| View previous topic :: View next topic |
| Author |
Message |
std
Joined: 09 Feb 2010
Posts: 1827
Location: Bulgaria
|
 Posted: Tue May 03, 2011 7:49 am Post subject: Nex/M42 focusing helicoids on ebay |
 |
|
std wrote:
There are 3 sizes available and not exactly cheap.
Maybe i will get one, just have to figure out which size and have some spare $$$. 
14.7 - 21.7 MM Click here to see on Ebay
18.2 - 32.2 MM Click here to see on Ebay
21.8 - 42.8 MM Click here to see on Ebay
_________________
Stefan
My lens list:
SLR MD: Rokkor 1,7/50 Exakta: Kilfitt-Makro-Kilar E 3.5/4cm; CZJ 2/50 Pancolar;M42: CZJ 2.8/50 Tessar; Mir-1B 2.8/37; Jupiter-9 2/85 T-mount: Tamron 5.9/200; Tamron 6.9/300; Tamron 7.5/400 C-mount: Cosmicar 1.8/50 Y/S: Sun 3.5/38-90, Sun 4/70-210 RF Contax RF: Jupiter-8 2/50; Contax G:CZ 2,8/21 Biogon T; CZ 2,8/28 Biogon T; CZ 2/35 Planar T; CZ 2/45 Planar T; CZ 2,8/90 Sonnar T |
|
| Back to top |
|
 |
Attila
Joined: 24 Feb 2007
Posts: 57849
Location: Hungary
Expire: 2025-11-18
|
| Posted: Tue May 03, 2011 8:34 pm Post subject: |
|
|
Attila wrote:
Wait with purchase , our member Calvin83 will organize a helicoid group buy.
Read this ...
http://forum.mflenses.com/how-to-determine-the-length-of-a-needed-helicoid-t23791.html
_________________
-------------------------------
Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
|
|
| Back to top |
|
|
visualopsins
Joined: 05 Mar 2009
Posts: 10543
Location: California
Expire: 2025-04-11
|
| Posted: Tue May 03, 2011 9:18 pm Post subject: |
|
|
visualopsins wrote:
These are M42-NEX adapters with built-in focus helicoid.
But regular M42 helicoids can attach to M42-NEX adapter. Is price better?
_________________
☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ 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)
|
|
| Back to top |
|
|
Attila
Joined: 24 Feb 2007
Posts: 57849
Location: Hungary
Expire: 2025-11-18
|
| Posted: Tue May 03, 2011 11:03 pm Post subject: |
|
|
Attila wrote:
| visualopsins wrote: |
These are M42-NEX adapters with built-in focus helicoid.
But regular M42 helicoids can attach to M42-NEX adapter. Is price better? |
Hard to find any new Chinese made one under 100 USD at least I don't know any.
_________________
-------------------------------
Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
|
|
| Back to top |
|
|
std
Joined: 09 Feb 2010
Posts: 1827
Location: Bulgaria
|
| Posted: Wed May 04, 2011 6:28 am Post subject: |
|
|
std wrote:
The problem with M42/Nex adapter + M42/M42 helicoid is that the adapter is very thick. If you need to mount a lens with shorter register it won't work. Anyway the prices of M42/Nex helicoids are similar for those M42/M42 helicoids.
_________________
Stefan
My lens list:
SLR MD: Rokkor 1,7/50 Exakta: Kilfitt-Makro-Kilar E 3.5/4cm; CZJ 2/50 Pancolar;M42: CZJ 2.8/50 Tessar; Mir-1B 2.8/37; Jupiter-9 2/85 T-mount: Tamron 5.9/200; Tamron 6.9/300; Tamron 7.5/400 C-mount: Cosmicar 1.8/50 Y/S: Sun 3.5/38-90, Sun 4/70-210 RF Contax RF: Jupiter-8 2/50; Contax G:CZ 2,8/21 Biogon T; CZ 2,8/28 Biogon T; CZ 2/35 Planar T; CZ 2/45 Planar T; CZ 2,8/90 Sonnar T |
|
| Back to top |
|
|
koji
Joined: 21 Jul 2008
Posts: 2106
Location: Hiroshima, Japan
Expire: 2012-12-27
|
| Posted: Wed May 04, 2011 1:03 pm Post subject: |
|
|
koji wrote:
I could not find a very thin M42->NEX converter, so I made a hole in
the NEX body cap to fit M42->M42 helicoid. This is quite usable, but
the problem is its mechanical strength is not great. Someone in future
may make this thin adapter such as M42->F mount converter (1mm thick).
M42->M42 helicoid is more useful for me, and more versatile. I also found
Nikon F->micro 4/3 converter (non focus adapter). like this>
http://www.pbase.com/kkawakami/image/124972053
This one is not too thick, and nikon has many ext. tubes, and with the above
M42->F converter you can also use M42 helicoid together.
You can find an L-mount to M42 converter (1mm thick) too.
_________________
Our Home Page has 18,200 photos in 575 directories today.
Lenses: https://www.pbase.com/kkawakami/top_level_my_lenses |
|
| Back to top |
|
|
visualopsins
Joined: 05 Mar 2009
Posts: 10543
Location: California
Expire: 2025-04-11
|
| Posted: Wed May 04, 2011 3:59 pm Post subject: |
|
|
visualopsins wrote:
M42 Asahi Helicoid ~15-23mm BIN GBP49
Click here to see on Ebay
_________________
☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ 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)
|
|
| Back to top |
|
|
std
Joined: 09 Feb 2010
Posts: 1827
Location: Bulgaria
|
| Posted: Wed May 04, 2011 5:05 pm Post subject: |
|
|
std wrote:
Is it m42-m42 ?
_________________
Stefan
My lens list:
SLR MD: Rokkor 1,7/50 Exakta: Kilfitt-Makro-Kilar E 3.5/4cm; CZJ 2/50 Pancolar;M42: CZJ 2.8/50 Tessar; Mir-1B 2.8/37; Jupiter-9 2/85 T-mount: Tamron 5.9/200; Tamron 6.9/300; Tamron 7.5/400 C-mount: Cosmicar 1.8/50 Y/S: Sun 3.5/38-90, Sun 4/70-210 RF Contax RF: Jupiter-8 2/50; Contax G:CZ 2,8/21 Biogon T; CZ 2,8/28 Biogon T; CZ 2/35 Planar T; CZ 2/45 Planar T; CZ 2,8/90 Sonnar T |
|
| Back to top |
|
|
visualopsins
Joined: 05 Mar 2009
Posts: 10543
Location: California
Expire: 2025-04-11
|
| Posted: Fri May 06, 2011 9:47 pm Post subject: |
|
|
visualopsins wrote:
yes, asahi unit is M42 female to M42 male.
_________________
☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ 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)
|
|
| Back to top |
|
|
dickb
Joined: 04 Apr 2008
Posts: 821
|
| Posted: Mon May 09, 2011 6:10 pm Post subject: |
|
|
dickb wrote:
| koji wrote: |
I could not find a very thin M42->NEX converter, so I made a hole in
the NEX body cap to fit M42->M42 helicoid. This is quite usable, but
the problem is its mechanical strength is not great. Someone in future
may make this thin adapter such as M42->F mount converter (1mm thick).
|
I've got a thin M42 to NEX adapter of sorts:
Click here to see on Ebay.de
It's a C mount adapter with an extra M42 thread - I got it because it is the widest C mount adapter I could find, it fits my unmodified C mount Tevidons. I can put my M42 helicoids and an M39-M42 adapter and mount most of my weird and wonderful M39 lenses and get infinity focus. Exceptions I found so far are the Componon 28/4 (I may be able to mount it recessed far enough to get infinity) and the Computar dL 55/1.9.
The one major disadvantage of this adapter is its 25mm C mount acts as a baffle. This is less of a problem with most slow enlarging lenses, but a big one for the Nikkor-O 55/1.2. I could Dremel out the C mount, but then my Tevidons won't fit anymore.. |
|
| Back to top |
|
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
|
Search
Memberlist
Register
Profile
Log in to check your private messages
Log in
