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Lens transplantations ...
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PostPosted: Sun May 25, 2008 10:42 pm    Post subject: Lens transplantations ... Reply with quote

I began folding's and enlarger lenses "surgery" in the early 70' with a Zeiss Novar 6,3/105 on a bellows . I did so with a dozen of lenses : Tessar 135/4,5 , Skopar 3,5/105, Apotar 105mm, T-22 Lubitel , Industar-23 /110mm , "noname anastigmat 105mm Lumière", meniscus from kodak boxes and "fex"( french plastic camera) , Zeiss Triotar 6,3/135 , a Lacour-Berthiot 6/100mm (stereo plate camera) . My preferred is the Lacour-Berthiot Eurygraphe (6 elements symmetrical) A very useful accessory : helicoïdal variable extension tube from Pentax .
Trioplan is very good, Skopar is prone to huge flare, T-22 is excellent ...

Meniscus in a "frankensteinized" industar-50 :



Zeiss Triotar :






And a result : kodak meniscus.







Lacour-Berthiot Eurygraphe 100mm f/6






And a picture :





This is a quite infinite domain to play within ...


PostPosted: Sun May 25, 2008 10:46 pm    Post subject: Reply with quote

Second lens is suprisingly good, doesn't seems that old than first one. Many thanks for sharing!


PostPosted: Sun May 25, 2008 10:52 pm    Post subject: Reply with quote

The Lacour Berthiot is over 100 years old (Before WW1). Yet , I was obliged to dismantle it completely to take away rust from diaph blades and to clean each element ... (6 independent) I found it on a flea market in a "wreck" state . Diaph re-assembly was hellish tricky . (12 blades , very small an thin) Saved ! and now 100% functionnal ...
This lens is relevant of symmetrical construction : If you dismount the rear or front group of three elements , you obtain a perfectly usable (iI didn't say "good", however ...) triplet of the double of focal length : 200 mm . But you divide the aperture by two : f/12 ...


PostPosted: Sun May 25, 2008 11:03 pm    Post subject: Reply with quote

Amazing result from this old lens!


PostPosted: Mon May 26, 2008 1:16 am    Post subject: Reply with quote

Wonderful! What cameras are you using these lenses with?

I've got an I-50 with damaged glass just screaming for a 50mm Meniscus lens!


PostPosted: Mon May 26, 2008 3:51 am    Post subject: Reply with quote

You have some exotic stuff here ! And I'm sure you have plenty more.

I started down this line of antique lenses, and I hope to have something nice to show soon.


PostPosted: Mon May 26, 2008 6:29 am    Post subject: Reply with quote

thanks Helios, that's a great post

Luis wrote:
And I'm sure you have plenty more

yes, don't hide your knowledge and your best model is perfect to evaluate a lens.
architecture and landscape can be nice even on a phone cam but portrait don't lie


PostPosted: Mon May 26, 2008 9:19 am    Post subject: Reply with quote

Hmmmm .... May be ... I have to scan boxes og negatives to do so ! I particularly like old west-germany lenses from isco,schneider, enna, schacht,astro-berlin.
Plastic Enna's are dirt cheap and surprisingly good ! I have the 28,35,135 (2,8, 3,5) the 240 and 300 all plastic mounts ! Poor design...They were sold at the end by quelle - revuenon and other brands - I'm waiting for a supplementary copy of the 135 , won 1 € on ebay !
I made portraits with almost 60 lenses , zoom , mid-wide , "normal" , tele under 200 (75,85,90,100,105,135,150) , and compact cameras such minox 35, Rollei 35se , Oly Xa (little marvel)
I'd like to create a picasa album . So I will do so !

Friend's portrait : Minox 35GT HP5 1/15s f/4 Indoor .



PostPosted: Mon May 26, 2008 10:17 am    Post subject: Reply with quote

Splendid, and I will plan that manufacture some old lens transplant


PostPosted: Mon May 26, 2008 2:50 pm    Post subject: Reply with quote

Helios
have you the enna 4,5/240?
What about this?
Comparing the 240 and the 300, are one best than the other?
Thank you.


PostPosted: Mon May 26, 2008 8:23 pm    Post subject: Reply with quote

I just finished to clean my 240 , and the 300 is not ready to shoot ! Internal elements are greasy (giving "hamilton +++" effect), because this lens was probably exposed to the sun heat and the grease of helicoïd evaporated , condensed on the internal surfaces. I cleaned a dozen of lenses for the same problem . The 240 is reputedly good , and it is known that some copies are excellent . I'll do some tests pics with the 240 in a couple of weeks , but I have not yet dismantled the 300 ...


PostPosted: Mon May 26, 2008 10:29 pm    Post subject: another lens on bellow Reply with quote

wollensak 165mm/4.5 on a lumix L1


PostPosted: Mon May 26, 2008 11:28 pm    Post subject: Reply with quote

Wollensak, Bausch & Lomb : I've no one . Nore british lenses like Dallmeyer , only a Taylor,Taylor & Hobson Cine Lens. These are dreamy !
This picture tends to proof 2 things : 1) old lenses are perfectly re-usable on Dslr's , 2) Sbaruche is a real artist ... Very Happy


PostPosted: Tue May 27, 2008 1:29 am    Post subject: old lenses Reply with quote

thanks helios another info to take into consideration these lens were created for BW when color films did not exist in today 's technology they are still made for BW

I will post more in the next couple of days including some photos taken with my helios 40
I have as well an outstanding enlarging angenieux lens 105/4.5

thanks

Keep showing your work with old lens let's try to open a separate folder

Sylvain


PostPosted: Tue May 27, 2008 2:29 am    Post subject: Re: old lenses Reply with quote

sbaruche wrote:
thanks helios another info to take into consideration these lens were created for BW when color films did not exist in today 's technology they are still made for BW

Practically all lenses designed during the last 120 years (or even more) are perfectly usable for color, e.g. a Tessar is a Tessar whether 100 years old or made to-day, the only difference is the lack of coating in older lenses. I've got 90 years old lenses which exhibit less CA than any of my more modern lenses except perhaps the 4/180 APO-Lanthar - and I'm not too sure even about that. Have a look e.g. at photos taken with a 90 years old Cooke triplet: http://galactinus.net/vilva/retro/eos350d_cooke3.html or photos taken with an even simpler and cheaper lens, an 85 years old Aldis Uno: http://galactinus.net/vilva/retro/nruno.html.

Here is a photo taken through a shop window with a slightly newer Cooke Aviar mounted on an EOS350D:



A full-size version is available at http://galactinus.net/vilva/retro/demo/av0099s.jpg, no contrast adjustments, very minimal sharpening. As far as I can see there is nothing wrong with the colors of a lens "made for BW".

Veijo


PostPosted: Thu May 29, 2008 5:46 pm    Post subject: cine mount lens on DSLR Reply with quote

I am planning to adapt c mount cine lens such as angenieux or Kinoptik of high quality on my 4/3 system Lumix L1 . (similar to olympus E330)
Which focal should I choose to be able to use the 4/3 sensor and keep infinity focus ?
I have a c mount M42 adapter so I can either put the lens directly on the Lumix bayonet or via a bellow
Most of the cine lens have a short ffp so shoud use a minum of a 70 mm

help and advices would be appreciated

Sylvain


PostPosted: Thu May 29, 2008 7:12 pm    Post subject: Reply with quote

I'm afraid it is not very easy , the c-mount register is .69" , 17,26mm. Usable in macro-photo and nothing else , except perhaps with telephoto lenses with no rear group , after shortening the mount , if it is possible.....
I made some macro trials with tth and angénieux C-mount lenses with poor results.Usable cine lenses are of 35mm movie cameras relevant (mitchell, arri,konvas.., etc ...)


PostPosted: Fri May 30, 2008 6:06 am    Post subject: Reply with quote

You guys are awesome


patrickh