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JMC
Joined: 29 May 2018 Posts: 177 Location: London, UK
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Posted: Tue Nov 06, 2018 9:14 pm Post subject: UV Buttercup with Katoptaron LDM-1/s |
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JMC wrote:
This is a really quirky lens. A Katoptaron LDM-1/s. The LDM part stands for Long Distance Microscope, and it is a mirror only lens with focal length of 800mm. Unusually for a mirror lens it also has an adjustable aperture.
Here's picture of the lens.
#1
The camera mounts onto the extension tube on the left hand side of lens in the image above.
I'm quite fond of UV imaging at the moment. and I tried out the lens with a UV image of a Buttercup. The illumination was a single 365nm UV LED moved around during image acquisition, taken on my ACS UV modified Nikon d810 at ISO2000, and 1/2s exposure. Whitebalanced in Darktable. The flower was 2 meters from the front of the lens. Not sorted out my mount for the lens yet, so the lens was sat on the kitchen floor. I used self timer and exposure delay mode.
Firstly the full frame image (reduced resolution for sharing);
#2
And a crop from the image above (again reduced resolution slightly for sharing here). The Buttercup shows the characteristic black center in UV.
#3
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kds315*
Joined: 12 Mar 2008 Posts: 16497 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Tue Nov 06, 2018 9:21 pm Post subject: |
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kds315* wrote:
Congrats, very rare and special lens this is! You seems to get good use out of it!
Personally I would recommend to use a stronger UV light, say a Nichia 365nm
LED torch for instance, as this also gives a bright preview image. _________________ 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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JMC
Joined: 29 May 2018 Posts: 177 Location: London, UK
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Posted: Tue Nov 06, 2018 10:05 pm Post subject: |
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JMC wrote:
Thanks Klaus. It's an amazing lens. Yes, better light is on the list of things to get or build. |
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Abbazz
Joined: 23 Jun 2007 Posts: 1098 Location: Jakarta
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Posted: Tue Nov 06, 2018 10:36 pm Post subject: |
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Abbazz wrote:
Congrats on the acquisition of this very rare lens! Image quality seems really good.
Cheers!
Abbazz _________________ Il n'y a rien dans le monde qui n'ait son moment decisif, et le chef-d'oeuvre de la bonne conduite est de connaitre et de prendre ce moment. - Cardinal de Retz
The 6x9 Photography Online Resource:
http://artbig.com/ |
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JMC
Joined: 29 May 2018 Posts: 177 Location: London, UK
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Posted: Wed Nov 07, 2018 10:15 am Post subject: |
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JMC wrote:
Thanks Abbazz. Yes this lens has a lot of potential, and is a very interesting piece of history. |
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spleenone
Joined: 26 Dec 2009 Posts: 1130 Location: Slovakia
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Posted: Wed Nov 07, 2018 12:40 pm Post subject: |
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spleenone wrote:
I am not specialist but what about sun light?
Otherwise nice find, indeed. _________________ Shoot on analog mainly with
Nikkor glass
then Pentacon6TL for squares
and Fujica GL690 in case of 6x9
Carpe diem! |
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JMC
Joined: 29 May 2018 Posts: 177 Location: London, UK
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Posted: Wed Nov 07, 2018 1:15 pm Post subject: |
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JMC wrote:
Sunlight is good for UV imaging, Spleenone. However any movement from wind when taking pictures outside is a huge issue, and exposure times with the small aperture this has would be very long as even modified cameras aren't that sensitive to UV. So ideally a still, wind free, environment is better for this one. And besides, here in the UK, sunlight is a rare thing |
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spleenone
Joined: 26 Dec 2009 Posts: 1130 Location: Slovakia
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Posted: Wed Nov 07, 2018 2:11 pm Post subject: |
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spleenone wrote:
Understand then. Hope you will have better conditions next time. Good luck for your trials. _________________ Shoot on analog mainly with
Nikkor glass
then Pentacon6TL for squares
and Fujica GL690 in case of 6x9
Carpe diem! |
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PBFACTS
Joined: 24 Dec 2008 Posts: 564
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Posted: Fri Nov 09, 2018 5:21 pm Post subject: Re: UV Buttercup with Katoptaron LDM-1/s |
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PBFACTS wrote:
JMC wrote: |
This is a really quirky lens. A Katoptaron LDM-1/s. The LDM part stands for Long Distance Microscope, and it is a mirror only lens with focal length of 800mm. Unusually for a mirror lens it also has an adjustable aperture.
Here's picture of the lens.
#1
The camera mounts onto the extension tube on the left hand side of lens in the image above.
I'm quite fond of UV imaging at the moment. and I tried out the lens with a UV image of a Buttercup. The illumination was a single 365nm UV LED moved around during image acquisition, taken on my ACS UV modified Nikon d810 at ISO2000, and 1/2s exposure. Whitebalanced in Darktable. The flower was 2 meters from the front of the lens. Not sorted out my mount for the lens yet, so the lens was sat on the kitchen floor. I used self timer and exposure delay mode.
Firstly the full frame image (reduced resolution for sharing);
#2
And a crop from the image above (again reduced resolution slightly for sharing here). The Buttercup shows the characteristic black center in UV.
#3
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Please find the patent for that lens
patent from : http://www.macrolenses.de/ml_detail_sl.php?ObjektiveNr=315
That lenses
are uv ok because they are made of mirrors only
can have a stop because light rays does not go back and forth
.. The drawbacks are
quality image can be very poor if mirror or adjustements are not 100% perfect or if some dust goes on the mirrors (there is NO front lens or mirror blocking dust)
the lenght is long because of the light path and because they have no refractor lenses inside = this is not what we are looking now for mirror lenses
_________________ OM USER .. I KEEP/USE:
Om2 sp + T32 (grip/filter/zoom) + T8
+ Zuiko 16mm 3.5 / 55mm 1.2 / 65-200 4/ x1.4
+ Sigma 8mm 4.0 / 14mm 3.5 / 18-35 3.5-4.5
+ Tamron 35/105 2.8
+Tokina 150/500 5.6
+ Kiron 105/2.8 macro 1:1
+ Vivitar S1 90/180 falst field macro
+ 2x Doubler HR7
>>I SELL: OM10 + OM4ti
+ i sell: OM Md1 + Md 2 + Grip PowerPack + charger
+ i sell: OM Zuiko 24mm 2.8 / 28mm 3.5 / 50mm 1.8 / 50mm 1.4 / 50mm 3.5 macro / 35-70 3.6 / 35-105 3.5-4.5 / 75-150 4 / 500mm / 2xA
+ i sell: OM Kiron 28/105 3.2-4.5 / 1.5 converter
+ i sell: OM Makinon reflex 5.6/300 + Spector reflex (makinon) 500mm
+ i sell: OM Macro panagor extender 1:1
+ i sell: OM Sigma 16mm 2.8 fisheye (last version) / 21-35 3.5-4.2 ot/ 28-70 2.8 /1000mm mirror
+ i sell: Tamron 28-70 3.5-4.5 / 28-80 sp 3.5-4.2 / 28-135 sp 4-4.5 / /28-200 3.5 / 35-135 3..5-4.5 / 90mm sp macro 1:1 2.8
+ i sell: OM Soligor 2x doubler / x3 converte
+ i sell: Soligor FisheEye x0.15
+ i sell: OM Tokina 28/135 4-4.6 / 70/210 3.5 (= vivitar S1 v2)
+ i sell: OM Vivitar 28-70 3.5-4.8 / 28-90 s1 2.8-3.5 / 35-70 2.8-3.8 / 55/2.8 Macro 1:1 (komine) / 70-150 3.8 ot (kiron) / 75-150 ot 3.8 (tokina + 2x matched)
+ i sell : OM cosina 100-500 5.6/8
Last edited by PBFACTS on Fri Nov 09, 2018 6:13 pm; edited 2 times in total |
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kds315*
Joined: 12 Mar 2008 Posts: 16497 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Fri Nov 09, 2018 6:03 pm Post subject: Re: UV Buttercup with Katoptaron LDM-1/s |
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kds315* wrote:
PBFACTS wrote: |
Please find the patent for that lens
That lenses
are uv ok because they are made of mirrors only
can have a stop because light rays does not go back and forth
.. The drawbacks are
quality image can be very poor if mirror or adjustements are not 100% perfect or if some dust goes on the mirrors (there is NO front lens or mirror blocking dust)
the lenght is long because of the light path and because they have no refractor lenses inside = this is not what we are looking now for mirror lenses
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If you copy stuff from my macrolenses site (where I have that patent image), then have the curtesy please to at least cite the source... http://www.macrolenses.de/ml_detail_sl.php?ObjektiveNr=315
Guess you haven't understood why this lens is so special, it is capable of working with UV light, this IS "what we are looking for", the "UV-people" _________________ 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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