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Smoli4
Joined: 01 Jul 2011 Posts: 606 Location: Haifa, Israel
Expire: 2013-06-07
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Posted: Wed Jan 04, 2012 9:43 am Post subject: An 85mm f1.2\f1 Lens Made for work with Laser equipment |
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Smoli4 wrote:
I dont know nothing about this one, only that i have adaped it so i can use it on my canon 60d.]
Got it in a junk store witch sells electronics by weight..
The lens cannot reach infinity on 60d, only if used on NEX type with closer register distance.
I would very like some help in understanding the optical formula of this lens, and comparing it to a known optical design.
Also in comparing its aperture number, i figured its gotta be more than f1.4 because it is so bright, but any instructions or tips in figuring out its brightness would be very much appreciated, and ill test it here.
I HAVE ALOT OF PICS ONCE AGAIN, so, sorry for that
here it is compared in size to Jupiter 9, and 50mm Tak:
Here Im removing the retaining ring for the BACK element/cemented elements group
this is the element
Now its side by side with the Front element group, its a huge piece of glass very thick and heavy
This is the way they are aligned inside the barrel
now i have returned all the elements back into the barrel and i want to show how i adapter this for mt EOS mount
M42 to EOS Adapter
Ready for shooting!!
I can make with no problem a Focusing Helicoid for this one, and i already have a very good idea how
Now for a few shots with this beast, i doesnt flare at all good coatings and overall good colors.
These are with shot under a mere 20W fluorescent light bulb!
Another Cyclops?!
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kds315*
Joined: 12 Mar 2008 Posts: 16626 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Wed Jan 04, 2012 10:04 am Post subject: |
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kds315* wrote:
Looks like a f-theta scan lens to me, which has a different projection that normal taking lenses.
Usually those are not color corrected, so only useful around the designed wavelength (esp. for
lasers), so they have massive CA is used with white light.
You pictures show both effects btw. _________________ 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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iangreenhalgh1
Joined: 18 Mar 2011 Posts: 15679
Expire: 2014-01-07
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Posted: Wed Jan 04, 2012 10:05 am Post subject: |
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iangreenhalgh1 wrote:
Wow, what a beautiful lens and stunning results, this is perhaps the smoothest bokeh I have seen, and it is certainly sharp in centre. Reminds me of Petzval type projector lens I have in how it renders.
I think it is a Petzval type lens, front and read cemented doublets. With the huge size, you could fit an aperture in there between the elements with some work.
_________________ I don't care who designed it, who made it or what country it comes from - I just enjoy using it! |
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Smoli4
Joined: 01 Jul 2011 Posts: 606 Location: Haifa, Israel
Expire: 2013-06-07
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Posted: Wed Jan 04, 2012 12:14 pm Post subject: |
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Smoli4 wrote:
Yes very silimar design to what you have posted Ian, and i looked up F-theta scanning lenses, and they look almost identical to this lens.
man do i wish for nex camera right now or what....
klaus about the CA, there is slight a slight hint but honestly i didnt see massive amounts and i cant see something that stands out in the pictures.
but the projection does seems unusual to normal taking lenses. i wish i could test it with further subjects.... |
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nixland
Joined: 30 Jan 2011 Posts: 577
Expire: 2012-07-29
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Posted: Wed Jan 04, 2012 3:03 pm Post subject: |
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nixland wrote:
Holy Cyclop .... 85mm f/1 ??? ... Woww .... and it looks quite OK too.
How far is the focus distance using 60D ?
Thanks a lot for sharing ... _________________ Carl Zeiss Jena: Biotar 58/2 1Q, DDR Pancolar 80/1.8 MC, Biotar 75/1.5, Biotar 10cm/2, DDR Sonnar 135/3.5 MC
Carl Zeiss C/Y: Planar 50/1.4 T*, Planar 85/1.4 T*, Planar 100/2 T*, Sonnar 135/2.8 T*
Leica: Summicron-R 35/2 v1, Summicron-R 50/2, Summilux-R 80/1.4, Summicron-R 90/2
Pentax: A 50/1.2
Minolta: Rokkor MC 58/1.2, Rokkor MC 85/1.7, Rokkor MC 100/2, MD 200/2.8
Olympus: Zuiko MC Auto-W 21/2, Zuiko 50/1.2, Zuiko MC Auto-T 85/2, Zuiko Auto-T 100/2
Nikon: Nikkor 28/2.8 Ais, Nikkor 85/1.8, Nikkor 105/1.8, 300/2.8 ED (Ais)
Canon: FD 50/1.2 L, FD 85/1.2 L
Sony: 135/2.8 STF
Jupiter: 85/2 Alu
Cyclop: 85/1.5
Meyer-Optic: Trioplan 100/2.8, Orestor 100/2.8, Primotar 135/3.5
Samyang: 8/3.5 FE, 14/2.8, 85/1.4, 85/1.4 UMC
FOR SALE
Carl Zeiss Jena Biotar 10cm/2 || Carl Zeiss ZE Distagon 28/2 || Minolta Rokkor MD 35/1.8 || Rokkor-X MC 85/1.7 || Rokkor MD 85/1.7 || Olympus Zuiko MC Auto-W 21/2 || Olympus 100/2 || Nikon Nikkor 35/1.4 || Canon: FD 55/1.2 || Vivitar 90/2.5 Series 1 VMC || Tamron: 90/2.5 SP
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SVP
Joined: 15 Jan 2009 Posts: 665 Location: Greece
Expire: 2017-12-17
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Posted: Wed Jan 04, 2012 3:20 pm Post subject: |
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SVP wrote:
Nice experiments... I somehow like the slight surreal look of the results. |
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Smoli4
Joined: 01 Jul 2011 Posts: 606 Location: Haifa, Israel
Expire: 2013-06-07
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Posted: Wed Jan 04, 2012 4:16 pm Post subject: |
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Smoli4 wrote:
about 1 meter
Maybe you know some trick i can do to make it focus further and them build a helicoid for it? like those adapters with glass elements? |
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kds315*
Joined: 12 Mar 2008 Posts: 16626 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Wed Jan 04, 2012 6:31 pm Post subject: |
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kds315* wrote:
Smoli4 wrote: |
Yes very silimar design to what you have posted Ian, and i looked up F-theta scanning lenses, and they look almost identical to this lens.
man do i wish for nex camera right now or what....
klaus about the CA, there is slight a slight hint but honestly i didnt see massive amounts and i cant see something that stands out in the pictures.
but the projection does seems unusual to normal taking lenses. i wish i could test it with further subjects.... |
You picture of the spring is quite a dead giveaway for CA. It gets all green on top.
Same on the cats whiskers in cat image #2. Bit actually you are right, it is not as
bad as I had expected. _________________ 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
Last edited by kds315* on Wed Jan 04, 2012 6:38 pm; edited 1 time in total |
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kds315*
Joined: 12 Mar 2008 Posts: 16626 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Wed Jan 04, 2012 6:34 pm Post subject: |
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kds315* wrote:
iangreenhalgh1 wrote: |
Wow, what a beautiful lens and stunning results, this is perhaps the smoothest bokeh I have seen, and it is certainly sharp in centre. Reminds me of Petzval type projector lens I have in how it renders.
I think it is a Petzval type lens, front and read cemented doublets. With the huge size, you could fit an aperture in there between the elements with some work.
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Ian, take a look at the lens scheme before you type: the rear elements of a Petzval lens are NOT cemented.
I honestly doubt that this laser lens is a Petzval design, it looks like a 3e/2g design to me _________________ 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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iangreenhalgh1
Joined: 18 Mar 2011 Posts: 15679
Expire: 2014-01-07
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Posted: Wed Jan 04, 2012 7:42 pm Post subject: |
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iangreenhalgh1 wrote:
Klaus, read what I wrote carefully before you condescend.
I wrote 'Petzval type' not 'Petzval'. I have quite a few 'Petzval type' lenses and I've had most of them apart for cleaning, most had both groups cemented.
The Petzval type isn't one specific design, it has been slightly modified by many makers, hence I used 'type' to designate this family of modifications based on the original Petzval design.
This is all rather pedantic though, n'est pa?
smoli can clarify whether there are one or two elements in the rear of his lens. _________________ I don't care who designed it, who made it or what country it comes from - I just enjoy using it! |
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Sevo
Joined: 22 Aug 2008 Posts: 1189 Location: Frankfurt, Germany
Expire: 2012-12-03
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Posted: Wed Jan 04, 2012 8:18 pm Post subject: |
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Sevo wrote:
iangreenhalgh1 wrote: |
I wrote 'Petzval type' not 'Petzval'. I have quite a few 'Petzval type' lenses and I've had most of them apart for cleaning, most had both groups cemented.
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But then it is no Petzval type - the air space is necessary for the design, dropping it does result in a lens with quite different characteristics. Even if some ebay sellers would like to extend the definition to every coke bottle bottom in their drawers, only Petzvals are in fact Petzvals. You may want to re-check whether your double-cemented "Petzvals" aren't really of the (much more widespread) RR/Aplanat type. _________________ Sevo |
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Sevo
Joined: 22 Aug 2008 Posts: 1189 Location: Frankfurt, Germany
Expire: 2012-12-03
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Posted: Wed Jan 04, 2012 8:22 pm Post subject: |
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Sevo wrote:
nixland wrote: |
Holy Cyclop .... 85mm f/1 ??? |
Field lenses almost always are f/1, due to the way they are typically used (where their aperture must be bigger than either image or object). They are the opposite of a flat field lens - their purpose is to counteract the curvature of some optical system. _________________ Sevo |
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Smoli4
Joined: 01 Jul 2011 Posts: 606 Location: Haifa, Israel
Expire: 2013-06-07
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Posted: Wed Jan 04, 2012 9:25 pm Post subject: |
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Smoli4 wrote:
About this lens optical design.
I cant really tell if the rear element\s is a one piece or a cemented group.
correct me if im wrong, but most of the time when 2 lenses are cemented you could see under some angle and light, a round Circle reflecting inside the glass. ?
well if this should happen every single time with all cemented elements, then its not happening with this rear group.
But if it shouldn't happen every single time, then the rear element looks like its constructed from 2 slightly different diameter lenses and both will have to be concave elements.
Last edited by Smoli4 on Wed Jan 04, 2012 10:10 pm; edited 1 time in total |
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Lightshow
Joined: 04 Nov 2011 Posts: 3666 Location: Calgary
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Posted: Wed Jan 04, 2012 10:05 pm Post subject: |
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Lightshow wrote:
http://www.antiquecameras.net/petzvallens.html
Quote: |
The next Petzval variation was in 1878 by Voigtlander. This design basically eliminated the air space in the rear group of Petzval's original design. Removing the air space was to help improve contrast and reduce flare, over Petzval's original design, but from actual accounts, the improvements appeared minimal and the lens wasnt quite as sharp as other Petzval lenses.
Hermann Wilhelm Vogel wrote in his book, The Progress of Photography Since the Year 1879;
"Voigtlander's new Portrait Lens.—This has a front combination similar to the old Petzval. But the back combination consists of two single lenses cemented, by which the reflection of light occurring in the old form with separated lenses is avoided. The focus of these lenses is relatively shorter than that of the old form with similar opening. For instance, Voigtlander's C lens, by substituting the new back combination, has its focus shortened from 10 inches to 7 1/2 inches, thus increasing the illumination in the proportion 9:16. The new back combinations may be bought separately, so as to be used with any lenses by the same maker. We thus have the power to shorten or lengthen the focus, and correspondingly increase or lessen the light at will, by using the new form of back combination." |
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