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05-09-2011, 05:57 PM   #1
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I'm in luuuurve (Pentacon 1.8/50)

I posted up a little while ago that I had found two old lens from my Mothers old Praktica.
One of these is a Pentacon 1.8/50mm. Someone mentioned that this could have been a rebranding of another lens thats held in high regard (?)

So my M42 adapter showed up today, so on it went.
Now these photos *are* fairly uninteresting and could do with a *lot* of improvement in my technique (This is my first all manual lens). But I just *really* love this thing.

I just need to now find it a case and caps (Thoughts?)







The other lens I found, a Duo-Tamron 135mm is rubbish.

05-09-2011, 06:01 PM   #2
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Wow, looks great!

Makes me want to get a M42 adapter...!
05-09-2011, 06:55 PM   #3
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That's quite a nice lens. The Bokeh is superb, at least to my tastes. Does the Praktica it came with still work? If so it might make a nice rear cap!
05-09-2011, 07:13 PM   #4
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Yeah, ir works fine, but no end caps

05-09-2011, 07:20 PM   #5
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QuoteOriginally posted by Lurch Quote
Yeah, ir works fine, but no end caps
I was suggesting that the lens might be happy (and useful) enough on the Praktica, eliminating the need for a rear cap.
Enjoy it either way, I'm sure that it's equally capable whether there's a digital sensor or a B&W film behind it.
05-09-2011, 07:41 PM   #6
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QuoteOriginally posted by Lurch Quote
(Thoughts?)
My understanding is that the Pentacon 50/1.8 is and was also branded as Meyer-Oreston 50/1.8. They are one and the same lens were shipped under both labels with various Praktica models. As suggested above, you might want to give run some film through the Praktica. They are supposed to be very capable cameras, if a little spartan.

http://www.praktica-users.com/lens/mlenses/morp1.8_50.html


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05-09-2011, 08:31 PM   #7
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The Pentacon lenses came later after VEB Feinoptisches Werk Görlitz was incorporated into the Pentacon operation. The 50mm f1.8 used the same optical formula as the Meyer Oreston with multi-coating and improved helicoid grease.
05-09-2011, 11:20 PM   #8
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Thanks for the replies guys.
It's nice to put some history to this lens

05-10-2011, 01:37 AM   #9
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Yeah, the magical Oreston. I have both the Meyer Oreston (210g) and Pentacon electric (190g) versons in M42. Mine are auto-only M42, with no M/A or preset selections. The Meyer was my first, and I glued down the f-stop pin, so it would be usable on my K20D. I left the Penty alone so it would work on my Spotties and Prakticas.,

The Oreston is one of those "sprinkled with [expletive deleted] pixie dust" lenses, with fine qualities of bokeh, sharpness, rendering, dimensionality, as can be seen. It will be my lens-of-the-day in a couple days, after I finish working-out the Vivitar 24/2. Both the Meyer and the Viv focus to about 30cm / 1ft which is nicely close. I can fit a safe cheap thick non-infinity-focus M42-PK adapter to the Meyer to bring its view in even closer, to maybe 20-25cm (but I haven't measured exactly). Yeah, a sweet thing about short-ish M42's is that they're easily fitted for close work.
05-10-2011, 01:41 AM   #10
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It's a lens that always pleases me, the colours are wonderful, it's sharp and the bokeh is subtle. They are also well made and feel good to use.
For the price of them, they are superb.
05-10-2011, 01:48 AM   #11
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So I just bolted it on with the adapter - was that wrong? Is there something else I should have done?
05-10-2011, 07:55 PM   #12
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QuoteOriginally posted by Lurch Quote
So I just bolted it on with the adapter - was that wrong? Is there something else I should have done?
If your version has no M/A switch, the aperture will remain wide-open that way. For an auto-only version to be usable at something other than f/1.8, you need some way to depress the aperture pin. I have read of, but not tried, pricey M42-PK adapters that will hold the pin down.

The other techniques are glue, or wedging, or surgery. Glue tends to be permanent and decreases resale value. Some M42 lenses have enough space around the pin that it can be wedged down with a bit of very thin plastic. But neither of mine were so endowed. The surgical method involves removing the lens base, blocking the pin down, then re-assembling the lens. I couldn't remove the bases on either of mine.

So, if you have an auto-only version, your options are:

* Live with it as-is, only shooting wide-open.
* Get a pin-holding adapter, which costs rather more than the lens.
* Glue or jam or block the pin. Jamming/blocking should be reversible.
* Trade it for a M/A version, if such exists. I don't know about that.

If you DO have a version with the M/A switch, just set it to M, and WAIL!!!
05-10-2011, 09:48 PM   #13
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I just bought this lens for 15EUR with shipping. Mine has A/M switch. The lens came with aperture not working but was easy to fix. Just undo the 3 screws in the back. The aperture control mechanism is in part mounted onto the back casing - so nothing will fall out. There you see the pin too and you can shim it like we do with Helios 44's.
Since mine has the A/M switch I just removed the pin all together. When you put the back cover on again just make sure that the mechanism in the cover will line/catch the aperture moving lever on the lens.
I have seen at least 3 versions of this lens. Two of them were all black but one ”zebra”. I think the older models have the serial number on the front ring. Mine has it engraved onto the side of the front barrel.
05-10-2011, 09:49 PM   #14
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QuoteOriginally posted by RioRico Quote
If your version has no M/A switch, the aperture will remain wide-open that way. For an auto-only version to be usable at something other than f/1.8, you need some way to depress the aperture pin. I have read of, but not tried, pricey M42-PK adapters that will hold the pin down.

The other techniques are glue, or wedging, or surgery. Glue tends to be permanent and decreases resale value. Some M42 lenses have enough space around the pin that it can be wedged down with a bit of very thin plastic. But neither of mine were so endowed. The surgical method involves removing the lens base, blocking the pin down, then re-assembling the lens. I couldn't remove the bases on either of mine.

So, if you have an auto-only version, your options are:

* Live with it as-is, only shooting wide-open.
* Get a pin-holding adapter, which costs rather more than the lens.
* Glue or jam or block the pin. Jamming/blocking should be reversible.
* Trade it for a M/A version, if such exists. I don't know about that.

If you DO have a version with the M/A switch, just set it to M, and WAIL!!!
Ok - Mine *does* have the M/A switch.
So just set it to M and go nuts?
05-10-2011, 11:07 PM   #15
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QuoteOriginally posted by Lurch Quote
Ok - Mine *does* have the M/A switch.
So just set it to M and go nuts?
You've an M/A switch! You lucky duck!

Yes, just do it. Stay in Av mode and set the aperture as you wish. Have fun!

(Did I write all that repair stuff for nothing? Argh...)
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