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06-11-2017, 10:06 AM - 2 Likes   #3376
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I've been playing with my adaptall x-250mm zooms. These are 1:1 pixel peeping crops to illustrate. All at 250mm. Focus point was (attempted) to be on the eye(s). Samsung NX20.
Z250: the big old 80-250mm, constant f3.8, clearly derived from the adaptamatic version given their similarity. A premium lens of its time..
F8.





This old zoom is sharp! But soft wide open at this focus range (200mm, near infinity was much better - link below), and even on apsc dslr there is usually noticeable IQ loss away from the image centre. F3.8:



Z250's successor, the QZ-825M (aka QZ-250M), 80-250mm f3.8-4.5. Also a 2 ring zoom, more compact, no tripod mount.





Again impressive stopped down. But if anything even softer than the Z250 wide open, and more noticeable fringing/CA evident, most specifically on other test shots I did.



Adaptall-2 75-250mm f3.8-4.5. there are two versions of this, I have the later 104A.





This lens gives the most consistent results, and it is comfortably superior wide open.



You can see the comparison at 200mm, all f-stops to f11, on my castle turret test page here. The performance of the Z250 is impressively the best to my eyes on this test.

06-12-2017, 08:04 PM - 1 Like   #3377
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K-3 with Tamron Adaptall-2 44A 28-70mm f3.5-4.5



06-13-2017, 07:10 PM   #3378
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The 40 and 44 are, in my opinion, very underrated lenses. Optically they'd be SP-quality, IME, if they were 2.8 lenses and the body wasn't early poly-carbonate designs. I've never encountered anyone with a bad opinion of them or heard of one with mechanical issues. As lower cost trial lenses for the then new designs in poly-carbonates Tamron was wisely cautious with marketing and soon produced similar enhanced models with very little benefit except marketing looks and 2.8 aperture.

I've owned and enjoyed both for almost thiry-plus years on film and digital bodies. Both have played very well with the Tamron 1.4x TC and extension rings or close-up filters too.

It's good to see 'em displayed as well this.
06-14-2017, 03:48 AM   #3379
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QuoteOriginally posted by pacerr Quote
The 40 and 44 are, in my opinion, very underrated lenses. Optically they'd be SP-quality, IME, if they were 2.8 lenses and the body wasn't early poly-carbonate designs. I've never encountered anyone with a bad opinion of them or heard of one with mechanical issues. As lower cost trial lenses for the then new designs in poly-carbonates Tamron was wisely cautious with marketing and soon produced similar enhanced models with very little benefit except marketing looks and 2.8 aperture.

I've owned and enjoyed both for almost thiry-plus years on film and digital bodies. Both have played very well with the Tamron 1.4x TC and extension rings or close-up filters too.

It's good to see 'em displayed as well this.

I agree that the 44A is under-appreciated - I don't see many shots with them at all, either here or on flickr....





06-14-2017, 10:15 AM - 2 Likes   #3380
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QuoteOriginally posted by pepperberry farm Quote
I don't see many shots with them at all,
Maybe 'cause most folks don't want to admit to using lenses that sell 2-for-twenty-bucks used regardless of optical quality?

My two started in a mishap investigation kit with a K1000, a cheap strobe and a set of close-up filters and never disappointed me.
06-15-2017, 03:18 AM - 2 Likes   #3381
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K-3 with Tamron Adaptall-2 44A 28-70mm f3.5-4.5





06-15-2017, 09:42 AM   #3382
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QuoteOriginally posted by pepperberry farm Quote




Every time I see your photos taken with the 72B, I kick myself for not buying one when they were still available new. The supply of used ones seems to have totally dried up


Steve

06-15-2017, 10:20 AM   #3383
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QuoteOriginally posted by stevebrot Quote
Every time I see your photos taken with the 72B, I kick myself for not buying one when they were still available new. The supply of used ones seems to have totally dried up


Steve

occasionally on eBay, but more often I'll see one on KEH, or even Sunrise Camera....
06-15-2017, 10:50 AM - 1 Like   #3384
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QuoteOriginally posted by pepperberry farm Quote
occasionally on eBay, but more often I'll see one on KEH, or even Sunrise Camera....
There is one on eBay now, from Germany with a no-name Canon adapter for $201 USD, but I am shy of spending real money (over $100) on an overseas purchase.


Steve
06-16-2017, 05:14 PM   #3385
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K-3 with Tamron Adaptall-2 44A 28-70mm f3.5-4.5





06-17-2017, 05:05 AM - 2 Likes   #3386
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06-17-2017, 08:09 PM - 2 Likes   #3387
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K-3 with Tamron Adaptall-2 44A 28-70mm f3.5-4.5

06-20-2017, 10:18 AM   #3388
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I just picked up a 28A. (Actually 2) The first one had a stuck zoom. I tried to fix it myself but was unsuccessful. The aperture linkage arm was horribly bent and wasn't making contact properly with the aperture lever. So I bought a second and it seems like it's working properly.

Can't seem to find a copy of the manual anywhere. Does anyone have a copy of the 28A owner's manual or is willing to create a pdf scan of physical manaul?
06-20-2017, 10:42 AM   #3389
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It's very similar to the 40A

http://www.tremyfoel.co.uk/photography/Adaptall/40A-UserManual.pdf
06-20-2017, 10:50 AM   #3390
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QuoteOriginally posted by marcusBMG Quote
Thanks!
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