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Seele
Joined: 17 Apr 2009 Posts: 741 Location: Sydney Australia
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Posted: Fri May 08, 2009 8:22 pm Post subject: |
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Seele wrote:
T mount screw on the camera end might allow for greater flexibility? |
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my_photography
Joined: 03 Nov 2008 Posts: 2772 Location: Pearl of the Orient
Expire: 2016-12-25
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Posted: Sat May 09, 2009 4:02 am Post subject: |
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my_photography wrote:
Sorry to ask this question but what is the advantage of helicoid as compared to extension tubes? Different purposes? _________________
Zeiss: CJZ Flektogon 20/2.8, CJZ Flektogon 20/4, , CJZ Pentacon 29/2.8, CJZ Flektogon 35/2.4, CJZ Pancolar 50/1.8, Tessar 50/2.8, Biotar 7.5cm/1.5, CJZ Pancolar 80/1.8, CJZ Sonnar 135/3.5, CJZ Pentacon 135/2.8 CJZ Sonnar 200/2.8
Other Germany: Meyer Primoplan 50/1.8, Meyer Trioplan 100/2.8
Takumar: SMC 50/1.4 Super Tak 55/2, Super Tak 85/1.9, S-M-C 135/3.5, Super Tak 150/4
Russian: Zenith 16/2.8, Mir-24M 2/35, Volna-9 50/2.8, Helios 44M (58/2), Helios 44M-3 MC (58/2), Helios 40 (85/1.5), Tair 11A (135/2.8 )
Others: Sears 28/2.8, Sankor 35/2.8, Enna M�nchen Tele-Ennalyt 135/3.5
Zoom Sigma Zoom 28-85/3.5-4.5
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Jieffe
Joined: 04 Nov 2007 Posts: 754 Location: Belgium
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Posted: Sat May 09, 2009 7:15 am Post subject: |
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Jieffe wrote:
my_photography wrote: |
Sorry to ask this question but what is the advantage of helicoid as compared to extension tubes? Different purposes? |
The helicoid is the macro equivalent of a zoom lens compared to .primes. You don't need to swap tubes to change magnification. |
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my_photography
Joined: 03 Nov 2008 Posts: 2772 Location: Pearl of the Orient
Expire: 2016-12-25
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Posted: Sat May 09, 2009 8:19 am Post subject: |
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my_photography wrote:
Jieffe wrote: |
The helicoid is the macro equivalent of a zoom lens compared to .primes. You don't need to swap tubes to change magnification. |
So this is meant for macro shooting only? Can I shoot till infinity? _________________
Zeiss: CJZ Flektogon 20/2.8, CJZ Flektogon 20/4, , CJZ Pentacon 29/2.8, CJZ Flektogon 35/2.4, CJZ Pancolar 50/1.8, Tessar 50/2.8, Biotar 7.5cm/1.5, CJZ Pancolar 80/1.8, CJZ Sonnar 135/3.5, CJZ Pentacon 135/2.8 CJZ Sonnar 200/2.8
Other Germany: Meyer Primoplan 50/1.8, Meyer Trioplan 100/2.8
Takumar: SMC 50/1.4 Super Tak 55/2, Super Tak 85/1.9, S-M-C 135/3.5, Super Tak 150/4
Russian: Zenith 16/2.8, Mir-24M 2/35, Volna-9 50/2.8, Helios 44M (58/2), Helios 44M-3 MC (58/2), Helios 40 (85/1.5), Tair 11A (135/2.8 )
Others: Sears 28/2.8, Sankor 35/2.8, Enna M�nchen Tele-Ennalyt 135/3.5
Zoom Sigma Zoom 28-85/3.5-4.5
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my_photography
Joined: 03 Nov 2008 Posts: 2772 Location: Pearl of the Orient
Expire: 2016-12-25
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Posted: Sat May 09, 2009 8:23 am Post subject: |
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my_photography wrote:
hk300 wrote: |
(other screw type are also available)
Canon FD-M42
Minolta AF-M42
ContaxC/Y-M42
Tamron-M42
Nikon-M42
and i may be able to produce or source other ones. |
Does this mean I will be able to mount my Minolta lens to Canon bodies? (Minolta lens to helicoid M42 and M42-Canon adapter)? Also, does it mean I can now use Contax C/Y lens on my Minolta/Sony body? _________________
Zeiss: CJZ Flektogon 20/2.8, CJZ Flektogon 20/4, , CJZ Pentacon 29/2.8, CJZ Flektogon 35/2.4, CJZ Pancolar 50/1.8, Tessar 50/2.8, Biotar 7.5cm/1.5, CJZ Pancolar 80/1.8, CJZ Sonnar 135/3.5, CJZ Pentacon 135/2.8 CJZ Sonnar 200/2.8
Other Germany: Meyer Primoplan 50/1.8, Meyer Trioplan 100/2.8
Takumar: SMC 50/1.4 Super Tak 55/2, Super Tak 85/1.9, S-M-C 135/3.5, Super Tak 150/4
Russian: Zenith 16/2.8, Mir-24M 2/35, Volna-9 50/2.8, Helios 44M (58/2), Helios 44M-3 MC (58/2), Helios 40 (85/1.5), Tair 11A (135/2.8 )
Others: Sears 28/2.8, Sankor 35/2.8, Enna M�nchen Tele-Ennalyt 135/3.5
Zoom Sigma Zoom 28-85/3.5-4.5
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kds315*
Joined: 12 Mar 2008 Posts: 16497 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Sat May 09, 2009 11:26 am Post subject: |
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kds315* wrote:
Jieffe wrote: |
my_photography wrote: |
Sorry to ask this question but what is the advantage of helicoid as compared to extension tubes? Different purposes? |
The helicoid is the macro equivalent of a zoom lens compared to .primes. You don't need to swap tubes to change magnification. |
I would not use the term "zoom lens" here, since it implies a variation of focal length - which it is not. It is a simple focusing device or variable extention tube which allows a change in magnification. _________________ Klaus - Admin
"S'il vient a point, me souviendra" [Thomas Bohier (1460-1523)]
http://www.macrolenses.de for macro and special lens info
http://www.pbase.com/kds315/uv_photos for UV Images and lens/filter info
https://www.flickr.com/photos/kds315/albums my albums using various lenses
http://photographyoftheinvisibleworld.blogspot.com/ my UV BLOG
http://www.travelmeetsfood.com/blog Food + Travel BLOG
https://galeriafotografia.com Architecture + Drone photography
Currently most FAV lens(es):
X80QF f3.2/80mm
Hypergon f11/26mm
ELCAN UV f5.6/52mm
Zeiss UV-Planar f4/60mm
Zeiss UV-Planar f2/62mm
Lomo Уфар-12 f2.5/41mm
Lomo Зуфар-2 f4.0/350mm
Lomo ZIKAR-1A f1.2/100mm
Nikon UV Nikkor f4.5/105mm
Zeiss UV-Sonnar f4.3/105mm
CERCO UV-VIS-NIR f1.8/45mm
CERCO UV-VIS-NIR f4.1/94mm
CERCO UV-VIS-NIR f2.8/100mm
Steinheil Quarzobjektiv f1.8/50mm
Pentax Quartz Takumar f3.5/85mm
Carl Zeiss Jena UV-Objektiv f4/60mm
NYE OPTICAL Lyman-Alpha II f1.1/90mm
NYE OPTICAL Lyman-Alpha I f2.8/200mm
COASTAL OPTICS f4/60mm UV-VIS-IR Apo
COASTAL OPTICS f4.5/105mm UV-Micro-Apo
Pentax Ultra-Achromatic Takumar f4.5/85mm
Pentax Ultra-Achromatic Takumar f5.6/300mm
Rodenstock UV-Rodagon f5.6/60mm + 105mm + 150mm
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Jieffe
Joined: 04 Nov 2007 Posts: 754 Location: Belgium
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Posted: Sat May 09, 2009 12:10 pm Post subject: |
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Jieffe wrote:
my_photography wrote: |
So this is meant for macro shooting only? Can I shoot till infinity? |
Yes, as with extension tubes. |
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Jieffe
Joined: 04 Nov 2007 Posts: 754 Location: Belgium
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Posted: Sat May 09, 2009 12:13 pm Post subject: |
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Jieffe wrote:
kds315* wrote: |
I would not use the term "zoom lens" here, since it implies a variation of focal length |
Correct. I was using "zoom" as a shortcut to "ability to change the magnification factor without swapping extension tubes". |
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Screamin Scott
Joined: 13 Oct 2007 Posts: 1014 Location: Dallas, Georgia USA
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Posted: Sat May 09, 2009 1:44 pm Post subject: |
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Screamin Scott wrote:
Kinda like a Vivitar 2x macro converter...The variable magnification factor makes something like this so much more useful as you simply turn the ring to change ratios instead of adding or subtracting tubes...Makes composition easier too... _________________ Cameras-Nikon D300, D7100,D610,FE2,FTN ,FT2,N90s, Olympus Pen EP-3 & Olympus OM-D E-M10
Nikkor AF Zooms=28-105/3.5D,28-70/3.5D,35-135/3.5, et al
Nikkor AF //50/1.8,//Nikkor MF//50/2ai,50/1.8ais 50/1.4ai,24/2.8ais,28/2.8ai,28/3.5ai,55microAis/2.8,105/2.5ai,200/4ai,300/4.5ai35-135/3.5Ais,et al
Kiron /Kino made lenses//70-210/4ai,28-105/3.2ai,30-80/3.5ai,Viv 28/2ai,35-85/2.8aiVivS1,105/2.8Ais Dine,24-48/3.8ai VivS1,50-150/3.8aiViv,28-85/2.8aiViv,100/2.8Nai Viv,70-210/3.5Nai Viv,28/2.5ai Viv Komine made Viv//24/2Ais,135/2.8aiCF,28-50/3.5ai,28-90/2.8ai Viv S1,80-200/4.5aiCosina made Viv 19/3.8 Ais...Also Sigma 24/2.8 Ais Tokina made24/2.8ai VivAF Sigma 21-35/3.5,& other lenses... A link to some of my Flickr albums...
https://www.flickr.com/photos/screaminscott/albums |
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Jieffe
Joined: 04 Nov 2007 Posts: 754 Location: Belgium
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Posted: Sat May 09, 2009 1:52 pm Post subject: |
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Jieffe wrote:
Screamin Scott wrote: |
Kinda like a Vivitar 2x macro converter... |
As a matter of fact, I made my own helicoid by removing the lenses of a vivitar macro converter. |
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my_photography
Joined: 03 Nov 2008 Posts: 2772 Location: Pearl of the Orient
Expire: 2016-12-25
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Posted: Mon May 11, 2009 5:08 am Post subject: |
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my_photography wrote:
my_photography wrote: |
hk300 wrote: |
(other screw type are also available)
Canon FD-M42
Minolta AF-M42
ContaxC/Y-M42
Tamron-M42
Nikon-M42
and i may be able to produce or source other ones. |
Does this mean I will be able to mount my Minolta lens to Canon bodies? (Minolta lens to helicoid M42 and M42-Canon adapter)? Also, does it mean I can now use Contax C/Y lens on my Minolta/Sony body? |
Anyone knows if this is possible?
Contax C/Y helicoid M42 then M42 to Minolta/Sony A mount?
Minolta/Sony A mount to helicoid M42 then M42 to Canon EF mount? _________________
Zeiss: CJZ Flektogon 20/2.8, CJZ Flektogon 20/4, , CJZ Pentacon 29/2.8, CJZ Flektogon 35/2.4, CJZ Pancolar 50/1.8, Tessar 50/2.8, Biotar 7.5cm/1.5, CJZ Pancolar 80/1.8, CJZ Sonnar 135/3.5, CJZ Pentacon 135/2.8 CJZ Sonnar 200/2.8
Other Germany: Meyer Primoplan 50/1.8, Meyer Trioplan 100/2.8
Takumar: SMC 50/1.4 Super Tak 55/2, Super Tak 85/1.9, S-M-C 135/3.5, Super Tak 150/4
Russian: Zenith 16/2.8, Mir-24M 2/35, Volna-9 50/2.8, Helios 44M (58/2), Helios 44M-3 MC (58/2), Helios 40 (85/1.5), Tair 11A (135/2.8 )
Others: Sears 28/2.8, Sankor 35/2.8, Enna M�nchen Tele-Ennalyt 135/3.5
Zoom Sigma Zoom 28-85/3.5-4.5
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kds315*
Joined: 12 Mar 2008 Posts: 16497 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Wed May 13, 2009 7:31 pm Post subject: |
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kds315* wrote:
Anything (nearly) is possible if you are willing to pay for it!!
I have a lot of such custom projects made over the years... _________________ Klaus - Admin
"S'il vient a point, me souviendra" [Thomas Bohier (1460-1523)]
http://www.macrolenses.de for macro and special lens info
http://www.pbase.com/kds315/uv_photos for UV Images and lens/filter info
https://www.flickr.com/photos/kds315/albums my albums using various lenses
http://photographyoftheinvisibleworld.blogspot.com/ my UV BLOG
http://www.travelmeetsfood.com/blog Food + Travel BLOG
https://galeriafotografia.com Architecture + Drone photography
Currently most FAV lens(es):
X80QF f3.2/80mm
Hypergon f11/26mm
ELCAN UV f5.6/52mm
Zeiss UV-Planar f4/60mm
Zeiss UV-Planar f2/62mm
Lomo Уфар-12 f2.5/41mm
Lomo Зуфар-2 f4.0/350mm
Lomo ZIKAR-1A f1.2/100mm
Nikon UV Nikkor f4.5/105mm
Zeiss UV-Sonnar f4.3/105mm
CERCO UV-VIS-NIR f1.8/45mm
CERCO UV-VIS-NIR f4.1/94mm
CERCO UV-VIS-NIR f2.8/100mm
Steinheil Quarzobjektiv f1.8/50mm
Pentax Quartz Takumar f3.5/85mm
Carl Zeiss Jena UV-Objektiv f4/60mm
NYE OPTICAL Lyman-Alpha II f1.1/90mm
NYE OPTICAL Lyman-Alpha I f2.8/200mm
COASTAL OPTICS f4/60mm UV-VIS-IR Apo
COASTAL OPTICS f4.5/105mm UV-Micro-Apo
Pentax Ultra-Achromatic Takumar f4.5/85mm
Pentax Ultra-Achromatic Takumar f5.6/300mm
Rodenstock UV-Rodagon f5.6/60mm + 105mm + 150mm
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Scribo
Joined: 17 Nov 2008 Posts: 19
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Posted: Thu Jun 04, 2009 4:22 am Post subject: |
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Scribo wrote:
I wonder if someone who has examined one of these helicoids can answer a question.
I have a barrel lens, 43mm outside diameter, that I would like to mount. Thye barrel isn't threaded--it's strictly smooth (it was removed from a rack-and-pinion focusing tube).
My question is how the lens is held in the helicoid. Is it screwed in, or is there some other arrangement to hold it in place? I've looked at the pics, and it's not clear to me.
Thanks for all assistance. I did ask the seller via the auction site, and got a prompt and courteous reply, which unfortunately didn't address all of my questions. |
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Shiladitya
Joined: 31 May 2008 Posts: 306 Location: New Delhi, India
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Posted: Thu Jun 11, 2009 9:39 am Post subject: |
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Shiladitya wrote:
Jieffe wrote: |
As a matter of fact, I made my own helicoid by removing the lenses of a vivitar macro converter. |
Hi Jieffe, Can you share some more details. I am dabbling with this idea for sometimes now.
Thanks _________________ Camera: 35mm SLR: Nikon F4s, Nikon FG, FE2, FM2n, FA; Pentax K1000, Spotmatic II, MZ60; Exakta Varex IIb, Olympus OM1n;
MF TLR: Yashica Mat 124G, Yashica 635, Rolleiflex Automat MX EVS
35mm RF: Voigtlander Prominent, Yashica Electro GSN, Minolta Hi-Matic 7s
MF Folder: Agfa Isolette III
Digital: Canon 5DC, Canon 550D
Lenses: Nikkor- 2.8/55 Micro, 1.4/50 AIS, 1.2/55 AI, 2.8/24 AIS, 2.8/20 AIS, 4/200 AIS, 2.5/105 AIS
Pentax K: SMC 1.7/50, 2.8/24, 3.5/135, 4/200 & 4.5/80-200
M42: SMC Tak 1.8/55, SMC Tak 3.5/28, SMC Tak 3.5/135, Super Tak 4/200, Yasinon DX 1.7/50, Meyer Oreston 1.8/50
Zuiko: 1.8/50, 3.5/28
Exakta: Pancolar 2/50, Pentacon 3.5/30, Enna 4.5/240
Prominent: Ultron 2/50, Skoparon 3.5/35, Dynaon 4.5/100 |
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Jieffe
Joined: 04 Nov 2007 Posts: 754 Location: Belgium
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Posted: Thu Jun 11, 2009 11:17 am Post subject: |
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Jieffe wrote:
Shiladitya wrote: |
Jieffe wrote: |
As a matter of fact, I made my own helicoid by removing the lenses of a vivitar macro converter. |
Hi Jieffe, Can you share some more details. I am dabbling with this idea for sometimes now.
Thanks |
I had for a long time a Kiron-made "Vivitar 2x macro focusing teleconverter" in Pentax K mount. It was supposed to be better (or "less worse") than other converters, having 7 MC elements.
As I never used it, I decided to remove all the lenses (after disassembly and a bit of dremeling if I remember correctly).
I now have a variable extension ring going from 4.4cm to 6cm fully extended.
Closed :
Extended :
Inside : (ignore the glued mount, I misplaced the original mount and used a M42-K converter )
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Attila
Joined: 24 Feb 2007 Posts: 57839 Location: Hungary
Expire: 2021-11-18
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Posted: Thu Jun 11, 2009 11:28 am Post subject: |
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Attila wrote:
This is a good idea , especially if you can get on bargain price. I have two copies from this converter and I think pretty good one. _________________ -------------------------------
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
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Shiladitya
Joined: 31 May 2008 Posts: 306 Location: New Delhi, India
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Posted: Thu Jun 11, 2009 4:40 pm Post subject: |
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Shiladitya wrote:
Jieffe wrote: |
Shiladitya wrote: |
Jieffe wrote: |
As a matter of fact, I made my own helicoid by removing the lenses of a vivitar macro converter. |
Hi Jieffe, Can you share some more details. I am dabbling with this idea for sometimes now.
Thanks |
I had for a long time a Kiron-made "Vivitar 2x macro focusing teleconverter" in Pentax K mount. It was supposed to be better (or "less worse") than other converters, having 7 MC elements.
As I never used it, I decided to remove all the lenses (after disassembly and a bit of dremeling if I remember correctly).
I now have a variable extension ring going from 4.4cm to 6cm fully extended. |
This is great... I have been eyeing this converter (7 MC element) in Nikon mount. Its works out much cheaper than the helicoid tubes (with different extension lengths off course)
How do I find out the focus distance that it will give me for my EL nikkor 50/2.8 (both with the glass elements i.e. 2X FL and without the glass elemets)
Anyway I think I will try this before I choose to buy the more expensive helicoid tubes.
Jieffe, does removing the glass elements make this a permanent variable extension or the glasses can be fit ince again... I mean is the operation of removing the glasses too complex?
Quote: |
This is a good idea , especially if you can get on bargain price. I have two copies from this converter and I think pretty good one. |
Yes Atilla, I am looking for one at an affordable price. _________________ Camera: 35mm SLR: Nikon F4s, Nikon FG, FE2, FM2n, FA; Pentax K1000, Spotmatic II, MZ60; Exakta Varex IIb, Olympus OM1n;
MF TLR: Yashica Mat 124G, Yashica 635, Rolleiflex Automat MX EVS
35mm RF: Voigtlander Prominent, Yashica Electro GSN, Minolta Hi-Matic 7s
MF Folder: Agfa Isolette III
Digital: Canon 5DC, Canon 550D
Lenses: Nikkor- 2.8/55 Micro, 1.4/50 AIS, 1.2/55 AI, 2.8/24 AIS, 2.8/20 AIS, 4/200 AIS, 2.5/105 AIS
Pentax K: SMC 1.7/50, 2.8/24, 3.5/135, 4/200 & 4.5/80-200
M42: SMC Tak 1.8/55, SMC Tak 3.5/28, SMC Tak 3.5/135, Super Tak 4/200, Yasinon DX 1.7/50, Meyer Oreston 1.8/50
Zuiko: 1.8/50, 3.5/28
Exakta: Pancolar 2/50, Pentacon 3.5/30, Enna 4.5/240
Prominent: Ultron 2/50, Skoparon 3.5/35, Dynaon 4.5/100 |
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Jieffe
Joined: 04 Nov 2007 Posts: 754 Location: Belgium
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Posted: Thu Jun 11, 2009 8:29 pm Post subject: |
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Jieffe wrote:
Shiladitya wrote: |
How do I find out the focus distance that it will give me for my EL nikkor 50/2.8 (both with the glass elements i.e. 2X FL and without the glass elemets) |
I dont have the glass elements anymore, so can't tell you. With a 50mm set to infinity, the focus distance is about 4-5 cm depending of the extension.
The real-life object I can photography at max extension is 2cm wide,
Quote: |
Jieffe, does removing the glass elements make this a permanent variable extension or the glasses can be fit ince again... I mean is the operation of removing the glasses too complex? |
Well, I had to break a few pieces to remove the glasses. Maybe someone more careful could disassemble the converter and keep the ability to re-assemble it later ... not sure about that one. |
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Shiladitya
Joined: 31 May 2008 Posts: 306 Location: New Delhi, India
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Posted: Fri Jun 12, 2009 9:54 am Post subject: |
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Shiladitya wrote:
Jieffe wrote: |
Shiladitya wrote: |
How do I find out the focus distance that it will give me for my EL nikkor 50/2.8 (both with the glass elements i.e. 2X FL and without the glass elemets) |
I dont have the glass elements anymore, so can't tell you. With a 50mm set to infinity, the focus distance is about 4-5 cm depending of the extension.
The real-life object I can photography at max extension is 2cm wide,
Quote: |
Jieffe, does removing the glass elements make this a permanent variable extension or the glasses can be fit ince again... I mean is the operation of removing the glasses too complex? |
Well, I had to break a few pieces to remove the glasses. Maybe someone more careful could disassemble the converter and keep the ability to re-assemble it later ... not sure about that one. |
Great Thanks. I think for now this is the way to go for me. _________________ Camera: 35mm SLR: Nikon F4s, Nikon FG, FE2, FM2n, FA; Pentax K1000, Spotmatic II, MZ60; Exakta Varex IIb, Olympus OM1n;
MF TLR: Yashica Mat 124G, Yashica 635, Rolleiflex Automat MX EVS
35mm RF: Voigtlander Prominent, Yashica Electro GSN, Minolta Hi-Matic 7s
MF Folder: Agfa Isolette III
Digital: Canon 5DC, Canon 550D
Lenses: Nikkor- 2.8/55 Micro, 1.4/50 AIS, 1.2/55 AI, 2.8/24 AIS, 2.8/20 AIS, 4/200 AIS, 2.5/105 AIS
Pentax K: SMC 1.7/50, 2.8/24, 3.5/135, 4/200 & 4.5/80-200
M42: SMC Tak 1.8/55, SMC Tak 3.5/28, SMC Tak 3.5/135, Super Tak 4/200, Yasinon DX 1.7/50, Meyer Oreston 1.8/50
Zuiko: 1.8/50, 3.5/28
Exakta: Pancolar 2/50, Pentacon 3.5/30, Enna 4.5/240
Prominent: Ultron 2/50, Skoparon 3.5/35, Dynaon 4.5/100 |
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kds315*
Joined: 12 Mar 2008 Posts: 16497 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Fri Oct 02, 2009 11:13 am Post subject: |
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kds315* wrote:
Any news on the availability + current price of these helicoids + adaptors Alex?? _________________ Klaus - Admin
"S'il vient a point, me souviendra" [Thomas Bohier (1460-1523)]
http://www.macrolenses.de for macro and special lens info
http://www.pbase.com/kds315/uv_photos for UV Images and lens/filter info
https://www.flickr.com/photos/kds315/albums my albums using various lenses
http://photographyoftheinvisibleworld.blogspot.com/ my UV BLOG
http://www.travelmeetsfood.com/blog Food + Travel BLOG
https://galeriafotografia.com Architecture + Drone photography
Currently most FAV lens(es):
X80QF f3.2/80mm
Hypergon f11/26mm
ELCAN UV f5.6/52mm
Zeiss UV-Planar f4/60mm
Zeiss UV-Planar f2/62mm
Lomo Уфар-12 f2.5/41mm
Lomo Зуфар-2 f4.0/350mm
Lomo ZIKAR-1A f1.2/100mm
Nikon UV Nikkor f4.5/105mm
Zeiss UV-Sonnar f4.3/105mm
CERCO UV-VIS-NIR f1.8/45mm
CERCO UV-VIS-NIR f4.1/94mm
CERCO UV-VIS-NIR f2.8/100mm
Steinheil Quarzobjektiv f1.8/50mm
Pentax Quartz Takumar f3.5/85mm
Carl Zeiss Jena UV-Objektiv f4/60mm
NYE OPTICAL Lyman-Alpha II f1.1/90mm
NYE OPTICAL Lyman-Alpha I f2.8/200mm
COASTAL OPTICS f4/60mm UV-VIS-IR Apo
COASTAL OPTICS f4.5/105mm UV-Micro-Apo
Pentax Ultra-Achromatic Takumar f4.5/85mm
Pentax Ultra-Achromatic Takumar f5.6/300mm
Rodenstock UV-Rodagon f5.6/60mm + 105mm + 150mm
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patrickh
Joined: 23 Aug 2007 Posts: 8551 Location: Oregon
Expire: 2011-11-18
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Posted: Fri Oct 02, 2009 2:52 pm Post subject: |
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patrickh wrote:
+1 Alex
patrickh _________________ DSLR: Nikon D300 Nikon D200 Nex 5N
MF Zooms: Kiron 28-85/3.5, 28-105/3.2, 75-150/3.5, Nikkor 50-135/3.5 AIS // MF Primes: Nikkor 20/4 AI, 24/2 AI, 28/2 AI, 28/2.8 AIS, 28/3.5 AI, 35/1.4 AIS, 35/2 AIS, 35/2.8 PC, 45/2.8 P, 50/1.4 AIS, 50/1.8 AIS, 50/2 AI, 55/2.8 AIS micro, 55/3.5 AI micro, 85/2 AI, 100/2,8 E, 105/1,8 AIS, 105/2,5 AIS, 135/2 AIS, 135/2.8 AIS, 200/4 AI, 200/4 AIS micro, 300/4.5 AI, 300/4.5 AI ED, Arsat 50/1.4, Kiron 28/2, Vivitar 28/2.5, Panagor 135/2.8, Tamron 28/2.5, Tamron 90/2.5 macro, Vivitar 90/2.5 macro (Tokina) Voigtlander 90/3.5 Vivitar 105/2.5 macro (Kiron) Kaleinar 100/2.8 AI Tamron 135/2.5, Vivitar 135/2.8CF, 200/3.5, Tokina 400/5,6
M42: Vivitar 28/2.5, Tamron 28/2.5, Formula5 28/2.8, Mamiya 28/2.8, Pentacon 29/2.8, Flektogon 35/2.4, Flektogon 35/2.8, Takumar 35/3.5, Curtagon 35/4, Takumar 50/1.4, Volna-6 50/2.8 macro, Mamiya 50/1.4, CZJ Pancolar 50/1,8, Oreston 50/1.8, Takumar 50/2, Industar 50/3.5, Sears 55/1.4, Helios 58/2, Jupiter 85/2, Helios 85/1.5, Takumar 105/2.8, Steinheil macro 105/4.5, Tamron 135/2.5, Jupiter 135/4, CZ 135/4, Steinheil Culminar 135/4,5, Jupiter 135/3.5, Takumar 135/3.5, Tair 135/2.8, Pentacon 135/2.8, CZ 135/2.8, Taika 135/3.5, Takumar 150/4, Jupiter 200/4, Takumar 200/4
Exakta: Topcon 100/2.8(M42), 35/2.8, 58/1.8, 135/2.8, 135/2.8 (M42), Kyoei Acall 135/3.5
C/Y: Yashica 28/2.8, 50/1.7, 135/2.8, Zeiss Planar 50/1.4, Distagon 25/2.8
Hexanon: 28/3.5, 35/2.8, 40/1.8, 50/1.7, 52/1.8, 135/3.2, 135/3.5, 35-70/3.5, 200/3.5
P6 : Mir 38 65/3.5, Biometar 80/2.8, Kaleinar 150/2.8, Sonnar 180/2.8
Minolta SR: 28/2.8, 28/3.5, 35/2.8, 45/2, 50/2, 58/1.4, 50/1.7, 135/2.8, 200/3.5
RF: Industar 53/2.8, Jupiter 8 50/2
Enlarg: Rodagon 50/5,6, 80/5,6, 105/5.6, Vario 44-52/4, 150/5.6 180/5.6 El Nikkor 50/2,8,63/2.8,75/4, 80/5,6, 105/5.6, 135/5.6 Schneider 60/5.6, 80/5.6, 80/4S,100/5.6S,105/5.6,135/5.6, 135/5.6S, 150/5.6S, Leica 95/4 |
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garjor
Joined: 25 Dec 2009 Posts: 2 Location: Spain
Expire: 2019-01-30
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Posted: Fri Dec 25, 2009 10:43 pm Post subject: M42 helicoid to focus MTO 1000mm |
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garjor wrote:
May I use one of those M42-M42 helicoids as a focuser for a MTO 1000mm mirror lens?
Now it is a pain to move the whole barrel but I do not know if one of those helicoid will allow micro focusing or not
I know I have to allow past infinity focus to compensate the longer lens-sensor distance (it is explaided here )
I do not want to buy one if I do not know it it works a I expect or not
Regards
Jorge
PD After several tries I managed to put the URL
Last edited by garjor on Sat Dec 26, 2009 3:09 pm; edited 6 times in total |
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Attila
Joined: 24 Feb 2007 Posts: 57839 Location: Hungary
Expire: 2021-11-18
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Posted: Fri Dec 25, 2009 10:52 pm Post subject: Re: M42 helicoid to focus MTO 1000mm |
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Attila wrote:
garjor wrote: |
May I use one of those M42-M42 helicoids as a focuser for a MTO 1000mm mirror lens?
Now it is a pain to move the whole barrel but I do not know if one of those helicoid will allow micro focusing or not
I know I have to allow past infinity focus to compensate the longer lens-sensor distance (it is explaided here http://coldlake0.tripod.com/rubinarT.html[/url])
I do not want to buy one if I do not know it it works a I expect or not
Regards
Jorge |
_________________ -------------------------------
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
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garjor
Joined: 25 Dec 2009 Posts: 2 Location: Spain
Expire: 2019-01-30
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Posted: Mon Jan 04, 2010 7:17 pm Post subject: |
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garjor wrote:
I will ask a different way:
If you turn 360 degrees the ring, how many milimeters does it extend?
Always the same amount or it depends of the whole lenght or the helicoid?
Regards |
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no-X
Joined: 19 Jul 2008 Posts: 2495 Location: Budejky, Czech Republic
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Posted: Mon Jan 04, 2010 7:50 pm Post subject: |
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no-X wrote:
cca 270 degrees extends the helicoid fully _________________ (almost) complete list of Helios lenses |
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