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eggplant
![Level 3 Level 3](rating3.gif) Joined: 27 May 2020 Posts: 517
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Posted: Sun Jan 16, 2022 5:36 pm Post subject: Soligor Universal Automatic T-4 Lens system (70s) |
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eggplant wrote:
FULL ALBUM https://flic.kr/s/aHBqjzyQbD
Soligor Universal Automatic T-4 Lens system front by - -, on Flickr
Soligor Universal Automatic T-4 Lens system reverse by - -, on Flickr
Sample lens diagram:
Crop:
I did a look on Google Books to date this, and found varying dates of 1973-1975. I leave it up to better experts to find the exact date.
Notes on process
This wasn't a perfectly flat document, but the end results are all within a similar quality band. Or, they're decently sharp over most of the details.
Uneven illumination can be a product of the document not being perfectly flat when using one light source from one direction, which I was.
I'm still not perfectly satisfied with my setup, which is why I've held off from doing anything major like the second Olympus lens brochure.
Lighting has been solved by an overhead projector which belches out nice, even light over a wide area. 1-2 of the scans in the album are abit uneven (e.g. 35mm f2. , but not as bad as it was before.
There's abit of slop in my bellows to remove.
Most importantly I need a book stand to do glued books, or books I otherwise don't want to disassemble (which is all of them). I have a very detailed Tokina book from circa 1980 which sheds light on a bunch of lenses you've never seen diagrams of.
I went through and got images of all the diagrams, but cocked it up with an uneven lighting setup, and using scanner glass to flatten the book- didn't work towards the end where the book would not flatten. So stuff like this is on the way, soon: https://i.postimg.cc/fWVb1tbc/DSC2552.jpg
You can read the settings I used (resizing/compression) in the album description.
I don't have a powerful scanner, just a USB Canoscan LiDE 120. You just need to play around with compression settings and resizes. |
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eggplant
![Level 3 Level 3](rating3.gif) Joined: 27 May 2020 Posts: 517
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Posted: Sun Jan 16, 2022 6:21 pm Post subject: |
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eggplant wrote:
Commentary
First time I've seen the 21mm f3.8 diagram, and cutaway aswell.
I think this has a completely different optical formula to the other 20/21mm f3.8 out there.
Consider-
Vivitar 21mm f/3.8 T-4, seen in this 1970 advertisement https://www.flickr.com/photos/136094828@N04/41313838390/:
(Kino/Kiron) Vivitar 20mm f3.8, 1969 or 1971, seen in this repair manual https://learncamerarepair.com/downloads/pdf/Vivitar-20mm-f38-Parts.pdf:
The Soligor T4 21mm f3.8:
So it appears there's variation among these lenses. There's a good chance the Vivitar seen in the advertisement is just a slightly differently drawn Soligor. But the Kiron one is totally different.
Also, it's interesting to see the Sonnar/Ernostar design give way to a telephoto one after 250mm. |
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kansalliskala
![Level 4 Level 4](rating4.gif) Joined: 19 Jul 2007 Posts: 5036 Location: Southern Finland countryside
Expire: 2016-12-30
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Posted: Mon Jan 17, 2022 8:22 am Post subject: |
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kansalliskala wrote:
The T4 system looks like very easy to break? _________________ MF: Kodak DCS SLR/c; Samsung NX10; OM-10; Canon T50
Zuiko 28/3.5, Distagon 35/2.8; Yashica ML 50/2;
Zuiko 50/1.4; S-M-C 120/2.8; Zuiko 135/3.5; 200/5;
Tamron AD1 135/2.8, Soligor 180/3.5; Tamron AD1 300/5.6
Tamron zooms: 01A, Z-210
Yashicaflex C; Київ 4 + Юпитер 8, 11; Polaroid 100; Olympus XA; Yashica T3
Museum stuff: Certo-Phot; Tele-Edixon 135; Polaris 90-190; Asahi Bellows; Ixus IIs
Projects: Agfa Isolette III (no shutter), Canon AE-1D (no sensor),
Nikon D80 (dead), The "Peace Camera"
AF: Canon, Tokina, Sigma Video: JVC GZ-MG275E |
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55
![Level 3 Level 3](rating3.gif) Joined: 13 May 2013 Posts: 710 Location: U.S.
Expire: 2022-06-15
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Posted: Sat Apr 02, 2022 5:11 am Post subject: Re: Soligor Universal Automatic T-4 Lens system (70s) |
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55 wrote:
Thanks for the thorough documentation, eggplant.
eggplant wrote: |
. . .
I have a very detailed Tokina book from circa 1980 which sheds light on a bunch of lenses you've never seen diagrams of. |
That sounds interesting. |
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55
![Level 3 Level 3](rating3.gif) Joined: 13 May 2013 Posts: 710 Location: U.S.
Expire: 2022-06-15
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Posted: Sat Apr 02, 2022 5:11 am Post subject: |
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55 wrote:
kansalliskala wrote: |
The T4 system looks like very easy to break? |
Maybe so? I haven't used my Vivitar T4 135mm lens enough to know for sure.
But both my 135 and M42 mount adapter seem solidly built. And as long as the mounting instructions are followed, I'd think there should be little chance of damage. |
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