Topic: Takumar S-M-C 200mm F4 repair/service assistance please!

This is my first post, and I just want to start of by saying Hi all, what a great forum! It's great to be in company with many other MF addicts!

I need to service the aperture blades on my Takumar S-M-C 200/4. They are stuck wide open, and turning the aperture ring (whether in Manual or Auto mode) has no affect on he blades. 

Should I be attacking this from the front end or the rear?

I can unscrew the front element without problems, but can

EOS 350D - MF:  CZJ (MC): Sonnar 200/2.8, MC S 135/3.5, Flektogon 35/2.4, Tessar 50/2.8. Asahi Pentax: Takumar Super-Multi-Coated: 200/4, 135/3.5. 50/1.4, 35/3.5, 28/3.5. Pentacon: 50/1.8, 29/2.8. Helios: 40-2. Jupiter-11A. Tair-11A. Nikkor: 105/2.5 28/2.8, 35/2.8. Tamron: 70-210 F3.5/4, 70-210 F3.5. Vivitar Series 1: (V2) 70-210 3.5. CZ Jenazoom II 70-210 2.8/4. AF: Tamron: 28-75mm F/2.8 XR DI.

Re: Takumar S-M-C 200mm F4 repair/service assistance please!

I think these lens (135, 150, 200) all needs to be attacked from the front. With the name ring off, you will see between the outer and inner barrel that the vase is held inside by 3 screws. These detach the outer barrel and let you continue to take the lens apart...

Canon 5DII and a few lens -- Tachihara 8x10. Chamonix 45N-1, Crown Graphic 4x5. Moskva, Zeiss Super Ikonta C
Bronica S2A, Agfa Super Isolette, Iskra, Rolleiflex. Leica M2, Bessa R, Zorki 1,3,3M and a few more...

Re: Takumar S-M-C 200mm F4 repair/service assistance please!

Thanks for responding Buze. I believe you are right with regards to the S-M-C 28mm to 135mm Takumars (don't know about the 150mm), however, the 200mm F4 S-M-C Takumars are different. The main front lens easily screws off from the main body.

http://www.softspotfurnishing.com/photography%20images/Takumar-SMC-200mm-F4.gif
http://www.softspotfurnishing.com/photography%20images/Takumar-SMC-200mm-F4-2.gif

Anyway, does anyone know what I should be doing (or not be doing) next?

Many thanks!

Last edited by The Maverick (2006-12-03 15:02:58)

EOS 350D - MF:  CZJ (MC): Sonnar 200/2.8, MC S 135/3.5, Flektogon 35/2.4, Tessar 50/2.8. Asahi Pentax: Takumar Super-Multi-Coated: 200/4, 135/3.5. 50/1.4, 35/3.5, 28/3.5. Pentacon: 50/1.8, 29/2.8. Helios: 40-2. Jupiter-11A. Tair-11A. Nikkor: 105/2.5 28/2.8, 35/2.8. Tamron: 70-210 F3.5/4, 70-210 F3.5. Vivitar Series 1: (V2) 70-210 3.5. CZ Jenazoom II 70-210 2.8/4. AF: Tamron: 28-75mm F/2.8 XR DI.

Re: Takumar S-M-C 200mm F4 repair/service assistance please!

I did one of those recently.
I'm pretty sure the first thing to remove is the focus grip itself.It should have three screws around it's middle circumference (?)
*Be sure to focus closest (so the lens is at it's longest physically) before lossening the focus grip -this will give you room to move .
Once the focus grip is loose ,slide it forward and you'll see some more screws hiding underneath .I think these are for the focus distance scale ring .Loosen these and slide it forward and under THAT you should find the three main screws for the rear section.

Take the rear section off and make sure all the levers are actuating properly.I'm reasonably confident this solves everything.
I can't remember if i managed to take mine apart far enough to remove the aperture assy itself.I vaguely recall it was too difficult to get to.

When reassembling you'll find the focus grip is difficult to get exactly straight-it's abit of a painfull fiddly design sad

Currently: EOS 400d, EFs18-55IS, Homemade super macro lens,Pentax K 50/1:1.2 , Canon FD85/1:1.2 (converted to EOS mount), Tamron 500/8 mirror, Canon FD500/4.5L (converted to EOS mount)

Re: Takumar S-M-C 200mm F4 repair/service assistance please!

Hi Ron, Thank you very much for responding!

OK, I've taken the three screws off the focusing ring. There are no screws hidden underneath the focusing ring, but I guess the next step is to take the three screws off the F Stop & Distance indicator ring.

http://www.softspotfurnishing.com/photography%20images/TakSMC200F4-Screw-locations.png

Unfortunately, this is where I have to temporarily stop, those screws are so damn small! mad  I'm gonna have to get some watch makers screwdrivers or similar.

Anyway, I'll keep you updated as and when I can.

Thanks again!

Hakan.

Last edited by The Maverick (2006-12-04 20:21:24)

EOS 350D - MF:  CZJ (MC): Sonnar 200/2.8, MC S 135/3.5, Flektogon 35/2.4, Tessar 50/2.8. Asahi Pentax: Takumar Super-Multi-Coated: 200/4, 135/3.5. 50/1.4, 35/3.5, 28/3.5. Pentacon: 50/1.8, 29/2.8. Helios: 40-2. Jupiter-11A. Tair-11A. Nikkor: 105/2.5 28/2.8, 35/2.8. Tamron: 70-210 F3.5/4, 70-210 F3.5. Vivitar Series 1: (V2) 70-210 3.5. CZ Jenazoom II 70-210 2.8/4. AF: Tamron: 28-75mm F/2.8 XR DI.

Re: Takumar S-M-C 200mm F4 repair/service assistance please!

Ah yes it's coming back now.
The screws for the rear section are under that F Stop & Distance indicator ring ,but the focus ring has to be undone first to give room for the  smaller ring to move forward.

I've found that any cheap $2 screwdriver kits have good useable flat type screwdrivers (allthough the star types they include are utterly useless sad )

Currently: EOS 400d, EFs18-55IS, Homemade super macro lens,Pentax K 50/1:1.2 , Canon FD85/1:1.2 (converted to EOS mount), Tamron 500/8 mirror, Canon FD500/4.5L (converted to EOS mount)

Re: Takumar S-M-C 200mm F4 repair/service assistance please!

Hi Ron,

Thanks again for the help.

OK, I really need you to delve in deep into that memory bank! smile

I have taken it all apart, but I can't see how to get the aperture mechanism off the front element! I can, and have been able to clean the rear of the aperture blades, but need to gain access so as I can clean the front side of the blades, and clean the glass whilst I'm at it.

Any assistance would very much be appreciated!

http://www.softspotfurnishing.com/photography%20images/takumar200element1.gif


Many thanks!

Hakan.

Last edited by The Maverick (2006-12-16 00:07:27)

EOS 350D - MF:  CZJ (MC): Sonnar 200/2.8, MC S 135/3.5, Flektogon 35/2.4, Tessar 50/2.8. Asahi Pentax: Takumar Super-Multi-Coated: 200/4, 135/3.5. 50/1.4, 35/3.5, 28/3.5. Pentacon: 50/1.8, 29/2.8. Helios: 40-2. Jupiter-11A. Tair-11A. Nikkor: 105/2.5 28/2.8, 35/2.8. Tamron: 70-210 F3.5/4, 70-210 F3.5. Vivitar Series 1: (V2) 70-210 3.5. CZ Jenazoom II 70-210 2.8/4. AF: Tamron: 28-75mm F/2.8 XR DI.

Re: Takumar S-M-C 200mm F4 repair/service assistance please!

Hey Mavrick,

Im a new member, found this forum in search of some answers. This place place is great! 
I know its been a long time ago but can you continue this thread?

I too am trying to clean the underside of the aperture blade of this exact lens (Super Takumar 200mm f4)

I just dont know how to get to the aperture blades, there seems to be no scews left to be undone.
Any help from anyone is appreciated.

Thanks in advance.
Tdo

Re: Takumar S-M-C 200mm F4 repair/service assistance please!

There might not be anything wrong with your lens!

The Super-Multi-Coated Takumars have a tiny pin on the base on the lens about 90 degrees from the aperture pin.  This tiny pin needs to be depressed in order for the aperture blades to release.  You can either screw on an adapter or press it with a fingernail.  (Note I am not talking about the aperture pin, but rather the very tiny pin on the actual base of the lens next to the screws.  I can take a picture if you don't see it on yours.)

This was to allow open-aperture metering on certain M42 Spotmatics.

(Whoops - didn't see how old this original post was!)

Last edited by carpents (2009-01-22 15:47:31)

Re: Takumar S-M-C 200mm F4 repair/service assistance please!

carpents wrote:

There might not be anything wrong with your lens!

Yes, check what Carpents said.

Meanwhile, if the aperture blades are really stuck, you can try to go in by the back, but that way you can only clean the back of the blades, with everything in place.

To really clean everything (blade by blade), you must go in from the front of the lens. Mine (did it about a month ago) was a real pain to disassemble.

You can start by taking the front barrel out: just hold it and twist (not sure if to do this you don't have to release the focus ring first).

If I remember correctly, then you have to unscrew the second group of glass.

Then you have to take three "micro" screws out, to release the aperture assembly, but there is a large ring that's about 5 mm above those screws (hence you can't unscrew them), so first you have to take that off. This ring is screwed to the barrel at the end opposite to the aperture assembly.

In my case, that piece was screwed in so tight I just couldn't remove it mad

I had to put that thin lubricant/anti-stuck/anti-rust in the threads, little by little, and leave it to sink in about 3 or 4 days, before it came off!

After that, you can remove those 3 "micro" screws, and the whole aperture assembly just slides off the barrel.


One last pointer: be VERY careful with the little shaft that sticks out of the aperture assembly and makes it open/close. It's kinda fragile (yes, I broke mine off, and it was a PAIN to fix it - DON'T DO IT! wink).

Hope this helps.

Nikon: D7000; F2; F4; FA. RMC Tokina 17/3,5; Ensinor 24/2,8 Macro; Nikkor: S.C. 50/1,4; AI-s 28/2,8; Micro 55/2,8; 80-200/4; S. E: 35/2,5; 100/2,8; Viv. S. 1 105/2,5 Macro (Kiron); MC Rokkor PG 58/1,2; Canon FD 300/4; Pentacon 135/2,8.
Pentax: K20D; CZJ Flek 20/4; SMC Pentax: A 28/2,8; 50/1,7; M 50/1,4; Tak. 50/1,4; Tamron Adall 2: SP 90/2,5 Macro; SP 60-300; 35-70/3,5 CF; .
And some others...

Re: Takumar S-M-C 200mm F4 repair/service assistance please!

Carpents: I hope I knew that before I opened this lens up.  Now, after putting it back together it doesnt seem to work as well, and theres a boat load of dust inside.

This is gonna go to the bucket of parts.

Thanks for your help anyway
Glimavitor, thank you too.

Re: Takumar S-M-C 200mm F4 repair/service assistance please!

Hey, don't give up yet. Keep watching this forum.

One of these days, as soon as I can, I'll post my "repair odyssey", with pictures (been meaning to do that for a whyle roll). Maybe then you realyse what's wrong with yours wink.

Nikon: D7000; F2; F4; FA. RMC Tokina 17/3,5; Ensinor 24/2,8 Macro; Nikkor: S.C. 50/1,4; AI-s 28/2,8; Micro 55/2,8; 80-200/4; S. E: 35/2,5; 100/2,8; Viv. S. 1 105/2,5 Macro (Kiron); MC Rokkor PG 58/1,2; Canon FD 300/4; Pentacon 135/2,8.
Pentax: K20D; CZJ Flek 20/4; SMC Pentax: A 28/2,8; 50/1,7; M 50/1,4; Tak. 50/1,4; Tamron Adall 2: SP 90/2,5 Macro; SP 60-300; 35-70/3,5 CF; .
And some others...