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Scheimpflug
Joined: 06 Feb 2010
Posts: 1888
Location: New Zealand / USA
Expire: 2011-11-18
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 Posted: Tue Jun 15, 2010 12:12 pm Post subject: Pentax Variable Close-Up Ring (extension tube with helicoid) |
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Scheimpflug wrote:
I'm going to be needing a short adjustable tube as a focusing device, and came across the Pentax "variable close-up ring".
Here are a few photos from http://whitemetal.com/pentax/ap_het/index.htm
| http://whitemetal.com/pentax/ap_het/index.htm wrote: |
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This would seem to be exactly what I need, but I can't find any for sale to get a price reference. Google gives very few results, and ebay global doesn't list a single one! 
Were these not a popular accessory? Have they all been snapped up by the collectors? 
_________________
Sigma DP1, Nikon D40 (hers  ), Polaroid x530, Pentax P30t, Pentax P50, (P30t/P50 K-A to Nikon F body mount conversion)
Nikon: 18-55/3.5-5.6 "G ED II DX" (F) Soligor: 28/2.8 (FL->F converted), 135/3.5 (F), 3x TC (F, modified) Kalimar: 28-85/3.5 (F)
Vivitar: 70-210/2.8-4.0 Version 3 (F), Tele 500/6.3 Preset (F), 19/3.8 (F) Minolta: 300/5.6 (SR/MC/MD pending F conversion)
Tamron: 28/2.8 (Adaptall) Panagor: 28/2.5 (FD) Aetna: 300/5.6 (F) Osawa: MC 28/2.8 (F)
Vintage Lenses: Dallmeyer: 1940s A.M. 14in 356mm f4 (ULF->M42) 1930s Adon Telephoto Taylor, Taylor & Hobson: 1880s Rapid Rectilinear 8 1/2 x 6 1/2 11.31in f/8 (LF->?)
Parts Lenses: Nikon 35-135/3.5-4.5 (F), Sigma 70-210/4.5 (F), Nikon 50/1.8 Series E (F)
Last edited by Scheimpflug on Tue Jun 15, 2010 12:42 pm; edited 1 time in total |
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Jieffe
Joined: 04 Nov 2007
Posts: 754
Location: Belgium
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| Posted: Tue Jun 15, 2010 12:27 pm Post subject: |
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Jieffe wrote:
Attila (this forum owner) is selling what you need : Click here to see on Ebay |
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dickb
Joined: 04 Apr 2008
Posts: 821
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| Posted: Tue Jun 15, 2010 1:23 pm Post subject: |
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dickb wrote:
The Pentax M42 comes in two variants, one called "helicoid extension tube", the other "variable close-up ring". I've got both and have not noticed any difference between them apart from the lettering. They are sought after both by collectors and users, very useful indeed. I haven't used the modern chinese helicoid rings, so I can't compare those two. The Pentax is definitely sturdier and smoother than the Zörkendorfer Mini Makro Schnecke. The only Pentax I come across now is rather expensive:
Click here to see on Ebay |
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calvin83
Joined: 12 Apr 2009
Posts: 7555
Location: Hong Kong
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| Posted: Tue Jun 15, 2010 2:22 pm Post subject: |
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calvin83 wrote:
I have not try the pentax one but i think the quality of my chinese helicoid rings are quiet good. |
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CarbonR
Joined: 31 Dec 2008
Posts: 1969
Location: Clermont-Ferrand, France
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| Posted: Tue Jun 15, 2010 3:25 pm Post subject: |
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CarbonR wrote:
I got mine for something like 55€ with case and manual, prices are generally between 60-90€
_________________
Cameras : Canon 5D, Pentax K100D, Pentax 6x7, Spotmatic
Lenses : 15mm to 1000mm (24x36)
My websites : [FR & ENG]Takumar - the eyes of the Spotmatic : info about all Takumar lenses // Kogaku - My photo site
I am selling : Takumar lenses and rare Pentax bodies, pm me if you're interested in something [MFLenses feed-back]
Information on Takumar lenses with samples :
Wide angle : Takumar 15/3.5 15mm, Takumar 17/4 17mm, Takumar 18/11 18mm, Takumar 20/4.5 20mm, Takumar 24/3.5 24mm, Takumar 28/3.5 V1 28mm, Takumar 28/3.5 V2 28mm, Takumar 35/2 V1 35mm, Takumar 35/2 V2 35mm, Takumar 35/2.3 35mm, Takumar 35/3.5 35mm, Takumar 35/4 35mm
Standard : Takumar 50/1.4 V1 50mm, Takumar 50/1.4 V2 50mm, Takumar 50/3.5 50mm, Takumar 50/4 50mm, Takumar 55/2 55/1.8 55mm, Takumar 55/2.2 V1 55mm, Takumar 55/2.2 V2 55mm, Takumar 58/2 58mm, Takumar 58/2.4 58mm
Short tele : Takumar 83/1.9 83mm, Takumar 85/1.8 85/1.9 85mm, Takumar 85/1.8 85mm, Takumar 100/2 100mm, Takumar 100/3.5 100mm, Takumar 100/4 100mm, Takumar 105/2.8 V1 105mm, Takumar 105/2.8 V2 105mm, Takumar 120/2.8 120mm
Telephoto : Takumar 135/2.5 V1 135mm, Takumar 135/2.5 V2 135mm, Takumar 135/3.5 V1 135mm, Takumar 135/3.5 V2 135mm, Takumar 150/4 V1 150mm, Takumar 150/4 V2 150mm
Long tele : Takumar 200/3.5 200mm, Takumar 200/4 200mm, Takumar 200/5.6 200mm, Takumar 300/4 V1 300mm, Takumar 300/4 V2 300mm, Takumar 300/4 V3 300mm, Takumar 300/6.3 300mm, Takumar 400/5.6 400mm, Takumar 500/4.5 500mm, Takumar 500/5 500mm, Takumar 1000/8 V1 1000mm, Takumar 1000/8 V2 1000mm
Zoom : Zoom-Takumar 45~125/4 , Zoom-Takumar 70~150/4.5 , Zoom-Takumar 85~210/4.5 , Zoom-Takumar 135~600/6.7
Achromatic : Ultra-Achromatic-Takumar 85/4.5 , Ultra-Achromatic-Takumar 300/5.6 300mm |
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Scheimpflug
Joined: 06 Feb 2010
Posts: 1888
Location: New Zealand / USA
Expire: 2011-11-18
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| Posted: Sun Jun 20, 2010 5:52 am Post subject: |
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Scheimpflug wrote:
Thanks for the information, everyone. I guess I will just have to keep looking and hopefully find one that the collectors have missed.
| dickb wrote: |
| The Pentax is definitely sturdier and smoother than the Zörkendorfer Mini Makro Schnecke. |
I haven't heard of that one... Do you have any photos or information about it?
_________________
Sigma DP1, Nikon D40 (hers ), Polaroid x530, Pentax P30t, Pentax P50, (P30t/P50 K-A to Nikon F body mount conversion)
Nikon: 18-55/3.5-5.6 "G ED II DX" (F) Soligor: 28/2.8 (FL->F converted), 135/3.5 (F), 3x TC (F, modified) Kalimar: 28-85/3.5 (F)
Vivitar: 70-210/2.8-4.0 Version 3 (F), Tele 500/6.3 Preset (F), 19/3.8 (F) Minolta: 300/5.6 (SR/MC/MD pending F conversion)
Tamron: 28/2.8 (Adaptall) Panagor: 28/2.5 (FD) Aetna: 300/5.6 (F) Osawa: MC 28/2.8 (F)
Vintage Lenses: Dallmeyer: 1940s A.M. 14in 356mm f4 (ULF->M42) 1930s Adon Telephoto Taylor, Taylor & Hobson: 1880s Rapid Rectilinear 8 1/2 x 6 1/2 11.31in f/8 (LF->?)
Parts Lenses: Nikon 35-135/3.5-4.5 (F), Sigma 70-210/4.5 (F), Nikon 50/1.8 Series E (F) |
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dickb
Joined: 04 Apr 2008
Posts: 821
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| Posted: Sun Jun 20, 2010 7:36 pm Post subject: |
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dickb wrote:
http://www.zoerk.com/pages/p_mima.htm
It has a double helicoid, long travel (26 to 60mm total length), very lightweight, not as precise to adjust compared to the Pentax and it rotates when focussing. |
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Scheimpflug
Joined: 06 Feb 2010
Posts: 1888
Location: New Zealand / USA
Expire: 2011-11-18
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| Posted: Sun Jun 20, 2010 11:52 pm Post subject: |
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Scheimpflug wrote:
Interesting. Too bad it rotates, otherwise that is a very useful extension range. Do you know how much they cost?
_________________
Sigma DP1, Nikon D40 (hers ), Polaroid x530, Pentax P30t, Pentax P50, (P30t/P50 K-A to Nikon F body mount conversion)
Nikon: 18-55/3.5-5.6 "G ED II DX" (F) Soligor: 28/2.8 (FL->F converted), 135/3.5 (F), 3x TC (F, modified) Kalimar: 28-85/3.5 (F)
Vivitar: 70-210/2.8-4.0 Version 3 (F), Tele 500/6.3 Preset (F), 19/3.8 (F) Minolta: 300/5.6 (SR/MC/MD pending F conversion)
Tamron: 28/2.8 (Adaptall) Panagor: 28/2.5 (FD) Aetna: 300/5.6 (F) Osawa: MC 28/2.8 (F)
Vintage Lenses: Dallmeyer: 1940s A.M. 14in 356mm f4 (ULF->M42) 1930s Adon Telephoto Taylor, Taylor & Hobson: 1880s Rapid Rectilinear 8 1/2 x 6 1/2 11.31in f/8 (LF->?)
Parts Lenses: Nikon 35-135/3.5-4.5 (F), Sigma 70-210/4.5 (F), Nikon 50/1.8 Series E (F) |
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