Minolta SR lens to Olympus OM ( film ) body adapter ?

neilt3

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I've done several searches with no luck .

I'm after putting a Minolta SR mount ( aka MD or MC manual focus era lens ) bellows lens on the Olympus OM ( film era , not 4/3 or M4/3 ) mount telescopic extension tube .

The whole lot will then mount on a digital camera with an adapter I already have .

.

The reason why I want an SR to OM. Adapter is because I have a Minolta bellows lens as well as several Olympus OM bellows lenses .

I have bellows for both systems , and fixed extension tubes etc , but when I'm out on the road touring in my campervan I want to minimise the kit I take with me .

Having just one set off bellows ( or the telescopic tube ) out with me will make this easy .

And an adapter is better than replacing the Minolta lens with an Olympus one ( who don't do a 100mm bellows lens .

.

So does anyone know if one was or is made , if so where ?

A ready made one would be a better option than having one made .

Thanks .
 
Or possibly a Nikon F lens to Olympus OM (film) body .

As I have a Minolta SR to Nikon F adapter , and I don't mind stacking .
 
You probably want some sort of universal bellows with swappable mounts to use your bellows lenses.
 
You probably want some sort of universal bellows with swappable mounts to use your bellows lenses.
I do have an AICO autobellows that has interchangable mounts , but it's specifically the Olympus telescopic extension tube that I want to use as when it's not in use it's takes up not much more space than a 50mm lens , so it's dead handy to fit in a camera bag or pocket .

Likewise I have compact folding bellows that Minolta made that folds down to about 2 1/2" square by about 1" thick .

It's framework folds in on itself so it fits in a pocket . Which is also fine , though I would need an Olympus OM lens to Minolta SR adapter to use the Olympus lenses on that .

Either way is workable , but when I'm on the road I don't want to be taking a traditional bellows unit .

Cheers .

--
https://www.flickr.com/photos/neilt3/sets
 
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You might be best off getting a set of Minolta MD extension tubes, often vintage, which are threaded on the rear, and hope it's a usable filter thread/something you can get a step ring made for:

image.png


Then attach to an Olympus OM reversing ring.

I have a set of Konica AR tubes like this, also vintage.
 
On a little further investigation, it turns out they do make those modern, cheapo threaded extension tubes for Minolta MD mount too:

image.png


Pixco Macro Extension Tube For Minolta MD/MC Camera Specs are based on 50mm f1.4 lens

£6.23/8.38USD. Same as before, use the threaded side to connect to an OM reversing ring, step ring might be required. As reversing rings are 'male' by default, the inner threads of a step-down ring would probably have to be used.
 
You might be best off getting a set of Minolta MD extension tubes, often vintage, which are threaded on the rear, and hope it's a usable filter thread/something you can get a step ring made for:

image.png


Then attach to an Olympus OM reversing ring.

I have a set of Konica AR tubes like this, also vintage.
That's probably a workable solution .

If I haven't already got an OM reverse ring ( I might well have in one of box of bits !) There about £30 .

I've a few sets of early SR extension tubes , I think one of them might be the type that screw together . If not I can probably pick one up for less than £10.

Joining the two might need a stack of 49mm filters with the glass removed to extend the Reverse rings thread and expoxy into the tubes , as there both male threads .

Or SRB might do a double female thread adapter .

I'll hang on to see if anyone's already heard of a ready made adapter before I make my own .

Thanks for the suggestion .

--
 
You might be best off getting a set of Minolta MD extension tubes, often vintage, which are threaded on the rear, and hope it's a usable filter thread/something you can get a step ring made for:

Then attach to an Olympus OM reversing ring.

I have a set of Konica AR tubes like this, also vintage.
That's probably a workable solution .

If I haven't already got an OM reverse ring ( I might well have in one of box of bits !) There about £30 .
It is surprising that I couldn't find one on aliexpress, some old listings that are no longer sold. Nevertheless, I found a couple of eBay listings for a period correct 49mm reverse ring, roughly same total cost but one with 'free' postage:

s-l1600.jpg


s-l1600.jpg


Around £13/$17.48 USD.

https://www.ebay.co.uk/itm/114737148021

https://www.ebay.co.uk/itm/114736829430
I've a few sets of early SR extension tubes , I think one of them might be the type that screw together . If not I can probably pick one up for less than £10.

Joining the two might need a stack of 49mm filters with the glass removed to extend the Reverse rings thread and expoxy into the tubes , as there both male threads .

Or SRB might do a double female thread adapter .

I'll hang on to see if anyone's already heard of a ready made adapter before I make my own .
No need to pop glass from a filter, you can join 'male' threads together with a common step down ring. That is, one which steps down to the thread you're working with, e.g. 62-58mm, because when you're going to the next one down it will usually have a constant inner thread. Like so:

Problem- two 'male' 58mm threads. EOS reversing ring.

Problem- two 'male' 58mm threads. EOS reversing ring.

Solution- 62-58mm step down ring.

Solution- 62-58mm step down ring.

closeup of 'constant inner thread' of step down ring

closeup of 'constant inner thread' of step down ring

You probably already have this to hand.
 
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It is surprising that I couldn't find one on aliexpress, some old listings that are no longer sold. Nevertheless, I found a couple of eBay listings for a period correct 49mm reverse ring, roughly same total cost but one with 'free' postage:

s-l1600.jpg


Around £13/$17.48 USD.

https://www.ebay.co.uk/itm/114737148021

https://www.ebay.co.uk/itm/114736829430
The type you show has a locating pin socket to lock it onto the camera .

With the manual focus OM cameras the locking pin is built into the lens , this type shown in the picture is the type used on the later autofocus SLR's , such as the OM 101 .

Either they've used a generic stock photo in their listing or they have listed it wrong .

The type of revering ring needed is the more expensive one like this ; https://www.ebay.co.uk/itm/291706238104?hash=item43eb0bf498:g:ocIAAOSwh-1W4sRe

Notice the push in tab towards the bottom .

I've ordered one of these so I should have it in a few days .

3ef9be8f0de34b58b4f232202c0bc2f6.jpg
I've a few sets of early SR extension tubes , I think one of them might be the type that screw together . If not I can probably pick one up for less than £10.
I had a look at the extension tubes I already have .

All my genuine Minolta ones are all bayonet fit, auto aperture type .

I did have one of those cheapo type ones , but the thread is an odd size , about 57.5mm or something .

So I've ordered up one of the Minolta AT-5 , it's listed as an "Automatic Extension Tube Set" , but as it looks like a screw together type design , I can't see it myself .

Makes no difference as it'll typically be adapted to another system anyway .
Joining the two might need a stack of 49mm filters with the glass removed to extend the Reverse rings thread and expoxy into the tubes , as there both male threads .

Or SRB might do a double female thread adapter .

I'll hang on to see if anyone's already heard of a ready made adapter before I make my own .
No need to pop glass from a filter, you can join 'male' threads together with a common step down ring. That is, one which steps down to the thread you're working with, e.g. 62-58mm, because when you're going to the next one down it will usually have a constant inner thread. Like so:

closeup of 'constant inner thread' of step down ring

closeup of 'constant inner thread' of step down ring

You probably already have this to hand.
I have got a load of step up and step down rings , so if the Minolta tubes do have a standard filter thread sized thread , it'll straightforward to fit .

If not I'll soon bond some together .

Thanks again for the suggestions .

--
https://www.flickr.com/photos/neilt3/sets
 
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Since the mount registration of the OM is longer than SR, which makes infinity impossible without adding extra optics, there was/is very little demand for such an adapter.

You are heading the direction I'd recommend, a little ingenuity, a wheelbarrow full of determination, and a dash of luck, and you should be able to cobble together a useful solution.

If you can't find a one-off part, RAF Camera may be able to help you out like they helped me out. http://forum.mflenses.com/help-with-bellows-modification-t78913.html
 
It is surprising that I couldn't find one on aliexpress, some old listings that are no longer sold. Nevertheless, I found a couple of eBay listings for a period correct 49mm reverse ring, roughly same total cost but one with 'free' postage:

Around £13/$17.48 USD.

https://www.ebay.co.uk/itm/114737148021

https://www.ebay.co.uk/itm/114736829430
The type you show has a locating pin socket to lock it onto the camera .

With the manual focus OM cameras the locking pin is built into the lens , this type shown in the picture is the type used on the later autofocus SLR's , such as the OM 101 .

Either they've used a generic stock photo in their listing or they have listed it wrong .

The type of revering ring needed is the more expensive one like this ; https://www.ebay.co.uk/itm/291706238104?hash=item43eb0bf498:g:ocIAAOSwh-1W4sRe

Notice the push in tab towards the bottom .

I've ordered one of these so I should have it in a few days .
Oh, that's really quite strange. You're right, it is built into the lens from what I can see on my OM adapters. In the description they emphasise compatability with OM-1/OM-2 so not sure what's going on.
 
Since the mount registration of the OM is longer than SR, which makes infinity impossible without adding extra optics, there was/is very little demand for such an adapter.

You are heading the direction I'd recommend, a little ingenuity, a wheelbarrow full of determination, and a dash of luck, and you should be able to cobble together a useful solution.

If you can't find a one-off part, RAF Camera may be able to help you out like they helped me out. http://forum.mflenses.com/help-with-bellows-modification-t78913.html
I've had a few things from RAF camera , I've to order an oddball adapter from him soon once I've checked the tread for a Copal 3s mount I have to hold a standard lens filter .

The shutters an old one and uses a finer thread than the modern versions .
 
It is surprising that I couldn't find one on aliexpress, some old listings that are no longer sold. Nevertheless, I found a couple of eBay listings for a period correct 49mm reverse ring, roughly same total cost but one with 'free' postage:

Around £13/$17.48 USD.

https://www.ebay.co.uk/itm/114737148021

https://www.ebay.co.uk/itm/114736829430
The type you show has a locating pin socket to lock it onto the camera .

With the manual focus OM cameras the locking pin is built into the lens , this type shown in the picture is the type used on the later autofocus SLR's , such as the OM 101 .

Either they've used a generic stock photo in their listing or they have listed it wrong .

The type of revering ring needed is the more expensive one like this ; https://www.ebay.co.uk/itm/291706238104?hash=item43eb0bf498:g:ocIAAOSwh-1W4sRe

Notice the push in tab towards the bottom .

I've ordered one of these so I should have it in a few days .
Oh, that's really quite strange. You're right, it is built into the lens from what I can see on my OM adapters. In the description they emphasise compatability with OM-1/OM-2 so not sure what's going on.
It's more likely they've messed up the description , rather than listing it with the wrong picture .

Doesn't inspire me with confidence to deal with them !

Anyhow , everything I've ordered should be with me by the end of the week along with an automatic focus stacking rail that does steps from 1 micron upwards .

So as soon as I can adapt one thread to another of the reverse mount and extension tube , I'll be good to go . :)
 

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