New 6D and M42 lenses capability.

[Snodge]

My Helios 44-2 works fine with no mirror clearance issues on my 5D3. My 50mm Pentax f/1.4 I have a thin plastic shim to prevent it from hitting the mirror; it no longer focuses to infinity, but works fine with hyperfocussing.
I also have no problem with: Porst 35mm f/2.8, MIR-24 35mm f/2.0, Kaligor 135mm f/2.8, Sankyo Kohki Komura 135mm f/3.5 and my Zenit 16mm fisheye lens. I think the 28mm Pentax is fine, but I haven't tested that one on the 5D3.

 

[NorbR]

Just to add more confusion: I have a copy of that same lens (SMC Takumar 3.5/28) and the mirror *does* hang on my 6D. Not only that, but it does hang quite a bit, or in other words, it does take a fairly significant amount of rotating away from infinity to free the mirror.

And while I'm at it, I might as well add more info about other m42 lenses I have.

I found the following lenses to cause the mirror to hang on my 6D at infinity:
- SMC Takumar 3.5/28mm
- Super Takumar 3.5/35mm
- Carl Zeiss Jena Tessar 2.8/50mm

On the other hand, the following cause no hanging whatsoever:
- Meyer Optik Oreston 1.8/50mm
- Super Takumar 1.8/55mm
- Helios 44-2 2/58mm
- Super Takumar 1.9/85mm
- Avanar DC 2.8/135mm
- Tokina RMC 2.8/135mm (that one with CY mount, not m42)

 

[TWI by Dustin Abbott]

Just to add more confusion: I have a copy of that same lens (SMC Takumar 3.5/28) and the mirror *does* hang on my 6D. Not only that, but it does hang quite a bit, or in other words, it does take a fairly significant amount of rotating away from infinity to free the mirror.

And while I'm at it, I might as well add more info about other m42 lenses I have.

I found the following lenses to cause the mirror to hang on my 6D at infinity:
- SMC Takumar 3.5/28mm
- Super Takumar 3.5/35mm
- Carl Zeiss Jena Tessar 2.8/50mm

On the other hand, the following cause no hanging whatsoever:
- Meyer Optik Oreston 1.8/50mm
- Super Takumar 1.8/55mm
- Helios 44-2 2/58mm
- Super Takumar 1.9/85mm
- Avanar DC 2.8/135mm
- Tokina RMC 2.8/135mm (that one with CY mount, not m42)

It's almost absurd how much variation there is. I love my Helios 44-2, but it DOES hang at infinity for me with multiple adapters. Ditto for Super Tak or SMC Tak 50mm f/1.4, but I also have no issues with the SMC Tak 55mm f/1.8. Typically none of the 85mm+ focal lengths cause any issue. The Super Tak 35 is really bad on full frame, but I loved it when I shot crop and still like it on my EOS M.

 

[nghia3d]

Hello! I have tested SMC Takumar 28mm f3.5.It works fine.Super takumar 135mm f3.5 is same.Except Super Takumar 50mm f1.4 hang mirror on my canon 6d

SMC Takumar 28mm f3.5 by nghia3d, on Flickr

Super Takumar 135mm f3.5 by nghia3d, on Flickr

Super Takumar 50mm f1.4 by nghia3d, on Flickr

 

[Mouse Potato]

Hello. I ve never registered to this forum even if I read it very often. Now, I want your help.

I found the following prime lenses:

1) Helios 44m-4 58mm f/2 (ZENIT)
2) MIR 1B 37mm f/2.8

I have the 6D and I found some cheap adapters (m42 to EF) at ebay.

My questions are:

1) Is it possible to create a problem at the mount ring with those adapters?

2) What is the mirror hang at some focus distances? Is there any possibility to damage the mirror or something?

Thank you in advance!

 

[bigdaddy]

Hallo Mouse,

here is a site that might help you with your question.

http://www.panoramaplanet.de/comp/

Bigdaddy

 

[Sporgon]

Hello! I have tested SMC Takumar 28mm f3.5.It works fine.Super takumar 135mm f3.5 is same.Except Super Takumar 50mm f1.4 hang mirror on my canon 6d

SMC Takumar 28mm f3.5 by nghia3d, on Flickr

Super Takumar 135mm f3.5 by nghia3d, on Flickr

Super Takumar 50mm f1.4 by nghia3d, on Flickr

Hey ! I thought the Takumar 135 f/3.5 was my secret !

I don't use it very often but it gives me a good laugh. It's a tiny lens, and really quite good. People are quite prepared to buy an f4 24-105, or f4 70-200, yet virtually nobody wants an f3.5 135 prime lens nowadays.

It's about quarter the size of an EF 135 L. Canon slr lenses have got so BIG in the last twenty years - 40 pancake not withstanding.

Many thanks to Dustin for originally getting me interested in using Takumars on the EOS system. They are fabulous. In the days when I was a young lad and my father had his Pentax Spotmatic I had no idea how good the lenses were.

 

[Mouse Potato]

Hallo Mouse,

here is a site that might help you with your question.

http://www.panoramaplanet.de/comp/

Bigdaddy

Thank you for the fast response.

I read this site and I found that both lenses hit the mirror when focused to infinity. What does that mean? Theoriticaly they can cause damage to my camera's mirror. What can I do?

 

[NancyP]

You can't do a thing about mirror interference. Some SMC Taks do, some don't. Not worth wrecking your camera.

 

[Mouse Potato]

You can't do a thing about mirror interference. Some SMC Taks do, some don't. Not worth wrecking your camera.

I want to try them but it is surely pointless if there is a posibility to harm your ff cam. The only "solution" I can think of is by taking photos only via liveview. Or am I wrong?

 

[Snodge]

I have the MIR 1B and it is fine on my 5D3, so should also be fine on the 6D too. I also have a Helios 44-2 which is fine, I don't know if there is much difference between it and the other versions though...

 

[bigdaddy]

When I first got into looking a manual lenses, I was trying to find a Helios, and if I remember correctly, the 44-4 will not work in the 6D, which I also have.

The infinity Problem comes when trying to focus on far objects. The Mirror hangs and it can be damaged. The best thing to do is to get lenses that do not have this problem. There are a lot of good lenses out there. Another option is to look for a mod for your lens, some can work if you file off the back lip on the lens, although I do not advocate maiming these old lenses, but to each their own.

Bigdaddy

Hallo Mouse,

here is a site that might help you with your question.

http://www.panoramaplanet.de/comp/

Bigdaddy

Thank you for the fast response.

I read this site and I found that both lenses hit the mirror when focused to infinity. What does that mean? Theoriticaly they can cause damage to my camera's mirror. What can I do?

 

[StudentOfLight]

You can't do a thing about mirror interference. Some SMC Taks do, some don't. Not worth wrecking your camera.

I want to try them but it is surely pointless if there is a posibility to harm your ff cam. The only "solution" I can think of is by taking photos only via liveview. Or am I wrong?

Why not use a short extension tube. This moves the lens forward away from the mirror.

 

[Mouse Potato]

I have the MIR 1B and it is fine on my 5D3, so should also be fine on the 6D too. I also have a Helios 44-2 which is fine, I don't know if there is much difference between it and the other versions though...

Strange because as I can see at compatibility chart the MIR 1B hits the mirror at infinity. I am totally confused!

When I first got into looking a manual lenses, I was trying to find a Helios, and if I remember correctly, the 44-4 will not work in the 6D, which I also have.

The infinity Problem comes when trying to focus on far objects. The Mirror hangs and it can be damaged. The best thing to do is to get lenses that do not have this problem. There are a lot of good lenses out there. Another option is to look for a mod for your lens, some can work if you file off the back lip on the lens, although I do not advocate maiming these old lenses, but to each their own.

Bigdaddy

Hallo Mouse,

here is a site that might help you with your question.

http://www.panoramaplanet.de/comp/

Bigdaddy

Thank you for the fast response.

I read this site and I found that both lenses hit the mirror when focused to infinity. What does that mean? Theoriticaly they can cause damage to my camera's mirror. What can I do?

Thanks for the response, Bigdaddy!

 

[Mouse Potato]

You can't do a thing about mirror interference. Some SMC Taks do, some don't. Not worth wrecking your camera.

I want to try them but it is surely pointless if there is a posibility to harm your ff cam. The only "solution" I can think of is by taking photos only via liveview. Or am I wrong?

Why not use a short extension tube. This moves the lens forward away from the mirror.

Due to extra (and high) cost. Did you test it?

 

[StudentOfLight]

You can't do a thing about mirror interference. Some SMC Taks do, some don't. Not worth wrecking your camera.

I want to try them but it is surely pointless if there is a posibility to harm your ff cam. The only "solution" I can think of is by taking photos only via liveview. Or am I wrong?

Why not use a short extension tube. This moves the lens forward away from the mirror.

Due to extra (and high) cost. Did you test it?

No, I didn't test it. I merely asked out of interest. I should probably have phrase myself better.

Kenko extension tubes are really cheap compared to most other photographic equipment. Surely you must know at least one photographer friend who has a set of extension tubes. The 12mm extension tube might move the rear of the lens forward enough to provide clearance for the mirror movement, the only question is if you will have a useful focus distance. If you are shooting small subjects or macro then it might be an option worth considering.

As an example, with Kenko 12mm extension tube I am able to safely use the Canon EF-S 24mm f/2.8 STM on the 6D. The obvious side effect of the extension tube is that I lose the ability to focus at infinity.

 

[Sporgon]

You can't do a thing about mirror interference. Some SMC Taks do, some don't. Not worth wrecking your camera.

I want to try them but it is surely pointless if there is a posibility to harm your ff cam. The only "solution" I can think of is by taking photos only via liveview. Or am I wrong?

Why not use a short extension tube. This moves the lens forward away from the mirror.

Due to extra (and high) cost. Did you test it?

No, I didn't test it. I merely asked out of interest. I should probably have phrase myself better.

Kenko extension tubes are really cheap compared to most other photographic equipment. Surely you must know at least one photographer friend who has a set of extension tubes. The 12mm extension tube might move the rear of the lens forward enough to provide clearance for the mirror movement, the only question is if you will have a useful focus distance. If you are shooting small subjects or macro then it might be an option worth considering.

As an example, with Kenko 12mm extension tube I am able to safely use the Canon EF-S 24mm f/2.8 STM on the 6D. The obvious side effect of the extension tube is that I lose the ability to focus at infinity.

I'd have though you lose the ability to focus on virtually anything except close up don't you ?

 

[TWI by Dustin Abbott]

I have the MIR 1B and it is fine on my 5D3, so should also be fine on the 6D too. I also have a Helios 44-2 which is fine, I don't know if there is much difference between it and the other versions though...

Strange because as I can see at compatibility chart the MIR 1B hits the mirror at infinity. I am totally confused!

When I first got into looking a manual lenses, I was trying to find a Helios, and if I remember correctly, the 44-4 will not work in the 6D, which I also have.

The infinity Problem comes when trying to focus on far objects. The Mirror hangs and it can be damaged. The best thing to do is to get lenses that do not have this problem. There are a lot of good lenses out there. Another option is to look for a mod for your lens, some can work if you file off the back lip on the lens, although I do not advocate maiming these old lenses, but to each their own.

Bigdaddy

Hallo Mouse,

here is a site that might help you with your question.

http://www.panoramaplanet.de/comp/

Bigdaddy

Thank you for the fast response.

I read this site and I found that both lenses hit the mirror when focused to infinity. What does that mean? Theoriticaly they can cause damage to my camera's mirror. What can I do?

Thanks for the response, Bigdaddy!

Unfortunately what hangs for one person works for another and vice versa. There must be variability in the adapters. I've had the mirror hang occur dozens of times on many different bodies without any permanent damage. You have to decide whether or not the minor risk is worth it for you

 

[bigdaddy]

Hello,

you can probably find some cheap m42 extension rings. I see them a lot in the ebay classified. around 10 Euros for a set of three different sizes.

Bigdaddy

 

[TWI by Dustin Abbott]

I've been playing with a copy of an SMC Tak 50mm f/1.4 that I got recently. Here's one I just got working on. Shot wide open (I believe).