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dickb
Joined: 04 Apr 2008 Posts: 821
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Posted: Fri Dec 09, 2016 3:22 pm Post subject: Quick and dirty image circle comparisons |
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dickb wrote:
I was playing around with my Industar 69 28mm f/2.8 on my Sony NEX 5n with my new adapter (thanks Chris) when I wondered what its image circle was like and if it would make sense to use it on my full frame A7. The quick and literally dirty (I know, I should have cleaned my sensor) answer is no:
Industar 69 28/2.8
So my next question was, do any of my other small wide angle lenses not designed for full frame come close?
Carl Zeiss Tevidon 25/1.4
Carl Zeiss Tevidon 35/1.9
Carl Zeiss S-Planar 32/4
Schneider Cine Xenon 25/1.4
Schneider Xenoplan 28/2.0
Kern Macro Switar 26/1.1
Rodenstock Rodagon 35/4
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dickb
Joined: 04 Apr 2008 Posts: 821
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Posted: Fri Dec 09, 2016 3:40 pm Post subject: |
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dickb wrote:
So from that I concluded that the only reasonable candidate for full frame is the Rodagon 35mm, the photo shown is taken wide open, stopped down the vignetting is almost entirely gone (but an embarrassing amount of dirt is visible). I was surprised to see the Xenoplan 28/2.0 have such a large image circle, it is a tiny lens, almost as small as the S-Planar 32/4. Both are perfectly suitable for APS-C, in my opinion. I have a broken Olympus Mju lying around somewhere, its 35/2.8 lens is supposed to be quite good and tiny and it should fill the 24*36mm frame without problem. More experiments for long winter evenings..
Of course, I'm showing illumination circles here, the image quality at the edges can be so low that image circle should be considered to be a bit smaller. |
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Pancolart
Joined: 04 Feb 2008 Posts: 3702 Location: Slovenia, EU
Expire: 2013-11-18
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Posted: Fri Dec 09, 2016 6:39 pm Post subject: |
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Pancolart wrote:
Very nice, thank's for sharing. Can you show which Schneider Xenoplan 28/2.0 variant it is? _________________ ---------------------------------
The Peculiar Apparatus Of Victorian Steampunk Photography: 100+ Genuine Steampunk Camera Designs https://www.amazon.com/dp/B0B92829NS |
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kds315*
Joined: 12 Mar 2008 Posts: 16625 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Fri Dec 09, 2016 6:41 pm Post subject: |
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kds315* wrote:
THX Dick, very helpful and correlates well with my own findings! _________________ 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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dickb
Joined: 04 Apr 2008 Posts: 821
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Posted: Fri Dec 09, 2016 7:06 pm Post subject: |
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dickb wrote:
Pancolart wrote: |
Very nice, thank's for sharing. Can you show which Schneider Xenoplan 28/2.0 variant it is? |
Sure, it's this one:
AFAIK the optics of the variants are the same, the differences are in the type of barrel, focus mechanism and aperture ring. This one is designed for rugged industrial applications, I think, and has a lockable aperture and focus. To focus you screw the lens into a C mount ring (the chrome ring on the rear) with a very narrow pitch. Very precise but not that user friendly. If I were to use such a lens on a regular basis, I would probably make an adapter to fit it onto an M39 or M42 helicoid, sacrificing some precision to gain ease of use. I actually use two other Xenoplans a lot, a 23/1.4 and a 35/1.9. These have considerably smaller image circles but as I use them reversed as high magnification macro lenses that doesn't matter. I unscrew the chrome ring and then they weigh just 50 grams - no excuse not to bring them along.
I bought a few of these on a camera fair once and I'm selling a set at the moment - check my post in the Marketplace section. |
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dickb
Joined: 04 Apr 2008 Posts: 821
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Posted: Fri Dec 09, 2016 7:25 pm Post subject: |
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dickb wrote:
kds315* wrote: |
THX Dick, very helpful and correlates well with my own findings! |
You're welcome - it isn't science if it can't be reproduced
I've also been looking at image circles of other lenses in my collection, and in a fit of rationality I've put some of those I haven't used in a long time on ebay. And some that I had multiple copies of..
It seems that there are quite a few C mount lenses where the C mount itself is a limiting factor for the image circle. My Schneider Tele Xenar 150/4 in C mount doesn't fill my Sony A7 frame, whereas the same lens in Robot Royal mount does. Actually, all the Robot Royal lenses I've used, 75mm, 90mm, 100mm, 110mm and 150mm, cover full frame. |
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dickb
Joined: 04 Apr 2008 Posts: 821
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Posted: Fri Dec 09, 2016 9:54 pm Post subject: |
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dickb wrote:
Some more image circle indications:
Schneider Xenoplan 23mm f/1.4 C mount
Schneider Xenoplan 35mm f/1.9 C mount
Schneider Xenon 50mm f/2.0 C mount
Schneider Cine-Tele-Xenar 75mm f/2.8 C mount: its diameter at the C mount is too wide to fit my adapter, so I couldn't focus to infinity properly
Schneider Tele-Xenar 150mm f/4 C mount
Carl Zeiss Jena Tevidon 10mm f/2.0 C mount
Carl Zeiss Jena Tevidon 16mm f/1.8 C mount
Docter Optics Tevidon 50mm f/1.8 C mount
Carl Zeiss Jena Tevidon 70mm f/2.8 C mount
Carl Zeiss Jena Tevidon 100mm f/2.8 C mount
Linos MeVis-C 35mm f/1.6
Linos MeVis-C 50mm f/1.8
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dickb
Joined: 04 Apr 2008 Posts: 821
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Posted: Fri Dec 09, 2016 10:29 pm Post subject: |
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dickb wrote:
And a final few, slightly less systematic..
All enlarger lenses I've tried with a focal length of 50mm or more covered full frame:
Carl Zeiss S-Planar 60mm f/4
Computar dL 55mm f/1.9
Some projector lenses I used, be aware that when focussing closer, the image circle gets larger. Also, I using improvised adapters, not properly aligned or anything.
Astro-Kino-Color IV 50mm f/1.4
Astro-Kino-Color IV 75mm f/1.6
Isco-Goettingen Cinelux Xenon 65mm f/1.6
SOM Berthiot Paris Cinor Projection 75mm f/1.5
And a few weird catadioptric lenses I was handholding in front of my Sony A7:
Canon CL 250mm f/4
Minolta Vectis 400mm f/8
The irregular vignetting is caused by the rear lens baffle, if I get around to making a proper adapter/conversion it will cover full frame. |
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Lightshow
Joined: 04 Nov 2011 Posts: 3666 Location: Calgary
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Posted: Fri Dec 09, 2016 11:28 pm Post subject: |
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Lightshow wrote:
Cool, I was thinking it might be useful to start a database with image circle measurements from slr and RF lenses for the coming proliferation of the mini medium format that's starting to become affordable, like the new Fuji GFX 50S. _________________ A Manual Focus Junky...
One photographers junk lens is an artists favorite tool.
My lens list
http://www.flickr.com/photos/lightshow-photography/ |
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Pancolart
Joined: 04 Feb 2008 Posts: 3702 Location: Slovenia, EU
Expire: 2013-11-18
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Posted: Sat Dec 10, 2016 5:03 pm Post subject: |
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Pancolart wrote:
Lightshow wrote: |
Cool, I was thinking it might be useful to start a database with image circle measurements from slr and RF lenses for the coming proliferation of the mini medium format that's starting to become affordable, like the new Fuji GFX 50S. |
+1 i am sure some DDR classic lenses go beyond full frame _________________ ---------------------------------
The Peculiar Apparatus Of Victorian Steampunk Photography: 100+ Genuine Steampunk Camera Designs https://www.amazon.com/dp/B0B92829NS |
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reMac
Joined: 18 Jul 2015 Posts: 20 Location: Spokane, Washington, USA
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Posted: Sat Dec 10, 2016 8:20 pm Post subject: |
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reMac wrote:
If you like square aspect ratio images (1:1), some lenses that are designed for smaller sensors can be used on larger sensor cameras if you crop out the vignetted areas. Of course you will be losing some of your megapixels, but that is no different than using a lens that covers the entire sensor and then cropping it square. |
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dickb
Joined: 04 Apr 2008 Posts: 821
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Posted: Fri Dec 16, 2016 4:00 pm Post subject: |
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dickb wrote:
And a few more:
Astro Kino Color IV 75/1.6
I haven't got a good adapter that allows infinity focus for this lens, so this may be a tiny bit tilted.
Meopta Meostigmat 70/1.4
Also this is just an indication of the image circle, the lens is not perfectly perpendicular to the sensor.
Rodenstock XR Heligon 100/1.5
I can't adapt this one in a way that allows infinity focus yet, this is the maximum focus distance at the moment. About 2 meters. |
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dickb
Joined: 04 Apr 2008 Posts: 821
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Posted: Tue Jan 17, 2017 2:16 pm Post subject: |
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dickb wrote:
And another one, the Schneider Kreuznach Cinegon 8mm f/1.4. This is a lens similar to the Xenoplans shown above, with the same 22mm to C-mount focussing adapter. This is a fixed aperture (f/2.0) version.
As you can see, this has a very small image circle. However, as I intend to use it reversed as an extreme macro lens that doesn't bother me too much:
A quick and dirty magnification test shows around 6mm filling the frame of my Sony A7, so I get a magnification of 6:1. The working distance is rather limited though.
I couldn't resist buying a few of these new in box, I'm selling one at the moment, see the marketplace section. |
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kds315*
Joined: 12 Mar 2008 Posts: 16625 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Tue Jan 17, 2017 2:20 pm Post subject: |
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kds315* wrote:
_________________ 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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dickb
Joined: 04 Apr 2008 Posts: 821
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Posted: Mon May 07, 2018 9:33 pm Post subject: |
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dickb wrote:
I have yet more toys to be tested:
Linos Mevis-C 16mm f/1.6:
A much smaller image circle than the other Mevis lenses I tested.
Schneider Apo Xenoplan 20mm f/2.0:
The rear of the lens is too wide to fit into my C mount adapter properly, so I can't get anywhere near infinity focus. It is clearly of of the anti-shading series, with a much larger image circle than most C mount 20mm lenses.
Schneider Apo Xenoplan 35mm f/2.0:
Its C mount focus adapter restricts the image circle a bit, the next one is without the C mount, with an M30 to M42 and M42 to Sony E adapter:
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Lightshow
Joined: 04 Nov 2011 Posts: 3666 Location: Calgary
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Posted: Mon May 07, 2018 11:36 pm Post subject: |
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Lightshow wrote:
Sticky? _________________ A Manual Focus Junky...
One photographers junk lens is an artists favorite tool.
My lens list
http://www.flickr.com/photos/lightshow-photography/ |
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Nordentro
Joined: 24 Jun 2010 Posts: 4713 Location: Lillehammer, Norway
Expire: 2015-01-29
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Posted: Tue May 08, 2018 9:32 am Post subject: |
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Nordentro wrote:
Nice thread...
Fujinon 75mm 1.8 c-mount on FF
_________________ Lars | Manuellfokus.no |
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dickb
Joined: 04 Apr 2008 Posts: 821
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Posted: Wed May 16, 2018 2:33 pm Post subject: |
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dickb wrote:
And another weird C mount lens, a Pentax TV zoom lens 8-48mm 1:1.0. Its wide C mount wouldn't fit in my C mount adapter, so I freelensed it. Please ignore the flare. As to be expected, it has a very small image circle, both at 8mm and 48mm
8mm
48mm
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cooltouch
Joined: 15 Jan 2009 Posts: 9096 Location: Houston, Texas
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Posted: Wed May 16, 2018 3:38 pm Post subject: |
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cooltouch wrote:
Wow, that Fujinon 75mm exhibits a remarkable amount of detail.
There are none on US eBay at the moment -- unfortunately _________________ Michael
My Gear List: http://michaelmcbroom.com/photo/gear.html
My Gallery: http://michaelmcbroom.com/gallery3/index.php/
My Flickr Page: https://www.flickr.com/photos/11308754@N08/albums
My Music: https://soundcloud.com/michaelmcbroom/albums
My Blog: http://michaelmcbroom.com/blogistan/ |
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dickb
Joined: 04 Apr 2008 Posts: 821
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Posted: Thu May 31, 2018 8:01 pm Post subject: |
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dickb wrote:
And two more projection lenses:
Schneider Kreuznach Super-Cinelux 2/50
Schneider Kreuznach Super-Cinelux 2/57.5
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e6filmuser
Joined: 12 Nov 2010 Posts: 819 Location: Reading UK
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Posted: Sat Jun 02, 2018 6:38 pm Post subject: |
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e6filmuser wrote:
This is a lens I normally use reversed, with a x1.5 TC (curved rear element) to overcome reflections between the front element and the sensor. On this occasion I used it without the TC and the reflections were not carried through to the image. The subject was a tiny (rock plant) lily flower. I think the FOV was ca 18mm wide.
Reversed Schneider Kreuznach 40mm F2.8 Apo Componon HM enlarging lens on A7R
_________________ Dedicated to using manual focus lenses with digital. Equiped for photography from macro to panoramic & from ultra-wide to extreme telephoto. Mostly shooting outdoor macro. Experienced entomological taxonomist. Some knowledge of mushrooms. |
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dickb
Joined: 04 Apr 2008 Posts: 821
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Posted: Sun Jun 03, 2018 10:12 am Post subject: |
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dickb wrote:
Does the SK 40mm f/2.8 cover 24x36 when used not reversed and focussed to infinity? |
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kds315*
Joined: 12 Mar 2008 Posts: 16625 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Sun Jun 03, 2018 10:36 am Post subject: |
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kds315* wrote:
e6filmuser wrote: |
This is a lens I normally use reversed, with a x1.5 TC (curved rear element) to overcome reflections between the front element and the sensor. On this occasion I used it without the TC and the reflections were not carried through to the image. The subject was a tiny (rock plant) lily flower. I think the FOV was ca 18mm wide.
Reversed Schneider Kreuznach 40mm F2.8 Apo Componon HM enlarging lens on A7R
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Excellent!!! _________________ 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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e6filmuser
Joined: 12 Nov 2010 Posts: 819 Location: Reading UK
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Posted: Sun Jun 03, 2018 12:11 pm Post subject: |
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e6filmuser wrote:
I wanted to use my Nikon Printing Nikkor 150mm on full frame. (No problem with the 105mm version).
The official image circle being 30mm, the corners are dark on the A7R. Using the newly-acquired Laowa Magic Shift Converter*, which incorporates a x1.4 TC, the problem is solved.
This is with a x2TC behind the extension to make f11, effectively, f16. Notice the slight vignetting in the corners.
A7R, Laowa Magic Shift Converter (centralised, used to widen the image circle), Nikon Printing-Nikkkor 105mm 2.8, f11 (effective f14), twin RC TTL Nissin Air flash.
* Affiliate link:
http://www.venuslens.net/product/laowa-magic-shift-converter/ref/140/ _________________ Dedicated to using manual focus lenses with digital. Equiped for photography from macro to panoramic & from ultra-wide to extreme telephoto. Mostly shooting outdoor macro. Experienced entomological taxonomist. Some knowledge of mushrooms. |
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e6filmuser
Joined: 12 Nov 2010 Posts: 819 Location: Reading UK
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Posted: Sun Jun 03, 2018 1:01 pm Post subject: |
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e6filmuser wrote:
Drifting away at a tangent from the original subject: It is one thing for a 35mm lens to fill the frame of the A7R but quite another for it to function as a shift lens. I have done some quick and dirty tests which established that the following Nikon AI mount lenses give full shift coverage on the A7R if connected via the Magic Shift Converter:
Laowa 12mm (MSC was designed for this lens)
Pentax-K SMC 15mm 3.5
Tamron SP 17mm 3.5
Nikon Nikkor 20mm 2.8
Nikon-N Auto 24mm 2.8
The only significant vignetting was from the hood on the 20mm.
The snag is that their focal lengths then function as 1.4 x the nominal. _________________ Dedicated to using manual focus lenses with digital. Equiped for photography from macro to panoramic & from ultra-wide to extreme telephoto. Mostly shooting outdoor macro. Experienced entomological taxonomist. Some knowledge of mushrooms. |
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