SMC Takumar 135 f/2.5

kopimorning · Joined: 23 May 2010 Posts: 97 Location: Jakarta-Bali

This is my first post.

I recently bought this lens for less than US$100.

Mine is 43802 variant. People said that 43812 variant is better one. Anyone posted a photo taken by 43812 variant will be highly appreciated ..... Smile

Mounted to my D40 so I need m42 to Nikon adapter. Focus range is approximately between 1.5 meters to 20 meters. Can't get infinity focus.

Lens test, focus range

No crop, image size reduced to 25% from original size

Cropped, 100% of image size

Lens infinity focus test
No crop, image size reduced to 25% from original size

Cropped, 100% of image size

Spotmatic · Joined: 18 Aug 2008 Posts: 4045 Location: Netherlands

kopimorning · Joined: 23 May 2010 Posts: 97 Location: Jakarta-Bali

Thanks !

But I think I've posted on wrong room

Could somebody please move this post to

Manual Focus Lenses Forum Index -> Manual Focus Lenses

CarbonR · Posted: Sun May 23, 2010 7:17 am Post subject:

Here is a comparison between the two lenses :
http://emmanuel.correia.free.fr/index.php?option=com_content&view=article&id=17:super-multi-coated-takumar-135-f-25-m42-v2&catid=2:montures-m42&Itemid=19

karabud · Joined: 11 Apr 2009 Posts: 843 Location: Lodz

Antoher comparision - but with Takumar (BAYONET) 135/2.5

http://tomekz.waw.pl/Test135/index.htm

kopimorning · Joined: 23 May 2010 Posts: 97 Location: Jakarta-Bali

kopimorning · Joined: 23 May 2010 Posts: 97 Location: Jakarta-Bali

Another lens test. I love this lens more and more, despite that it's a V1

Shoot at f/2.5 on D40. I wonder how the result would be on a full frame body.

Full image

Cropped 100%

Big Dawg · Joined: 28 Jan 2009 Posts: 2530 Location: Thach Alabama

Nice lens. A true keeper.

visualopsins · Expire: 2025-04-11

[edit]These are NOT sonnar designs![/edit]

The lens is an Asahi Opt. Co., Japan, Sonnar!

Super-Takumar 1:2.5/135 43801 -- Sonnar, 5 elements 4 groups
Super-Multi-Coated Takumar 1:2.5/135 43802 -- Sonnar, 5/4
Super-Multi-Coated Takumar 1:2.5/135 43812 -- 6/6

Some other M42 Asahi Opt. Co., Japan, with sonnar optical design.:

Super-Multi-Coated Takumar 1:2.5/135 5/4 43802
Super-Takumar 1:3.5/135 4/4 43541
Super-Multi-Coated Takumar 1:3.5/135 4/4 43542
Super-Multi-Coated Takumar 1:2.8/120 5/4 43982
Super-Takumar 1:2.8/105 5/4 43501
Super-Multi-Coated Takumar 1:2.8/105 5/4 43502
Super-Multi-Coated Takumar 1:1.9/85 5/4
Super-Takumar 1:3.5/35 5/4 43571
Super-Multi-Coated Takumar 1:3.5/35 5/4 43572

1.9/85, 2.8/105, 2.8/120, 2.5/135, nice kit!
3.5/35, 3.5/135, inexpensive starter kit!

no-X · Posted: Sun Aug 22, 2010 2:33 pm Post subject:

Where did you get this info? The only two Takumar lenses, which are based on (enhanced) Sonnar formula are 58/2 and 83/1.9. All the 135mm Takumar lenses are Ernostars or significatnly modified Ernostars.

visualopsins · Expire: 2025-04-11

dude163 · Posted: Fri Sep 17, 2010 4:25 pm Post subject:

Visualopsins I sent you a PM

Smile

no-X · Posted: Fri Sep 17, 2010 8:35 pm Post subject:

visualopsins: I made a very quick drawing in mspaint:

line "0" shows basic triplet lens - two elemens in front group (positive, negative) and one positive element in rear group

line "1" shows two ways of evolution: "A" shows the simpliest possible Ernostar - triplet design, which was enhanced by adding separate optical element in front group; "B" shows simpliest possible Sonnar - one lens element is added too, but it is cemented to the central element

you can notice, that Sonnar (unlike Ernostar) has still only 3 lens groups - it's advantage is higher contrast (less air/glass surfaces), but less surfaces also mean less possibilities of optical corrections, so Sonnars of 4 elemens are typically slower than Ernostars of 4 elemens

examples of 1A Ernostar: Prakticar 50/2.4, Takumars 105/2.8 (auto/pre-set) and some 135/3.5, Pentax 135/2.8, Rolleinars f/2.8 (85, 105, 135), some f/2.8 short teles from Nikon etc.

examples of 1B Sonnar: CZJ Sonnar 135/4, 135/3.5, Jupiter-11 135/4, Jupiter-37 135/3.5, Jupiter-21 200/4, Meyer Telefogar 90/3.5

line "2" shows more enhanced design with other element added to the front group. "A" is again Ernostar, "B" is Sonnar. You can notice, that Sonnar has still only two groups in the front section (3 groups in total), so contrast is still pretty close to the original simple triplet

examples of 2A Ernostar: Meyer/Pentacon 100/2.8, 135/2.8, Nikkor 180/2.8, Komura 105/2.0, Fujinon 135/2.5, Leica Summarit-M 90/2.5

examples of 2B Sonnar: CZJ Sonnar 180/2.8, Jupiter-6 180/2.8, Isco 180/2.8, Nikkor-P 105/2.8

line "3" shows Sonnar with extended rear group... again, it still has only 3 optical groups in total, this design was used for fast lenses like Sonnar 50/2.0, Jupiter-8 50/2.0 and pre-war Sonnar 85/2.0

line "4" shows Sonnar with even more extended rear group (3 groups in total, still), e.g. pre-war Sonnar 50/1.5, post-war Sonnar 85/2.0, Jupiter-3 50/1.5, Jupiter-9 85/2.0, Nikkor-S 50/1.4 and 85/1.5, Canon Serenar 50/1.5

line "5" shows examples consisting of 5 elements, which are a bit different to examples in line "2"... these have cemented doublet in the rear group...

Ernostar of this type was used for Zeiss/Oberkochen "Sonnar" lenses like: 85/2.8, 90/2.8, 100/3.5 and 135/2.8. It was also used for many Asahi/Pentax lenses like Taks 85/1.8 (auto), 85/1.9, 105/2.8 (super/smc), 120/2.8, 135/3.5 (V1) etc.

Why the called it Sonnar though it was Ernostar? Well, it's related to some historical aspects. Ludwig Bertelle, who developed both formulas in pre-war time, found, that Sonnar is contrastier and transmits more light. So Sonnar design was preferred in the pre-war era. Once Zeiss invented optical coating, which solved contrast-related issues, they decided to prefer Ernostar design, which was cheaper to manufacture (less cemented elements) and offers more space for optical corrections. But Sonnar name was already so successful and popular, that they decided to keep it and use even for the new Ernostar-formula-based lenses like the T* 135/2.8.

All Jena Sonnar with the exception of 200/2.8 are typical old-styled Sonnars. All western Sonnars are based on Ernostar optical formula. All soviet Jupiter lenses were based on the typical Sonnar formula.

Some manufacturers continued in Sonnar's development, so you can found some very complex optical formulas, which very often splitted the rear optical group in two or three groups (e.g. the legendary Zunow 50/1.1, or Takumars 83/1.9 and 58/2.0, Fujinon 50/1.2, Canon 85/2.0 [1952]). But all of them - like all real Sonnars - have only two front optical groups. Many of these Sonnars with splitted rear group also shows signs of gauss-type design.

visualopsins · Expire: 2025-04-11

no-X! Thank you so much! Your explanation is very clear and easy to understand. A real time-saver too, as the information is not so easy to find; I did spend a few hours reading other sources, but that did not help any with this. Very Happy

iM42 · Joined: 19 Sep 2010 Posts: 2

That's a beauty that you got Smile

!

Love this lens. And thank's a lot for the sample pictures.