses , you can unscrew the whole front cell, and remove the back element of of the front cell-to get to your the inner side of your front element where the fungus appears to be.
Cheers and good luck
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kathmandu
Sony α 700 DSLR
Last edited by Kathmandu on Sat Feb 18, 2012 3:32 pm; edited 5 times in total |
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LGM
Joined: 18 Feb 2012
Posts: 3
Location: London
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| Posted: Sat Feb 18, 2012 3:17 pm Post subject: |
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LGM wrote:
Ah, thanks very much! Yes, there's quite a bit on the front element, but luckily it's just around the edges so it's not a problem on my crop sensor camera. Still I don't want it spreading, so if I can clean it off that'd be great. I had a go at removing the name ring yesterday using a plastic cup with a rubber glove stretched over the rim (very cutting edge stuff) but it's on pretty tight - I'll try your lighter fluid suggestion and give it another go after that. |
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visualopsins
Joined: 05 Mar 2009
Posts: 11003
Location: California
Expire: 2025-04-11
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| Posted: Sat Feb 18, 2012 5:03 pm Post subject: |
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visualopsins wrote:
Remove the tripod mount to reveal a joint in the tube. The two parts unscrew to give access to the rear element, which iirc, can be removed with a lens spanner. I haven't removed a front element, but I think the name ring when removed does reveal the next steps.
| LGM wrote: |
| [...}on the front element, but luckily it's just around the edges so it's not a problem on my crop sensor camera.[...] |
Actually, the outer circumference of the front element IS used even with crop sensor. Only stopping down cuts off light from front element circumference.
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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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LGM
Joined: 18 Feb 2012
Posts: 3
Location: London
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| Posted: Sun Feb 19, 2012 2:21 am Post subject: |
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LGM wrote:
| visualopsins wrote: |
| Remove the tripod mount to reveal a joint in the tube. The two parts unscrew to give access to the rear element, which iirc, can be removed with a lens spanner. I haven't removed a front element, but I think the name ring when removed does reveal the next steps. |
Great, that's just the information I was looking for, thanks.
| visualopsins wrote: |
| Actually, the outer circumference of the front element IS used even with crop sensor. Only stopping down cuts off light from front element circumference. |
I didn't know that. I'll definitely have to have a go at cleaning the front element then - it's pretty bad around the circumference. |
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