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marcusBMG
Joined: 07 Dec 2012
Posts: 1304
Location: Conwy N Wales
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 Posted: Sun Jun 11, 2017 5:10 pm Post subject: Tamron adaptall x-250mm classic vintage zooms |
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marcusBMG wrote:
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 (~ 5m, 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. F8:
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. F4.5:
Adaptall-2 75-250mm f3.8-4.5. there are two versions of this, I have the later 104A. F8
This lens gave the most consistent results, and it is comfortably superior wide open. I think a reason for the consistency is that the better resolution and contrast wide open enabled better focusing accuracy. F4.5:
You can see a comparison at 200mm, all f-stops to f11, on my castle turret test page here. The performance of the old Z250 is impressively the best of the three to my eyes on the 200mm test.
_________________
pentax ME super (retired)
Pentax K3-ii; pentax K-S2; Samsung NX 20; Lumix G1 + adapters;
Adaptall collection (proliferating!) inc 200-500mm 31A, 300mm f2.8, 400mm f4.
Primes: takumar 55mm; smc 28mm, 50mm; kino/komine 28mm f2's, helios 58mm, Tamron Nestar 400mm, novoflex 400mm, Vivitar 135mm close focus, 105mm macro; Jupiter 11A; CZJ 135mm.
A classic zoom or two: VS1 (komine), Kiron Zoomlock...
Last edited by marcusBMG on Sun Sep 03, 2017 11:59 am; edited 1 time in total |
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visualopsins
Joined: 05 Mar 2009
Posts: 10541
Location: California
Expire: 2025-04-11
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| Posted: Sun Sep 03, 2017 5:17 am Post subject: |
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visualopsins wrote:
WOW WOW WOW WOW WOW WOW WOW WOW WOW WOW WOW WOW WOW WOW WOW WOW WOW WOW WOW WOW WOW WOW WOW WOW ...
_________________
☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony ILCE-7RM2, Spotmatics II, F, and ESII, Nikon P4
Lenses:
M42 Asahi Optical Co., Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200, Tele-Takumar 1:5.6/200, 1:6.3/300, Macro-Takumar 1:4/50, Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm, Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element), Super-Multi-Coated Fisheye-TAKUMAR 1:4/17, Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500, Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100, Super-Multi-Coated Bellows-TAKUMAR 1:4/100, SMC TAKUMAR 1:1.4/50, 1:1.8/55
M42 Carl Zeiss Jena Flektogon 2.4/35
Contax Carl Zeiss Vario-Sonnar T* 28-70mm F3.5-4.5
Pentax K-mount SMC PENTAX ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (51BB), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto (Kiron)
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luisalegria
Joined: 07 Mar 2008
Posts: 6627
Location: San Francisco, USA
Expire: 2018-01-18
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| Posted: Sun Sep 03, 2017 6:16 am Post subject: |
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luisalegria wrote:
Hey!
Did you borrow my bird?
I've been wondering where its been....
_________________
I like Pentax DSLR's, Exaktas, M42 bodies of all kinds, strange and cheap Japanese lenses, and am dabbling in medium format/Speed Graphic work. |
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miran
Joined: 01 Aug 2012
Posts: 1364
Location: Slovenia
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| Posted: Sun Sep 03, 2017 8:25 am Post subject: |
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miran wrote:
Wow, that's seriously impressive! 
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my flickr stream |
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marcusBMG
Joined: 07 Dec 2012
Posts: 1304
Location: Conwy N Wales
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| Posted: Tue Sep 18, 2018 9:17 pm Post subject: two more: adaptamatic and 04A |
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marcusBMG wrote:
Here are some more comparison images, this time from the adaptamatic version of the 80-250mm f3.8
[img]http://www.groupoids.org.uk/photography/PostedPics/104A-Z250-QZ250M /adaptamatic80-250-1-600.jpg[/img]
and from the first version of the adaptall 75-250mm, the 04A. The adaptamatic is reckoned to be optically similar/the same as the adaptall version. The later adaptall 75-250mm 104A was a significant optical revision from this 04A.
Adaptamatic 80-250mm at 250mm,F8 then wide open, pixel peep 1:1 crops:
Adaptall 04A:
The jackdaws weren't very co-operative at the time, but I took these with the adaptamatic later. F8.
_________________
pentax ME super (retired)
Pentax K3-ii; pentax K-S2; Samsung NX 20; Lumix G1 + adapters;
Adaptall collection (proliferating!) inc 200-500mm 31A, 300mm f2.8, 400mm f4.
Primes: takumar 55mm; smc 28mm, 50mm; kino/komine 28mm f2's, helios 58mm, Tamron Nestar 400mm, novoflex 400mm, Vivitar 135mm close focus, 105mm macro; Jupiter 11A; CZJ 135mm.
A classic zoom or two: VS1 (komine), Kiron Zoomlock... |
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