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Converters, adapters and extension tubes All those lens accessories that get in between the lens and the camera.

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Old 26th October 2013
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Question 4/3 to m4/3 shift adapter

Hi there everyone!

Does anyone know of the existance of a shift adapter for 4/3 lenses on m4/3 bodies? I have seen shift adapters which take an OM lens and fit on m4/3 bodies, but these seem to have several disadvantages - firstly the lack of auto focus but also the more serious issue of a lack of affordable wide OM glass - anything with a focal length of less than 28mm is expensive!

I was hoping that there was an adapter out there as described above which would take for instance a 14-54mm to allow a fairly wide angle shot when you couldn't step back as far as you like, but I haven't seen anything like it. I'm beginning to get tempted to start tinkering with a cheap mmf2 copy I have, but it is looking like I would need a 3D printer to make the body of the adapter, and I haven't taken the plunge as yet!

Does anyone else think that the adapter might be useful, or is everyone content to modify perspective in photoshop now?

All thoughts greatfully received - especially from the EM-1 users who would get the most benefit from the fast AF!

Cheers,

Ralph.
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Old 26th October 2013
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Re: 4/3 to m4/3 shift adapter

There isn't one but in the past someone pulled apart an EX25 to use at either end of bellows with connecting ribbon cable so if your game & looking for a challenge then you may find success & satisfaction in doing something similar, but I fear the challenge part will be a challenge to fit the pin connections into such a package. You may prove me wrong & I'd love to see photos of it if you do. I have one of the tilt adapters for OM to M4/3's because it was affordable but the tilt/shift adapters are not so cheap. The straight shift adapters are also available.
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Old 26th October 2013
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Re: 4/3 to m4/3 shift adapter

I'm not sure it would work with 4/3 lenses. With a 35mm-format lens, like the OM ones, the lens produces a large circular image - big enough to cover a 35mm frame. The 4/3 (whether original or micro) image area is smaller, so what the shift mechanism does is move the smaller image area around inside the bigger image. You can see this using the lens to focus an image onto a wall or piece of paper - you should see that any 4/3 lens produces a smaller area of image than any 35mm lens.

The OM series included a couple of shift lenses, a 35mm and 24mm. They were both very expensive, partly because of the extra mechanics required for the shifting mechanism, and partly because the optical design had to produce a larger image circle. A Big43 lens produces an image the same size as m43, so it doesn't give you the flexibility to select different bits of the image by moving the lens around.

What you would need is some sort of 35mm-format super-wide lens and they tend to be expensive anyway.

I probably haven't explained this very well (it's early ) but I hope you can see what I'm getting at.

Ciao ... John
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Old 26th October 2013
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Re: 4/3 to m4/3 shift adapter

By the nature you would be using a tilt shift i would have thought that auto focus wouldn't help
I did raise this way back when the original m43 cameras came out and Ian mentioned it to Oly at the time and apparently they liked the idea! But that was the last i heard
There is an option using a lensbaby and Nikon lens i believe
Dave
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Old 27th October 2013
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Re: 4/3 to m4/3 shift adapter

Quote:
Originally Posted by Bikie John View Post
I'm not sure it would work with 4/3 lenses. With a 35mm-format lens, like the OM ones, the lens produces a large circular image - big enough to cover a 35mm frame. The 4/3 (whether original or micro) image area is smaller, so what the shift mechanism does is move the smaller image area around inside the bigger image. You can see this using the lens to focus an image onto a wall or piece of paper - you should see that any 4/3 lens produces a smaller area of image than any 35mm lens.

The OM series included a couple of shift lenses, a 35mm and 24mm. They were both very expensive, partly because of the extra mechanics required for the shifting mechanism, and partly because the optical design had to produce a larger image circle. A Big43 lens produces an image the same size as m43, so it doesn't give you the flexibility to select different bits of the image by moving the lens around.

What you would need is some sort of 35mm-format super-wide lens and they tend to be expensive anyway.

I probably haven't explained this very well (it's early ) but I hope you can see what I'm getting at.

Ciao ... John
Hi there John, hi everyone!

I was hoping to use a smaller travel than the OM lenses did - they had about 12mm of movement in any direction. I was planning to have only 6mm of movement (due to the half size sensor) and make use of the fact that the image sensor is rectangular rather than square, so hoping that by moving the lens only up in the landscape direction I would stay within the image circle of a 4/3 lens.

As regards to the AF - since I would be only shifting the lens not tilting it it should be ok, especially as the cameras could use contrast AF.

I have got one of the cheap MMF-2 copies to take apart and use the metal couplings and the pins, I really just need to make a body with the slide, but short of getting one custom milled from Aluminium (I haven't got a milling machine (yet - I would like one though!) I'll have to wait until I have a 3D printer to make one from plastic. The basic idea is there though!

Cheers,

Ralph.

Last edited by Ralph Harwood; 27th October 2013 at 09:04 PM. Reason: Typing (again!)
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Old 27th October 2013
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Re: 4/3 to m4/3 shift adapter

Quote:
Originally Posted by Ross the fiddler View Post
There isn't one but in the past someone pulled apart an EX25 to use at either end of bellows with connecting ribbon cable so if your game & looking for a challenge then you may find success & satisfaction in doing something similar, but I fear the challenge part will be a challenge to fit the pin connections into such a package. You may prove me wrong & I'd love to see photos of it if you do. I have one of the tilt adapters for OM to M4/3's because it was affordable but the tilt/shift adapters are not so cheap. The straight shift adapters are also available.
Hi there Ross!

You say that straight shift adapters are available - I've not found any as yet (there were rumours of one being developed back in 2010 but I haven't found it for sale anywhere.) The only ones I have found were the OM to m4/3 type, and then the lens choices become expensive for wide angles.

If you have any info about a m4/3 to 4/3 shift adapter (with pins connected) I'd be very interested!

Cheers,

Ralph.
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Old 27th October 2013
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Re: 4/3 to m4/3 shift adapter

My idea for a 4/3 to m4/3 adapter would be one you could put ND filters in for lenses that can't take filters.
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Old 27th October 2013
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Re: 4/3 to m4/3 shift adapter

Hi there Dave!

Excuse my ignorance, but which 4/3 lenses are there that don't take filters? I thought that the large SHQ lenses had drop in filters, and everything else had a thread on the front?

It should be possible - in fact with a bit of careful glass trimming you could make something to fit inside the mmf with a bit of foam rubber to hold it in tight.

Cheers,

Ralph.
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Old 27th October 2013
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Re: 4/3 to m4/3 shift adapter

Quote:
Originally Posted by Ralph Harwood View Post
Hi there John, hi everyone!

I was hoping to use a smaller travel than the OM lenses did - they had about 12mm of movement in any direction. I was planning to have only 6mm of movement (due to the half size sensor) and make use of the fact that the image sensor is rectangular rather than square, so hoping that by moving the lens only up in the landscape direction I would stay within the image circle of a 4/3 lens.
Ah, see what you mean, neat idea. You were obviously ahead of me, sorry for stating the obvious (but sometimes it is just as well when somebody does!).

John
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Old 27th October 2013
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Re: 4/3 to m4/3 shift adapter

Quote:
Originally Posted by Bikie John View Post
Ah, see what you mean, neat idea. You were obviously ahead of me, sorry for stating the obvious (but sometimes it is just as well when somebody does!).

John
Not at all john - thanks for the input!
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Old 27th October 2013
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Re: 4/3 to m4/3 shift adapter

Quote:
Originally Posted by Ralph Harwood View Post
Hi there Dave!

Excuse my ignorance, but which 4/3 lenses are there that don't take filters? I thought that the large SHQ lenses had drop in filters, and everything else had a thread on the front?

It should be possible - in fact with a bit of careful glass trimming you could make something to fit inside the mmf with a bit of foam rubber to hold it in tight.

Cheers,

Ralph.
The obvious two that spring to mind are the 7-14mm & the 8mm fisheye.
It's true that the 300mm has drop in filters, but the 90-250mm uses a 105mm filter which isn't cheap or easily obtainable.

The other thought is that where you might want to use 2 filters on a wide angle, it may be a way of minimising vignetting.
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Old 27th October 2013
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Re: 4/3 to m4/3 shift adapter

The 7-14 and 8mm fisheye plus the legacy OM 350mm and 38mm macro from my collection. Not that the 38mm would need a ND filter.
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Old 28th October 2013
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Re: 4/3 to m4/3 shift adapter

Quote:
Originally Posted by Ralph Harwood View Post
Hi there Ross!

You say that straight shift adapters are available - I've not found any as yet (there were rumours of one being developed back in 2010 but I haven't found it for sale anywhere.) The only ones I have found were the OM to m4/3 type, and then the lens choices become expensive for wide angles.

If you have any info about a m4/3 to 4/3 shift adapter (with pins connected) I'd be very interested!

Cheers,

Ralph.
No only OM that I know of.
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Old 28th October 2013
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Re: 4/3 to m4/3 shift adapter

I have an OM 35mm shift lens going spare. It's the more expensive coated variety and there was an uncoated one on the forum recently.
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Old 28th October 2013
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Re: 4/3 to m4/3 shift adapter

Isn't managing perspective in PP an easier solution?

Or am I missing something here? (I wouldn't be surprised if I am... )
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