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ghost2000
Joined: 16 Jul 2024
Posts: 5
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 Posted: Tue Jul 16, 2024 9:13 am Post subject: The full name of "DSB" in Yashica lens |
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ghost2000 wrote:
I would appreciate some help.For some reason I wonder to know the full name of the "DSB" in Yashica lens.I can't find it in my browser.if someone know it.Tell me please!!! ( ´◔ ‸◔`) |
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RokkorDoctor
Joined: 27 Nov 2021
Posts: 1394
Location: Kent, UK
Expire: 2025-05-01
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| Posted: Tue Jul 16, 2024 1:40 pm Post subject: |
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RokkorDoctor wrote:
The most relevant discussion I could find, which is still speculation rather than definite confirmation:
https://yashica.boards.net/thread/970/dsb-zoom-bit-special
A quote from the discussion on that forum:
| lumiworx wrote: |
Yashica seemed to use fairly simple labeling when it came to both model and part numbers before Kyocera and their marketing madmen got involved, so with that in mind...
My guess is there was a basic name change that came with the change in mounting - from Yashinon DS (single coated for M42), that evolved into Yashica DSB (single coated for C/Y), where 'B' was the 2nd iteration. At the same time the mount changed, they dropped the 'nicknames' for optical diagraming (Yashinon, Yashikor, etc.); so that everything was just "Yashica" or "Yashica Lens", plus a 'lens model / coating type' lettering combination.
If you add the YUS and MC lenses into the mix after the switch to a bayonet mount, it starts to get real messy. The YUS line was the uncoated and discounted end of the spectrum, and the MC lenses were multi-coated, but I presume they were not using the same AR coatings the ML line used, but maybe just dual/triple HR coatings.
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EDIT: welcome to the forum by the way, ghost2000! 
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Mark
SONY A7S, A7RII + dust-sealed modded Novoflex/Fotodiox/Rayqual MD-NEX adapters
Minolta SR-1, SRT-101/303, XD7/XD11, XGM, X700
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Ricoh GX100
Minolta majority of all Rokkor SR/AR/MC/MD models made
Sigma 14mm/3.5 for SR mount
Tamron SP 60B 300mm/2.8 (Adaptall)
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stevemark
Joined: 29 Apr 2011
Posts: 3908
Location: Switzerland
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| Posted: Tue Jul 16, 2024 7:44 pm Post subject: |
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stevemark wrote:
OK, the "B" part of "DSB" is tentatively explained. So the "DS" still needs to be discussed, right?
S
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RokkorDoctor
Joined: 27 Nov 2021
Posts: 1394
Location: Kent, UK
Expire: 2025-05-01
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| Posted: Tue Jul 16, 2024 8:01 pm Post subject: |
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RokkorDoctor wrote:
It does indeed Stephan
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Mark
SONY A7S, A7RII + dust-sealed modded Novoflex/Fotodiox/Rayqual MD-NEX adapters
Minolta SR-1, SRT-101/303, XD7/XD11, XGM, X700
Bronica SQAi
Ricoh GX100
Minolta majority of all Rokkor SR/AR/MC/MD models made
Sigma 14mm/3.5 for SR mount
Tamron SP 60B 300mm/2.8 (Adaptall)
Samyang T-S 24mm/3.5 (Nikon mount, DIY converted to SR mount)
Schneider-Kreuznach PC-Super-Angulon 28mm/2.8 (SR mount)
Bronica PS 35/40/50/65/80/110/135/150/180/200/250mm |
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ghost2000
Joined: 16 Jul 2024
Posts: 5
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| Posted: Thu Jul 18, 2024 10:17 am Post subject: Thanks a lot! |
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ghost2000 wrote:
I have a Yashica DSB 50mm F1.9.And I want to make a video of it.Your comments helps me a lot!(๑ơ ₃ ơ)♥ |
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stevemark
Joined: 29 Apr 2011
Posts: 3908
Location: Switzerland
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| Posted: Thu Jul 18, 2024 12:46 pm Post subject: Re: Thanks a lot! |
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stevemark wrote:
| ghost2000 wrote: |
| I have a Yashica DSB 50mm F1.9.And I want to make a video of it.Your comments helps me a lot!(๑ơ ₃ ơ)♥ |
If you want to make a video about it, you should use the lens yourself, shooting in different situations, and compare it with other lenses. If you cannot report your own findings your video may not be convincing ...
S
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ghost2000
Joined: 16 Jul 2024
Posts: 5
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| Posted: Fri Jul 19, 2024 5:14 am Post subject: That's a good way but I have no condition(→_←) |
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ghost2000 wrote:
Actually,this lens is so rarely in my country.I got it form a friend of mine.I hardly find any information about this lens.So I want to make a video to introduce it.I don't have the suitable lens to compare. ( T﹏T ) |
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visualopsins
Joined: 05 Mar 2009
Posts: 10948
Location: California
Expire: 2025-04-11
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| Posted: Fri Jul 19, 2024 3:48 pm Post subject: |
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visualopsins wrote:
Can we see a photo please? 
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Cameras: Sony ILCE-7RM2, Spotmatics II, F, and ESII, Nikon P4
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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-A 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 (151B), 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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ghost2000
Joined: 16 Jul 2024
Posts: 5
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| Posted: Sat Jul 20, 2024 11:11 am Post subject: Are you familiar with this lens?Or know something about it? |
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ghost2000 wrote:
| visualopsins wrote: |
| Can we see a photo please? |
#1
#2
[img][/img] |
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caspert79
Joined: 31 Oct 2010
Posts: 3112
Location: The Netherlands
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| Posted: Sat Jul 20, 2024 12:13 pm Post subject: Re: Thanks a lot! |
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caspert79 wrote:
| stevemark wrote: |
| ghost2000 wrote: |
| I have a Yashica DSB 50mm F1.9.And I want to make a video of it.Your comments helps me a lot!(๑ơ ₃ ơ)♥ |
If you want to make a video about it, you should use the lens yourself, shooting in different situations, and compare it with other lenses. If you cannot report your own findings your video may not be convincing ...
S |
Of course you are in charge, but I often test center- and corner performance @ infinity @ different apertures (for landscape purpose), and then maybe central sharpness & bokeh at close distance subject. A comparison with another well known vintage lens is probably most interesting for most people. |
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ghost2000
Joined: 16 Jul 2024
Posts: 5
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| Posted: Sun Jul 21, 2024 6:08 am Post subject: Thanks your advice! |
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ghost2000 wrote:
I don't have other old manual-focus-lens to compare.And I use my mobile to make video.I haven't enough skill to add it in my video(ಥ﹏ಥ) |
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