| View previous topic :: View next topic |
| Author |
Message |
Kathmandu
Joined: 09 Dec 2009
Posts: 1479
Location: (Kathmandu,Nepal. Currently)Pacific Northwest, USA
Expire: 2012-04-08
|
 Posted: Tue Aug 31, 2010 4:17 am Post subject: Enlarger lenses? |
 |
|
Kathmandu wrote:
I picked these up at an antique shop-they caught my eyes,they looked dusty ,and I got them for a song and dance-maybe some one here has some insight on these.
Ilex Optical Co.'s (shutter and diaphragm maker?) and Carl Zeiss Jena Tessar f6.3 300mm lens that still has some cleaning left to do. I need to clean the second element as I have not been able to open that part yet.The other elements cleaned up good(gentle clean). This looks like a contraption from a Jules Verne movie-and weighs about 3 or 4 lbs. The diameter of the outer edge is approx 5 inches.
(With a 12 oz bottle for comparison purposes.The visible specks are in the front ofthe second element,and are cleanable.)
The second one says Gundlach-Manhattan Optical Co. The glass on this has good access for cleaning-the retaining rings still work smoothly.This weighs a little more than a pound.
For now I'd like to clean these as best possible without damaging anything and possibly explore uses for it, in the future. I would love to hear suggestions/possibilities. I realize I may not have many options because of their weight .
Best regards
Last edited by Kathmandu on Tue Aug 31, 2010 7:06 am; edited 1 time in total |
|
| Back to top |
|
 |
luisalegria
Joined: 07 Mar 2008
Posts: 6602
Location: San Francisco, USA
Expire: 2018-01-18
|
| Posted: Tue Aug 31, 2010 6:09 am Post subject: |
|
|
luisalegria wrote:
The first is a very nice find indeed. A big Tessar on an Ilex #4
Thats a view camera lens, a "normal" for an 8x10 format, or a portrait/long lens for a 4x5.
Both are good, simple sturdy items and should be very easy to clean and put in working order.
The second is probably a projection lens.
_________________
I like Pentax DSLR's, Exaktas, M42 bodies of all kinds, strange and cheap Japanese lenses, and am dabbling in medium format/Speed Graphic work. |
|
| Back to top |
|
|
Kathmandu
Joined: 09 Dec 2009
Posts: 1479
Location: (Kathmandu,Nepal. Currently)Pacific Northwest, USA
Expire: 2012-04-08
|
| Posted: Tue Aug 31, 2010 4:12 pm Post subject: |
|
|
Kathmandu wrote:
luisalegria:
Thank you for your informative reply-I appreciate it. How does the big Tessar front cell come apart-I need to gt between the elements there to clean .  .
Cheers |
|
| Back to top |
|
|
visualopsins
Joined: 05 Mar 2009
Posts: 11063
Location: California
Expire: 2025-04-11
|
| Posted: Tue Aug 31, 2010 4:35 pm Post subject: |
|
|
visualopsins wrote:
Wow what a find! I think the two-part lens simply screws into the shutter, one part in front, one in back. See http://www.skgrimes.com/ilex/index.htm
The sheer size makes me wonder if the image circle is larger than only 8x10.
_________________
☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ 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)
|
|
| Back to top |
|
|
luisalegria
Joined: 07 Mar 2008
Posts: 6602
Location: San Francisco, USA
Expire: 2018-01-18
|
| Posted: Tue Aug 31, 2010 6:29 pm Post subject: |
|
|
luisalegria wrote:
The usual construction for these Tessars was such that they could easily come apart. I haven't played with such a large one though, my biggest is just a 15cm.
You unscrew the front assembly from the shutter - it should just unscrew, though it might be tight. On the back of this assembly you should see a knurled ring; thats where you unscrew the rear element from the front.
The rear assembly is a one-piece cemented group so there should be no need to unscrew it from the shutter, to get at the inner surface just open the aperture and open the shutter (on the "T" setting"). You can also remove the thing from the shutter of course, it should also just unscrew.
This is an uncoated lens so it should be easy enough to clean with alcohol.
The Zeiss catalogs on Camera Eccentric show Zeiss recommended this lens for 8 1/2" x 6 1/2", but thats probably with very generous allowance for movements; they also recommend their 15cm for 4x5, but the usual practice was to use the 13.5cm Tessar for 4x5, so their estimates give a lot of leeway. It should certainly cover 8x10 for all purposes that don't involve twisting the camera like a pretzel. The image circle at small stops is stated as 16 1/2" diameter, so it should probably even cover 11x14 at f/16 or so.
_________________
I like Pentax DSLR's, Exaktas, M42 bodies of all kinds, strange and cheap Japanese lenses, and am dabbling in medium format/Speed Graphic work. |
|
| Back to top |
|
|
Kathmandu
Joined: 09 Dec 2009
Posts: 1479
Location: (Kathmandu,Nepal. Currently)Pacific Northwest, USA
Expire: 2012-04-08
|
| Posted: Wed Sep 01, 2010 1:22 am Post subject: |
|
|
Kathmandu wrote:
| visualopsins wrote: |
Wow what a find! I think the two-part lens simply screws into the shutter, one part in front, one in back. See http://www.skgrimes.com/ilex/index.htm
The sheer size makes me wonder if the image circle is larger than only 8x10. |
Thank you for the link -the front cell screws/unscrews in to the shutter very smoothly. I have not had to unscrew the back end.
| luisalegria wrote: |
This is an uncoated lens so it should be easy enough to clean with alcohol.
The Zeiss catalogs on Camera Eccentric show Zeiss recommended this lens for 8 1/2" x 6 1/2", but thats probably with very generous allowance for movements; they also recommend their 15cm for 4x5, but the usual practice was to use the 13.5cm Tessar for 4x5, so their estimates give a lot of leeway. It should certainly cover 8x10 for all purposes that don't involve twisting the camera like a pretzel. The image circle at small stops is stated as 16 1/2" diameter, so it should probably even cover 11x14 at f/16 or so. |
It cleans very well with my Tequila laden breath-just kidding . You are right -It cleans up well with alchohol and the vapor from ones breath.
Thank you for the link -Camera Eccentric has a lot of information. Right now my Focus is on getting the 2nd element of the front cell. I have added 2 images of the front cell -and where I am stuck.
For others reading this I don't mean to turn this into a long "equipment care/repair" post-I hope you understand.
These are looking at threads that screw into the front of the shutter,the element does not come out even after the retainer ring is out-could it be glued?:
 |
|
| Back to top |
|
|
luisalegria
Joined: 07 Mar 2008
Posts: 6602
Location: San Francisco, USA
Expire: 2018-01-18
|
| Posted: Wed Sep 01, 2010 3:07 am Post subject: |
|
|
luisalegria wrote:
Very annoying problem. Well, thats the vintage lens business for you.
I don't think there's any glue in there. The lens should fall out once you've removed the retaining ring. It is probably just a close fit, plus years of condensation/oxidation.
Some options -
1. Hold the cell in the center of your fist with the rear cell facing down, and pound your hand on the table a few times (don't pound the lens itself on the table !). That may shake it out.
2. If you have a toaster oven, put the cell in there to warm it up (expands the metal) and try it again. No temperature shocks please !
3. See if you can unscrew the name ring for the front element with a rubber ring. If you can't remove the rear element, remove the front one.
_________________
I like Pentax DSLR's, Exaktas, M42 bodies of all kinds, strange and cheap Japanese lenses, and am dabbling in medium format/Speed Graphic work. |
|
| Back to top |
|
|
Kathmandu
Joined: 09 Dec 2009
Posts: 1479
Location: (Kathmandu,Nepal. Currently)Pacific Northwest, USA
Expire: 2012-04-08
|
| Posted: Wed Sep 01, 2010 4:55 am Post subject: |
|
|
Kathmandu wrote:
The element came out with gentle prying with a soft tipped tooth pick, and moving around slowly until I could hold it and pull it out -I had to gently twist it out anticlockwise-keeping gravity on my side. The element is pretty thick-and I'm now in a position to clean it. Thanks again for sharing your experience and knowledge. |
|
| Back to top |
|
|
martinsmith99
Joined: 31 Aug 2008
Posts: 6950
Location: S Glos, UK
Expire: 2013-11-18
|
| Posted: Wed Sep 01, 2010 6:06 am Post subject: |
|
|
martinsmith99 wrote:
Enlarger lenses are great for flower pics; and always cirular bokeh. Now go take some shot with them and post samples! 
_________________
Casual attendance these days |
|
| Back to top |
|
|
Kathmandu
Joined: 09 Dec 2009
Posts: 1479
Location: (Kathmandu,Nepal. Currently)Pacific Northwest, USA
Expire: 2012-04-08
|
| Posted: Wed Sep 01, 2010 6:32 am Post subject: |
|
|
Kathmandu wrote:
martinsmith99:
I am looking forward to taking some flower shots.Its a little late in the night for that right now:D , but I will in time ; and I'll def. post some images
Cheers |
|
| Back to top |
|
|
Kathmandu
Joined: 09 Dec 2009
Posts: 1479
Location: (Kathmandu,Nepal. Currently)Pacific Northwest, USA
Expire: 2012-04-08
|
| Posted: Thu Sep 02, 2010 1:08 am Post subject: |
|
|
Kathmandu wrote:
After a cleaning:
 |
|
| Back to top |
|
|
luisalegria
Joined: 07 Mar 2008
Posts: 6602
Location: San Francisco, USA
Expire: 2018-01-18
|
| Posted: Thu Sep 02, 2010 3:01 am Post subject: |
|
|
luisalegria wrote:
Nice !
How's the shutter ?
_________________
I like Pentax DSLR's, Exaktas, M42 bodies of all kinds, strange and cheap Japanese lenses, and am dabbling in medium format/Speed Graphic work. |
|
| Back to top |
|
|
Kathmandu
Joined: 09 Dec 2009
Posts: 1479
Location: (Kathmandu,Nepal. Currently)Pacific Northwest, USA
Expire: 2012-04-08
|
| Posted: Thu Sep 02, 2010 3:36 am Post subject: |
|
|
Kathmandu wrote:
The shutter doesn't work at this time. It clicks and snaps but no aperture action-I have not looked inside yet- I'd like to open it up ,when I get some time -and look inside to see the mechanics.
Thanks |
|
| Back to top |
|
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
|
Search
Memberlist
Register
Profile
Log in to check your private messages
Log in
