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Richard_D
Joined: 21 Oct 2007 Posts: 2378 Location: Faversham Kent UK
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Posted: Fri Mar 14, 2008 2:04 pm Post subject: Focus using m42 lenses on a Nikon |
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Richard_D wrote:
Okay I know I can't get infinity focus on a Nikon with M42 lenses but is there a way og working out what the maximum focal distance is for a given lens? Do longer lenses give a greater long focus? _________________ Richard
The interesting bit:
Nikkors: 20mm f2.8 AIS, 24mm f2.8 AIS, 28mm f2.8 AIS, 35mm f2 AIS, 50mm f1.4 AI, 50mm f1.48AI, 50m f2 AI,
55mm f3.5 AI'd, 105mm f4 AI, 135mm f2.8 AI'd, 135mm f3.5 AI'd, 200mm f4 AI'd .
Nikon E Series: 100mm f2.8 .
Soviet Nikon Mount: Zenitar 16mm f2.8, Arsat/arax/photex 85mm T&S f2.8 .
Other: Asahi Super Takumar 55 mm f2 (M42) ,Tamron 300mm f5.6 SP, Tamron 500mm f8 SP.
DSLR: Nikon D700. 35mm SLRsNikon FE, Pentax S1a.
TLR: Rolliecord II.
Sub-Minature: Pentax Auto 110, 18mm f2.8, 24mm f2.8, 50mm f2.8.
More to come... |
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Attila
Joined: 24 Feb 2007 Posts: 57839 Location: Hungary
Expire: 2021-11-18
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Posted: Fri Mar 14, 2008 2:17 pm Post subject: |
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Attila wrote:
In my practical experience a 135mm lens on Nikon body works as 85-100mm lens on Olympus body. _________________ -------------------------------
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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patrickh
Joined: 23 Aug 2007 Posts: 8551 Location: Oregon
Expire: 2011-11-18
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Posted: Fri Mar 14, 2008 7:19 pm Post subject: |
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patrickh wrote:
I dont see any consistent relationship on my nikons when I mount the M42's
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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Richard_D
Joined: 21 Oct 2007 Posts: 2378 Location: Faversham Kent UK
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Posted: Fri Mar 14, 2008 7:49 pm Post subject: |
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Richard_D wrote:
Thanks I'm guessing that the reasonably priced 1000mm mirror that the local camera shop has just got in would probably be useless then I was hoping someone would say on very long lenses you won't get infinity but you'll get a workable range _________________ Richard
The interesting bit:
Nikkors: 20mm f2.8 AIS, 24mm f2.8 AIS, 28mm f2.8 AIS, 35mm f2 AIS, 50mm f1.4 AI, 50mm f1.48AI, 50m f2 AI,
55mm f3.5 AI'd, 105mm f4 AI, 135mm f2.8 AI'd, 135mm f3.5 AI'd, 200mm f4 AI'd .
Nikon E Series: 100mm f2.8 .
Soviet Nikon Mount: Zenitar 16mm f2.8, Arsat/arax/photex 85mm T&S f2.8 .
Other: Asahi Super Takumar 55 mm f2 (M42) ,Tamron 300mm f5.6 SP, Tamron 500mm f8 SP.
DSLR: Nikon D700. 35mm SLRsNikon FE, Pentax S1a.
TLR: Rolliecord II.
Sub-Minature: Pentax Auto 110, 18mm f2.8, 24mm f2.8, 50mm f2.8.
More to come... |
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Attila
Joined: 24 Feb 2007 Posts: 57839 Location: Hungary
Expire: 2021-11-18
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Posted: Fri Mar 14, 2008 8:02 pm Post subject: |
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Attila wrote:
I used 500mm M42 mirror lens in zoo with Nikon body it made very nice portraits from 10-15m distance. _________________ -------------------------------
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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luisalegria
Joined: 07 Mar 2008 Posts: 6627 Location: San Francisco, USA
Expire: 2018-01-18
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Posted: Fri Mar 14, 2008 8:07 pm Post subject: |
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luisalegria wrote:
I have two 500mm mirrors, 300mm and 400mm regular lenses also, and all of them focus past infinity. This can be annoying. OK, they are all cheap lenses, but thats what we're talking abount.
Your best option would be to test that lens, I would say the odds are good that it will get to infinity on your Nikon as-is.
Your reasonably priced 1000mm also probably has a T-mount, customary on third party lenses of this kind, which either just screws off or can be removed reasonably easily. This is easibly interchangable from M42 to Nikon. |
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Richard_D
Joined: 21 Oct 2007 Posts: 2378 Location: Faversham Kent UK
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Posted: Fri Mar 14, 2008 9:38 pm Post subject: |
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Richard_D wrote:
luisalegria wrote: |
I have two 500mm mirrors, 300mm and 400mm regular lenses also, and all of them focus past infinity. This can be annoying. OK, they are all cheap lenses, but thats what we're talking abount.
Your best option would be to test that lens, I would say the odds are good that it will get to infinity on your Nikon as-is.
Your reasonably priced 1000mm also probably has a T-mount, customary on third party lenses of this kind, which either just screws off or can be removed reasonably easily. This is easibly interchangable from M42 to Nikon. |
Sadly it's a fixed M42. I guess the thing to do is take the camera and adaptor into the shop and see. To be any use I'd need 30-40m _________________ Richard
The interesting bit:
Nikkors: 20mm f2.8 AIS, 24mm f2.8 AIS, 28mm f2.8 AIS, 35mm f2 AIS, 50mm f1.4 AI, 50mm f1.48AI, 50m f2 AI,
55mm f3.5 AI'd, 105mm f4 AI, 135mm f2.8 AI'd, 135mm f3.5 AI'd, 200mm f4 AI'd .
Nikon E Series: 100mm f2.8 .
Soviet Nikon Mount: Zenitar 16mm f2.8, Arsat/arax/photex 85mm T&S f2.8 .
Other: Asahi Super Takumar 55 mm f2 (M42) ,Tamron 300mm f5.6 SP, Tamron 500mm f8 SP.
DSLR: Nikon D700. 35mm SLRsNikon FE, Pentax S1a.
TLR: Rolliecord II.
Sub-Minature: Pentax Auto 110, 18mm f2.8, 24mm f2.8, 50mm f2.8.
More to come... |
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kds315*
Joined: 12 Mar 2008 Posts: 16497 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Fri Mar 14, 2008 9:53 pm Post subject: |
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kds315* wrote:
You might be lucky since esp. the very long teles sometimes have a built in "focus reserve" which allows to focus "behind" infinity. This was made to compensate for temperature changes. I would try it out, but you would need a target at least 200x the focal length away _________________ 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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ChrisLilley
Joined: 01 Jan 2008 Posts: 1767 Location: Nice, France
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Posted: Fri Mar 14, 2008 11:25 pm Post subject: |
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ChrisLilley wrote:
kds315* wrote: |
you would need a target at least 200x the focal length away |
Could you explain that equation a little more? Is it saying that the distance which is indistinguishable from infinity is closer on wide lenses and further away on teles? _________________ Camera (ˈkæ mə rə), n. Device for taking pictures in bright light
There are 10 kinds of people in the world: those who understand binary, and those who don’t. Key: Ai-P, Ai, Ai'ed, AiS
Camera: Nikon D90, D40, DK-21M eyepiece, ML-3 remote MF lenses: Nikkor 20mm f/4 K, AI'ed | N.K. Nikkor-N 24mm f/2.8 | Nikkor-N.C 24mm f/2.8 | Nikkor 28mm f/2.8 AiS late model | Арсенал (Arsenal) Мир-24Н (Mir-24N) 35mm f/2 | Cosina Voigtländer Ultron SL II 40mm f/2.0 | Micro-Nikkor 55mm f/2.8 AiS | Zoom-Nikkor 80-200 f/4.5 Ai | ЛЗОС (LZOS) Юпитер-9 (Jupiter-9) 85mm f/2 | Cosina Voigtländer APO-Lanthar 90mm f/3.5 SL | Nikkor-P 105mm f/2.5 pre-Ai, Ai'ed | Micro-Nikkor 105mm f/4 | Schneider Kreuznach Componon 105mm f/5.6 | Nikkor 135mm f/2.8, Ai'ed 1976 model | Nikkor 180mm f/2.8 ED AiS | Арсенал (Arsenal) ТЕЛЕАР-Н (Telear-n) 200mm f/3.5 | Nikkor 300 mm f/4.5 Ai (full equipment list) |
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LucisPictor
Joined: 26 Feb 2007 Posts: 17633 Location: Oberhessen, Germany / Maidstone ('95-'96)
Expire: 2013-12-03
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Posted: Sat Mar 15, 2008 9:19 am Post subject: |
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LucisPictor wrote:
Attila wrote: |
In my practical experience a 135mm lens on Nikon body works as 85-100mm lens on Olympus body. |
We had this discussion already, Attila, remember?
I would love to see some comparing shots in order to understand your experience.
Does that have to do with the flange distance?
I can't explain to myself why you get this effect... _________________ Personal forum activity on pause every now and again (due to job obligations)!
Carsten, former Moderator
Things ON SALE
Carsten = "KAPCTEH" = "Karusutenu" | T-shirt?.........................My photos from Emilia: http://www.schouler.net/emilia/emilia2011.html
My gear: http://retrocameracs.wordpress.com/ausrustung/
Old list: http://forum.mflenses.com/viewtopic.php?t=65 (Not up-to-date, sorry!) | http://www.lucispictor.de | http://www.alensaweek.wordpress.com |
http://www.retrocamera.de
Last edited by LucisPictor on Sat Mar 15, 2008 10:05 pm; edited 1 time 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: Sat Mar 15, 2008 12:32 pm Post subject: |
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kds315* wrote:
ChrisLilley wrote: |
kds315* wrote: |
you would need a target at least 200x the focal length away |
Could you explain that equation a little more? Is it saying that the distance which is indistinguishable from infinity is closer on wide lenses and further away on teles? |
Chris,
This is the rule of thumb I was told once and for me has ever worked quite well. Terrestrial infinity and atromers infinity are anyway a bit different... _________________ 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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kds315*
Joined: 12 Mar 2008 Posts: 16497 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Sat Mar 15, 2008 12:35 pm Post subject: |
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kds315* wrote:
LucisPictor wrote: |
Attila wrote: |
In my practical experience a 135mm lens on Nikon body works as 85-100mm lens on Olympus body. |
We had this discussion already, Attila, remember?
I would love to see some comparing shots in order to understand your experience.
Does that have to do with the flange distance?
I can't explain to myself why you get this effect... |
Carsten,
sounds like "Hessisch Gebabbel" to me - could you "enligthen" me pls?
[parts of my family are from Hungen 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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Attila
Joined: 24 Feb 2007 Posts: 57839 Location: Hungary
Expire: 2021-11-18
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Posted: Sat Mar 15, 2008 9:35 pm Post subject: |
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Attila wrote:
I don't have Nikon camera any more, Patrick has Nikon and Canon both , perhaps he able to get test shoots with same M42 lens on both camera. _________________ -------------------------------
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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LucisPictor
Joined: 26 Feb 2007 Posts: 17633 Location: Oberhessen, Germany / Maidstone ('95-'96)
Expire: 2013-12-03
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Posted: Sat Mar 15, 2008 10:08 pm Post subject: |
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LucisPictor wrote:
kds315* wrote: |
LucisPictor wrote: |
Attila wrote: |
In my practical experience a 135mm lens on Nikon body works as 85-100mm lens on Olympus body. |
We had this discussion already, Attila, remember?
I would love to see some comparing shots in order to understand your experience.
Does that have to do with the flange distance?
I can't explain to myself why you get this effect... |
Carsten,
sounds like "Hessisch Gebabbel" to me - could you "enligthen" me pls?
[parts of my family are from Hungen btw.] |
I just do not understand why Attila's 135mm lens works as a 85-100 mm lens at his Olympus.
Normally, an Olympus DSLR has a 2x crop, so a 135mm lens should work as a "270" mm lens.
The distance between the sensor and the mount is really short in Oly DSLRs, though. So my question is, can this influence the "effective" focal length?
The only way to find out would be to shoot the same subject with a 135mm on an Oly DSLR and with a 85mm, a 105mm, a 135mm and a 200mm lens on a (35mm) film cam and then compare the pictures. _________________ Personal forum activity on pause every now and again (due to job obligations)!
Carsten, former Moderator
Things ON SALE
Carsten = "KAPCTEH" = "Karusutenu" | T-shirt?.........................My photos from Emilia: http://www.schouler.net/emilia/emilia2011.html
My gear: http://retrocameracs.wordpress.com/ausrustung/
Old list: http://forum.mflenses.com/viewtopic.php?t=65 (Not up-to-date, sorry!) | http://www.lucispictor.de | http://www.alensaweek.wordpress.com |
http://www.retrocamera.de |
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Attila
Joined: 24 Feb 2007 Posts: 57839 Location: Hungary
Expire: 2021-11-18
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Posted: Sat Mar 15, 2008 10:29 pm Post subject: |
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Attila wrote:
2x crop is bullshit 135mm lens is never works as a 270mm lens on film.
I said a 135mm lens on Nikon body works same than a 100mm on Olympus body. _________________ -------------------------------
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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ChrisLilley
Joined: 01 Jan 2008 Posts: 1767 Location: Nice, France
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Posted: Sun Mar 16, 2008 12:55 am Post subject: |
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ChrisLilley wrote:
Attila wrote: |
2x crop is bullshit |
Well, no, its the correct crop factor.
Attila wrote: |
I said a 135mm lens on Nikon body works same than a 100mm on Olympus body. |
Because a Nikon has 1.5 crop factor. 135 times 1.5 is 202.5
Olympus has 2.0 crop factor. 100 times 2 is 200. _________________ Camera (ˈkæ mə rə), n. Device for taking pictures in bright light
There are 10 kinds of people in the world: those who understand binary, and those who don’t. Key: Ai-P, Ai, Ai'ed, AiS
Camera: Nikon D90, D40, DK-21M eyepiece, ML-3 remote MF lenses: Nikkor 20mm f/4 K, AI'ed | N.K. Nikkor-N 24mm f/2.8 | Nikkor-N.C 24mm f/2.8 | Nikkor 28mm f/2.8 AiS late model | Арсенал (Arsenal) Мир-24Н (Mir-24N) 35mm f/2 | Cosina Voigtländer Ultron SL II 40mm f/2.0 | Micro-Nikkor 55mm f/2.8 AiS | Zoom-Nikkor 80-200 f/4.5 Ai | ЛЗОС (LZOS) Юпитер-9 (Jupiter-9) 85mm f/2 | Cosina Voigtländer APO-Lanthar 90mm f/3.5 SL | Nikkor-P 105mm f/2.5 pre-Ai, Ai'ed | Micro-Nikkor 105mm f/4 | Schneider Kreuznach Componon 105mm f/5.6 | Nikkor 135mm f/2.8, Ai'ed 1976 model | Nikkor 180mm f/2.8 ED AiS | Арсенал (Arsenal) ТЕЛЕАР-Н (Telear-n) 200mm f/3.5 | Nikkor 300 mm f/4.5 Ai (full equipment list) |
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Attila
Joined: 24 Feb 2007 Posts: 57839 Location: Hungary
Expire: 2021-11-18
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Posted: Sun Mar 16, 2008 1:11 am Post subject: |
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Attila wrote:
You have a Nikon body try it with a lens what has no right flange distance (M42) and see how it works. Also try with a lens with right flange distance (Nikon) and see difference. _________________ -------------------------------
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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Attila
Joined: 24 Feb 2007 Posts: 57839 Location: Hungary
Expire: 2021-11-18
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Posted: Sun Mar 16, 2008 1:21 am Post subject: |
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Attila wrote:
Magnification factor
The crop factor is sometimes referred to as "magnification factor". This usage commonly derives from the telephoto effect, in which lenses of a given focal length seem to produce greater magnification on crop-factor cameras than they do on full-frame cameras. It should be noted that the lens casts the same image no matter what camera it is attached to, and therefore produces the same magnification on all cameras. It is only because the image sensor is smaller in many DSLRs that a narrower FOV is achieved. The end result is that while the lens produces the same magnification it always did, the image produced on small-sensor DSLRs will be enlarged more to produce output (print or screen) that matches the output of a longer focal length lens on a full-frame camera. That is, the magnification as usually defined, from subject to focal plane, is unchanged, but the system magnification from subject to print is increased.
Source : http://en.wikipedia.org/wiki/Crop_factor
If you have a target from you far as 30m for example. With a 300mm lens you can't get closer with a 2x crop camera than with film camera just you will have smaller area from targeted subject. This means a 300 mm lens on a 2x crop camera will not equal a 600mm lens. _________________ -------------------------------
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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ChrisLilley
Joined: 01 Jan 2008 Posts: 1767 Location: Nice, France
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Posted: Sun Mar 16, 2008 1:25 am Post subject: |
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ChrisLilley wrote:
Attila wrote: |
You have a Nikon body try it with a lens what has no right flange distance (M42) and see how it works. Also try with a lens with right flange distance (Nikon) and see difference. |
Attila, I just agreed with you! (well apart from your random bullshit remark) that 135mm on Nikon and 100mm on Olympus would have the same field of view.
The register distance is not going to affect crop factor; that is solely a function of the sensor size. If the register distance is a lot different to the intended one then focus range will be affected, certainly, and the size of the image circle may also be affected. But if the image circle gets larger, it has no visible effect; and if it gets smaller, you will bet vignetting but it won't change the effective fov. _________________ Camera (ˈkæ mə rə), n. Device for taking pictures in bright light
There are 10 kinds of people in the world: those who understand binary, and those who don’t. Key: Ai-P, Ai, Ai'ed, AiS
Camera: Nikon D90, D40, DK-21M eyepiece, ML-3 remote MF lenses: Nikkor 20mm f/4 K, AI'ed | N.K. Nikkor-N 24mm f/2.8 | Nikkor-N.C 24mm f/2.8 | Nikkor 28mm f/2.8 AiS late model | Арсенал (Arsenal) Мир-24Н (Mir-24N) 35mm f/2 | Cosina Voigtländer Ultron SL II 40mm f/2.0 | Micro-Nikkor 55mm f/2.8 AiS | Zoom-Nikkor 80-200 f/4.5 Ai | ЛЗОС (LZOS) Юпитер-9 (Jupiter-9) 85mm f/2 | Cosina Voigtländer APO-Lanthar 90mm f/3.5 SL | Nikkor-P 105mm f/2.5 pre-Ai, Ai'ed | Micro-Nikkor 105mm f/4 | Schneider Kreuznach Componon 105mm f/5.6 | Nikkor 135mm f/2.8, Ai'ed 1976 model | Nikkor 180mm f/2.8 ED AiS | Арсенал (Arsenal) ТЕЛЕАР-Н (Telear-n) 200mm f/3.5 | Nikkor 300 mm f/4.5 Ai (full equipment list) |
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Attila
Joined: 24 Feb 2007 Posts: 57839 Location: Hungary
Expire: 2021-11-18
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Posted: Sun Mar 16, 2008 1:39 am Post subject: |
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Attila wrote:
Sorry about for bullshit! _________________ -------------------------------
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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rick_oleson
Joined: 26 Feb 2007 Posts: 386 Location: Lexington Kentucky USA
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Posted: Sun Mar 16, 2008 3:19 am Post subject: |
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rick_oleson wrote:
You can work out your maximum focus distance mathematically.
You start with 2 numbers: the lens focal length, and the number of millimeters difference between your M42 flange's register distance and the proper register of an M42 body. I'll call this last number the "extension".
First, convert your lens focal length into diopters by dividing 1 meter by the focal length: a 500mm lens, for example, is 2.0 diopters.
Now add the extension to the lens focal length, and convert the result to diopters: if your flange is 5mm too far from the film, then the focal length plus the extension is 505mm, which is 1.98 diopters.
Subtracting one power from the other, 2.00 - 1.98 = 0.02 diopters. Now, divide this into 1 meter, and you have 50 meters. This would be the distance limit of this lens at its infinity setting.
Using the same exercise with a 50mm lens, you have 20 - 18 = 2 diopters, for a maximum focus distance of 0.5 meters.
The 5mm figure for the extension is a purely arbitrary guess, I have no idea what the actual error will be - but if you measure that and substitute the correct value for the 5mm in the above exercise, you can predict the maximum focus distance with any focal length of lens. _________________ I don't know what I want to be when I grow up |
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ChrisLilley
Joined: 01 Jan 2008 Posts: 1767 Location: Nice, France
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Posted: Sun Mar 16, 2008 3:25 am Post subject: |
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ChrisLilley wrote:
Thanks for the clear explanation, rick! _________________ Camera (ˈkæ mə rə), n. Device for taking pictures in bright light
There are 10 kinds of people in the world: those who understand binary, and those who don’t. Key: Ai-P, Ai, Ai'ed, AiS
Camera: Nikon D90, D40, DK-21M eyepiece, ML-3 remote MF lenses: Nikkor 20mm f/4 K, AI'ed | N.K. Nikkor-N 24mm f/2.8 | Nikkor-N.C 24mm f/2.8 | Nikkor 28mm f/2.8 AiS late model | Арсенал (Arsenal) Мир-24Н (Mir-24N) 35mm f/2 | Cosina Voigtländer Ultron SL II 40mm f/2.0 | Micro-Nikkor 55mm f/2.8 AiS | Zoom-Nikkor 80-200 f/4.5 Ai | ЛЗОС (LZOS) Юпитер-9 (Jupiter-9) 85mm f/2 | Cosina Voigtländer APO-Lanthar 90mm f/3.5 SL | Nikkor-P 105mm f/2.5 pre-Ai, Ai'ed | Micro-Nikkor 105mm f/4 | Schneider Kreuznach Componon 105mm f/5.6 | Nikkor 135mm f/2.8, Ai'ed 1976 model | Nikkor 180mm f/2.8 ED AiS | Арсенал (Arsenal) ТЕЛЕАР-Н (Telear-n) 200mm f/3.5 | Nikkor 300 mm f/4.5 Ai (full equipment list) |
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Richard_D
Joined: 21 Oct 2007 Posts: 2378 Location: Faversham Kent UK
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Posted: Sun Mar 16, 2008 2:15 pm Post subject: |
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Richard_D wrote:
Thanks Rick - that's exactly what I needed _________________ Richard
The interesting bit:
Nikkors: 20mm f2.8 AIS, 24mm f2.8 AIS, 28mm f2.8 AIS, 35mm f2 AIS, 50mm f1.4 AI, 50mm f1.48AI, 50m f2 AI,
55mm f3.5 AI'd, 105mm f4 AI, 135mm f2.8 AI'd, 135mm f3.5 AI'd, 200mm f4 AI'd .
Nikon E Series: 100mm f2.8 .
Soviet Nikon Mount: Zenitar 16mm f2.8, Arsat/arax/photex 85mm T&S f2.8 .
Other: Asahi Super Takumar 55 mm f2 (M42) ,Tamron 300mm f5.6 SP, Tamron 500mm f8 SP.
DSLR: Nikon D700. 35mm SLRsNikon FE, Pentax S1a.
TLR: Rolliecord II.
Sub-Minature: Pentax Auto 110, 18mm f2.8, 24mm f2.8, 50mm f2.8.
More to come... |
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rick_oleson
Joined: 26 Feb 2007 Posts: 386 Location: Lexington Kentucky USA
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Posted: Sun Mar 16, 2008 2:39 pm Post subject: |
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rick_oleson wrote:
You're welcome!
: ) = _________________ I don't know what I want to be when I grow up |
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ChrisLilley
Joined: 01 Jan 2008 Posts: 1767 Location: Nice, France
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Posted: Sun Mar 16, 2008 7:24 pm Post subject: |
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ChrisLilley wrote:
OK lets see if I understand and can apply this ...
My Cosina Voigtländer 40mm f/2 has a diopter of 1000/40 = 25.
It comes with a close-up lens as standard; this lens changes the focus range to 0.38 (max) to 0.25m (min).
1/.38 is 2.6315
Which makes the close-up lens 22.3684 diopters? (25 - 2.6315) ?
I'm not sure I have that right.... _________________ Camera (ˈkæ mə rə), n. Device for taking pictures in bright light
There are 10 kinds of people in the world: those who understand binary, and those who don’t. Key: Ai-P, Ai, Ai'ed, AiS
Camera: Nikon D90, D40, DK-21M eyepiece, ML-3 remote MF lenses: Nikkor 20mm f/4 K, AI'ed | N.K. Nikkor-N 24mm f/2.8 | Nikkor-N.C 24mm f/2.8 | Nikkor 28mm f/2.8 AiS late model | Арсенал (Arsenal) Мир-24Н (Mir-24N) 35mm f/2 | Cosina Voigtländer Ultron SL II 40mm f/2.0 | Micro-Nikkor 55mm f/2.8 AiS | Zoom-Nikkor 80-200 f/4.5 Ai | ЛЗОС (LZOS) Юпитер-9 (Jupiter-9) 85mm f/2 | Cosina Voigtländer APO-Lanthar 90mm f/3.5 SL | Nikkor-P 105mm f/2.5 pre-Ai, Ai'ed | Micro-Nikkor 105mm f/4 | Schneider Kreuznach Componon 105mm f/5.6 | Nikkor 135mm f/2.8, Ai'ed 1976 model | Nikkor 180mm f/2.8 ED AiS | Арсенал (Arsenal) ТЕЛЕАР-Н (Telear-n) 200mm f/3.5 | Nikkor 300 mm f/4.5 Ai (full equipment list) |
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