Enlarging lens with M23,5x0,5 mount
I have just got myself a Meopta Opematus 6x6 enlarger. The unit itself seem to be very good quality and even have auto focus (rail).
The Opematus comes with an uncoated 4/75mm Belar lens, think it is tessar type.
SO I have two questions:
1, Will the autofocus work with a 50mm lens, I am eager to do some large 35mm prints. There is a find adjustment, but I don;t think it will compress the bellows enough to allow a 50mm lens to focus properly. Anyone with experience?
2, What are the names to look for if I want t get myself a 50mm lens? I know about Belar and Anaret, but the 23,5mm thread seems to be rather difficult to find. I know there is a converter, costs about 6eur, but I think it will add more displacement and makes using 75mm and shorter difficult.
If the enlarger allows you: make the hole bigger and fit a 39mm ring with tread......
Or get a 42mm ring with an adapter to 39mm. (old Praktica or Zenit)
I should have a 39mm ring in Holland, but I wouldn't be back untill somewhere in August.
Do I get this right that you have a lensboard with 23.5mm thread? If so, go to www.fotoimpex.de and ask for a 39mm lensboard.
You don't give a location, but if you are in the UK I recommend contacting http://www.silverprint.co.uk. They either stock, or can obtain on short notice, a range of Meopta parts. As ath says, you need to ask for a 39mm lensboard to accept most enlarger lenses.
Both Meopta lensboards that I've owned are recessed. They are used one way up with a 50mm lens to hold the lens closer to the negative, and the other with longer focal lengths.
I don't think any Meopta Opemus have autofocus. They do have a focus help function that works like a rough guide, and it works regardless of focal length. You still have to fine focus the normal way.
The Opemus is a very nice, simple and compact enlarger. I'm using a Opemus IIa myself.
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Mine isn't an Opemus, it is an Opematus! Accroding to Meopta, it is a product from the 1940-1945 and it is definitely mechanical autofocus! I was surprised how old it was considering the excellent condition it is in.
Originally Posted by Trond
Internet search didn't turn up much. The lensboard is fixed and not the reversable type. Seems I am a bit stuck with making smaller 35mm prints.
Here's a photo I found on the net. Mine had a extra section under the lamp where there a drawer to put filters. Also there is a condenser.
Look for one of these:
Belar 4.5/50 #392 812 110 262
Anaret 4.5/50 #392 812 10 239 (don't confuse with Anaret S that has Leica M39 thread)
Here is one: http://cgi.ebay.co.uk/ROGONAR-S1:4.5...29168005r14513
Sorry! I misunderstood. The Opematus seem like an interesting enlarger. I suppose the only way to find out if it will focus with a 50mm is to try it out. The Anaret is inexpensive.
Originally Posted by Hamster