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no-X
Joined: 19 Jul 2008
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Location: Budejky, Czech Republic
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 Posted: Mon Jan 11, 2010 11:04 am Post subject: |
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no-X wrote:
This scheme looks a bit weird. It looks like 8/4, but it should be probably 5/4(?)
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aoleg
Joined: 22 Feb 2008
Posts: 1389
Location: Berlin, DE
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| Posted: Mon Jan 11, 2010 11:15 am Post subject: |
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aoleg wrote:
| no-X wrote: |
| This scheme looks a bit weird. It looks like 8/4, but it should be probably 5/4(?) |
It's just a weird way to draw an optical scheme. I edited it to highlight the actual glass elements.
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ludoo
Joined: 18 Sep 2009
Posts: 1397
Location: Milan, Italy
Expire: 2011-12-05
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| Posted: Mon Jan 11, 2010 11:22 am Post subject: |
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ludoo wrote:
It would be interesting to also include fixed-lens cameras, a comparison between the fl Ultron, Solagon, Xenon etc. |
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Spotmatic
Joined: 18 Aug 2008
Posts: 4045
Location: Netherlands
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| Posted: Mon Jan 11, 2010 11:31 am Post subject: |
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Spotmatic wrote:
Also, where can I find the Voigtlander 50mm f/2 Septon? (http://www.taunusreiter.de/Cameras/Bessa_RF_histo.html)
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My fast 80s: Asahi-Kogaku Takumar 83mm f/1.9 - Super-Takumar 85mm f/1.9 - FA 77mm f/1.8 Limited - Cyclop 85/1.5 (Helios-40 innards) - Komura 80mm f/1.8 - Meyer Görlitz Primoplan 7,5cm 1:1.9 - Carl Zeiss Jena 80mm f/1.8 Pancolar - Canon 85mm f/1.8 S.S.C. - Canon 85mm f/1.2 S.S.C. Aspherical |
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lantan
Joined: 18 Jan 2010
Posts: 3
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| Posted: Mon Jan 18, 2010 1:56 am Post subject: |
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lantan wrote:
it would be nice to see in the list also Olympus Zuiko lenses, and Minolta Manual Focus lenses... here is the source for Minolta's:
www.rokkor-x.narod.ru/user_manuals/rokkors_schems/ |
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rawhead
Joined: 09 Feb 2009
Posts: 1525
Location: Boston, MA
Expire: 2014-04-29
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| Posted: Mon Jan 18, 2010 2:05 am Post subject: |
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rawhead wrote:
I guess my beloved Zuiko 50/1.2 is a 7e/6g double gauss?
http://www.mir.com.my/rb/photography/hardwares/classics/olympusom1n2/shared/zuiko/htmls/50mm1.htm
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lantan
Joined: 18 Jan 2010
Posts: 3
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| Posted: Mon Jan 18, 2010 2:08 am Post subject: |
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lantan wrote:
...some Exakta mount lenses schemes (Quinon,Westagon,Westanar,Quinar etc.) can be found in the "Exakta Unlimited" PDF manual here:
www.butkus.org/chinon/exakta/exakta_unlimited/exakta_unlimited.htm |
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lantan
Joined: 18 Jan 2010
Posts: 3
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| Posted: Mon Jan 18, 2010 2:20 am Post subject: |
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lantan wrote:
Pentax Super Takumar 50/1.4 (early version, 8 elements, without thorium glass):
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taunusreiter
Joined: 20 Mar 2007
Posts: 127
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| Posted: Wed Jan 20, 2010 2:45 pm Post subject: |
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taunusreiter wrote:
The first one is an enhanced triplet (added last lens).
The last one is mostly referenced as UNILITE type, a simplified Planar type.
 http://www.taunusreiter.de/Cameras/Wrayflex.html
The lens design overview is an excellent idea!
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Last edited by taunusreiter on Thu Jan 21, 2010 7:37 am; edited 3 times in total |
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taunusreiter
Joined: 20 Mar 2007
Posts: 127
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| Posted: Thu Jan 21, 2010 6:59 am Post subject: |
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taunusreiter wrote:
| Relayer wrote: |
| its not UNILITE type. UNILITE have design 1-2 | 1-1, but Fujinon have 1-1 | 2-1 |
Oh, just the other way around.
We see the same at the Zeiss 100/2.8 Planar (MF; 6x9)
Is that lens good at f/1.6? A speed of f/2 is a bit critical with 5 element lenses, and f/1.6 sounds adventuresome.
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no-X
Joined: 19 Jul 2008
Posts: 2495
Location: Budejky, Czech Republic
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| Posted: Thu Jan 21, 2010 11:36 am Post subject: |
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no-X wrote:
| lantan wrote: |
Pentax Super Takumar 50/1.4 (early version, 8 elements, without thorium glass):
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The lens scheme is already present in my current list of hybrid designs, but I just noticed I forgot to publish the last version of it... Thanks anyway 
Relayer: My target was to introduce just a few examples for every lens design. Not to include every single lens ever done... but I understand
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no-X
Joined: 19 Jul 2008
Posts: 2495
Location: Budejky, Czech Republic
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| Posted: Thu Jan 21, 2010 12:37 pm Post subject: |
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no-X wrote:
| taunusreiter wrote: |
| Is that lens good at f/1.6? A speed of f/2 is a bit critical with 5 element lenses, and f/1.6 sounds adventuresome. |
I'd try, but I'm short of money at the moment. One 55/1.6 is available on ebay - and not too expensive:
Click here to see on Ebay
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no-X
Joined: 19 Jul 2008
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Location: Budejky, Czech Republic
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| Posted: Thu Jan 21, 2010 10:23 pm Post subject: |
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no-X wrote:
Relayer: Done 
+ added some other designs: fujinon/unar, elmar, orthoscope, tair, hektor, telyt...
list of triplets, v.5:
PDF: high quality / optimized
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Selenium_27
Joined: 12 Apr 2009
Posts: 118
Location: Strasbourg, France
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| Posted: Mon Jan 25, 2010 5:31 pm Post subject: |
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Selenium_27 wrote:
First of all thanks for that imprssive informations collectrion.
I just found a picture, not from me, but from a selling siteof a truncated planar (1.8 50) for rollei. I thought it were relevant to post it there.
The seller argued it has been used in photokina. (but he ask a little bit too much, just for satisfying my curiosity : 300€)
I post here this for comparaison, taken from no-X file :
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no-X
Joined: 19 Jul 2008
Posts: 2495
Location: Budejky, Czech Republic
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| Posted: Mon Jan 25, 2010 5:57 pm Post subject: |
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no-X wrote:
Selenium_27: The lens shown on your picture is the later Glatzels version (front element is convexo-concave). I used the earlier Tronniers version as example (front element concavo-convex). But it's really nice demonstration, thanks
Anyway, I have one correction of a mistake in my list of triplets - related to Meyer Helioplan 40/4.5.
In the beginning of my research I found, that this lens is based on simple triplet. Later, when I bought one, I discovered, that the lens definately consists of 4 elements (not 3), so I pressumed, that the lens is Ernostar design. But now I discovered, that it isn't.
I prepared a drawing to make the difference visible:
The front surface of 2nd element isn't convex, but concave. That means, that the lens isn't typical Ernostar design. Honestly, I have no idea how to clasify it. It is a bit similar to simple 4-element double-gauss lens, but DG lens consists of postive and negative meniscus lenses - these are just simple biconvex and biconcave. On the other hand, now I understand, why Meyer called this design "double-anastigmat". It's a fully symetrical lens...
I'll correct this in the next version of our list.
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francotirador
Joined: 17 Sep 2009
Posts: 894
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| Posted: Thu Feb 04, 2010 4:08 am Post subject: |
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francotirador wrote:
The Jupiter 21M - 200mm f4. That design is?
Thanks to all.
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no-X
Joined: 19 Jul 2008
Posts: 2495
Location: Budejky, Czech Republic
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| Posted: Thu Feb 04, 2010 7:50 am Post subject: |
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no-X wrote:
Simplified Sonnar like Sonnars/Jupiters 135/3.5 + 135/4 (1-2 | 1). It's already present in next version I'm preparing
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francotirador
Joined: 17 Sep 2009
Posts: 894
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| Posted: Thu Feb 04, 2010 2:00 pm Post subject: |
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francotirador wrote:
| no-X wrote: |
| Simplified Sonnar like Sonnars/Jupiters 135/3.5 + 135/4 (1-2 | 1). It's already present in next version I'm preparing |
Deservedly, the pictures of one and other are so similar
Many Thanks.
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no-X
Joined: 19 Jul 2008
Posts: 2495
Location: Budejky, Czech Republic
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| Posted: Wed Feb 10, 2010 5:02 pm Post subject: |
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no-X wrote:
I finaly found exact optical diagram of Primoplan 75/1.9. Maybe somebody sought it too...
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cooltouch
Joined: 15 Jan 2009
Posts: 9097
Location: Houston, Texas
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| Posted: Wed Feb 10, 2010 6:32 pm Post subject: |
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cooltouch wrote:
| aoleg wrote: |
| cooltouch wrote: |
| I suppose I should mention this: I've recently been going through some of my old collections of photo-related publications, and I have some items that members here might find interesting. |
I have never seen an optical diagram to Micro Nikkor 105/2.8 (Ai-S). Do you have one? |
Sorry I didn't see this question before now. Yes, I have it. The 105mm f/2.8 Ai-S Micro-Nikkor from the 1985 edition of The Eyes of Nikon, p.152:
I just took a quick pic of the lens rather than scanning it. Good enough for this sort of thing, I guess.
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aoleg
Joined: 22 Feb 2008
Posts: 1389
Location: Berlin, DE
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| Posted: Sun Feb 21, 2010 7:44 am Post subject: |
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aoleg wrote:
| cooltouch wrote: |
Sorry I didn't see this question before now. Yes, I have it. The 105mm f/2.8 Ai-S Micro-Nikkor from the 1985 edition of The Eyes of Nikon, p.152:
I just took a quick pic of the lens rather than scanning it. Good enough for this sort of thing, I guess. |
MANY thanks! This is the first optical diagram of this lens I've ever seen anywhere! Do you want to send it to the guy supporting http://www.mir.com.my/rb/photography/photography.htm ? They don't have this diagram, and I'm pretty sure they'd love to!
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aoleg
Joined: 22 Feb 2008
Posts: 1389
Location: Berlin, DE
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| Posted: Sun Feb 21, 2010 7:49 am Post subject: |
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aoleg wrote:
Interestingly, Ai-S Micro Nikkor 105/2.8 is quite similar to the AF version - yet the MF lens is slightly more complex. Also, it strikes me how Nikon used the "Planar + 4-element TC" scheme to build a macro lens that is essentially similar to a 50mm lens used with a focusing teleconverter such as Vivitar 2x Macro Focusing TC.
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Guliver
Joined: 05 Mar 2010
Posts: 9
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| Posted: Fri Mar 05, 2010 7:49 pm Post subject: |
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Guliver wrote:
I am looking for a scheme for Prakticar PM 2.8/28mm Pentacon MC lens. Does anybody know where I could find it or maybe somebody even has it...Cheers |
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no-X
Joined: 19 Jul 2008
Posts: 2495
Location: Budejky, Czech Republic
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| Posted: Fri Mar 05, 2010 8:02 pm Post subject: |
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no-X wrote:
the same as Meyer/Pentacon 29/2.8:
http://www.praktica-users.com/lens/mlenses/morp2.8_29.html
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Guliver
Joined: 05 Mar 2010
Posts: 9
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| Posted: Fri Mar 05, 2010 10:20 pm Post subject: |
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Guliver wrote:
Thank you No-X! I took it apart and actually found that it slightly differs. For instance I've got only 6 pieces of glass regardless what it says on that site (7 elements and 7 groups). |
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