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12-25-2013, 08:12 PM   #1
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Tamron 200mm 3.5 Adaptall2 works with Pentax DSLR?

So I visit my favorite camera 'pusher' yesterday...you know, wish him a happy Christmas, etc and I spy this Tamron 200mm 3.5 model 04B Adaptall2. $40 bucks with the caps and almost new condition, not to mention how the world looks THROUGH the thing...geez. (I think he saves stuff up just for me and salts the shelves when he sees me drive up just to sucker me in. At least I got off cheap this time, LOL!

Bad news; this came with a Nikon mount and it should work fine on its 'intended' a nice F3 however....while I'm researching I see they make...hey, it's called Adaptall, right?

If I find an Adaptall 2 mount for Pentax KA, would that be the proper mount for say, K1000? ME Super? K100D Super DSLR?!? And... would I be correct that this lens, with the proper mount will meter through the lens on my K100DS?

12-25-2013, 08:28 PM   #2
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Adaptall 2 K would work for M modes on film and require green button metering on digital, the far more expensive KA has the contacts to make it into an A lens for correct metering on digital (or auto on film too I guess), but they apparently can be a bit fiddly so do some homework about potential issues.
12-25-2013, 08:31 PM   #3
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For the earlier film cameras don't need a PKA adapter--will be twice as expensive and work the same. For a later camera (dslr) the PKA will allow the A setting--but these adapters are somewhat less reliable. e.g., some will start at f/4 even if the lens is much faster (I have 2 PKA's and 1 has this minor problem!).
12-27-2013, 11:40 AM   #4
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I have both the PK and PKA adapters and seldom use the PKA. The PK adapter is usually available pretty cheap. The PK adapter should work fine in all modes with your ME Super and K1000. With your K100DS you will have to use stop-down metering in the same manner as for Pentax-K and Pentax-M lenses.


Steve

12-27-2013, 01:08 PM   #5
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Thanks Steve,
If I have the concept correct, the aperture is always stopped down because there's no M/A on this lens but the K100DS still meters through the lens normally. (I haven't gotten around to fiddling with my K lenses on the thing...yet.

QuoteOriginally posted by stevebrot Quote
I have both the PK and PKA adapters and seldom use the PKA. The PK adapter is usually available pretty cheap. The PK adapter should work fine in all modes with your ME Super and K1000. With your K100DS you will have to use stop-down metering in the same manner as for Pentax-K and Pentax-M lenses.


Steve
12-28-2013, 03:49 PM   #6
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QuoteOriginally posted by dubiousone Quote
If I have the concept correct, the aperture is always stopped down because there's no M/A on this lens but the K100DS still meters through the lens normally.
Not quite so. As pointed out by stevebrot, with the Adaptall-2 P/K Custom Mount, your lens will behave as any, fully manual K-mount lens. On a Pentax DSLR it will only stop down the moment you shoot or when you press the green button on your camera to meter the light. With the P/KA Custom Mount, you can use your Pentax DSLR in all modes, and while I agree that the P/KA design may not be the most robust, it is still my adapter of choice.

You can find links to the various custom mounts here: Tamron Adaptall and Adaptall-2 Custom Mounts

PS.: Congratulations with your 200mm f/3.5 Model 04B lens. It's a lovely lens - have it myself.
12-28-2013, 10:56 PM   #7
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Say guys, how does the KA mount compare to a M42? I find that the M42 is preferable to the basic K mount.
12-29-2013, 10:42 AM   #8
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Thanks Stone, Steve!
I looked at the KA mount and after doing some research ordered the K mount from a store I hope lists its product's condition accurately. I can see why the KA would be troublesome and being somewhat of a reliability freak I don't see any reason to 'fight' my equipment but I'll probably get one of those mounts eventually. While I was at it I also got a spare Nikon mount and an M42 because I shoot all three camera types. Of course, I made the mistake of going by the 'pusher's' shop the other day to get a lens cap and some other trinkets and show off my Christmas present, a Nikon F3 setup. Dont'cha know he makes me a screaming deal on an Adaptall2 90mm 2.5, 2x teleconverter with converters for Minolta and Canon. I swear, this guy...LOL. This stuff has been sitting for quite a while, all in boxes with caps, papers, etc and obviously came from an old camera guy. It's sort of a honor to 'inherit' such fine equipment and give it a home!

That 90mm looks like a beautiful piece of kit and of course I didn't get much chance to play this weekend but if I can finish up my chores today (and the light holds out) I'll try to post some pics of my Adaptall collection. (Tamron's one of my favorite brands ya know...)

12-29-2013, 10:43 AM   #9
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Followup question;
What's the difference between the Adaptall2 Nikon AI mount (No prong) and the AI that does have the metering prong?
01-01-2014, 12:12 PM   #10
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QuoteOriginally posted by dubiousone Quote
Followup question;
What's the difference between the Adaptall2 Nikon AI mount (No prong) and the AI that does have the metering prong?
Some more info here

Information page on Tamron adaptall, adaptall-2 system and lenses

PS you can sell the nikon mount - typical ebay price UK is 20 = $30+
01-01-2014, 08:56 PM   #11
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Thank you for that link Marcus, haven't seen that one yet and it had some good info!
01-02-2014, 07:27 AM   #12
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QuoteOriginally posted by dubiousone Quote
Thank you for that link Marcus, haven't seen that one yet and it had some good info!
I appreciate your comments and welcome any feedback or info to enhance the page, which I put together very much as a reflection of my own process of becoming acquainted with the adaptalls. Cheers
01-02-2014, 11:00 AM   #13
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I stumbled on to them quite by accident; the 200mm was so glorious looking through it I couldn't resist and of course, the 90mm and teleconverter was too good a deal to pass up. The more I read about them the more I've come to believe that their decision to discontinue the line was based on sales; why sell just one lens with a few $40 adapters when you can sell more lenses.

Tamron has some really nice glass and the vintage stuff is so well built; on top of that it's usually such a bargain!
01-02-2014, 12:11 PM   #14
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Many of the Adaptall-2 lenses came out in late 1980's to early 1990's, and I believe (many) AF lenses came out in late 1980's-1990's, and also possibly when new Canon/others lens mounts were introduced. Would be significant factors in sales.
01-06-2014, 11:42 AM   #15
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QuoteOriginally posted by dms Quote
Many of the Adaptall-2 lenses came out in late 1980's to early 1990's, and I believe (many) AF lenses came out in late 1980's-1990's...
AF coupling was the death blow to the Adaptall system. It is good to note that Tamron continued making and selling a few Adaptall-series lenses (and the full adapter line) until fairly recently.


BTW...the bulk of the Adaptall-2 line of lenses date from the late-1970s and into the mid-1980s with only a few being released after 1986.

http://adaptall-2.org/




Steve
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