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stevemark
Joined: 29 Apr 2011 Posts: 3754 Location: Switzerland
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Posted: Mon Apr 03, 2017 7:54 am Post subject: |
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stevemark wrote:
Antoine wrote: |
I know vintage lenses are often not CA corrected. For 400-500 mm, I have very compact solutions:
- Minolta 500mm f/8 RF : no CA as mirror lens 635 grams
- Minolta 200mm f/2.8 (700 g) + MD 2* 300 S (210g) e.g. 910g in total for a 400mm f5.6 with CA
...
Since the 2* 300 S picks the centre of the picture (plus I have a APS-C), would be interesting to know how this performs against more "professional" solutions (any input Stephan?) and also how the mirror performs against normal lenses |
Interesting question in fact. I must admit that i'm probably not the right person to answer since i'm not really into large tele lenses. Nevertheless i can share my limited experience.
Good (!) mirror lenses in the 500mm range are in fact a valid alternativ to large APO teles if one does distant landscapes without foreground. Even though most mirror lenses do have some CAs, these CAs are in the range of vintage (1975-1985) L / ED / APO glass. The best 500mm mirror i have is the Nikkor 8/500mm "new" from 1985 which focuses down to 1.5m. The Tamron 8/500mm comes close, but has a bit less contrast. Also the Minolta RF 8/500mm comes close to the Nikkor - a bit more CA and vignetting, but less fiddly to focus than the Nikkor.
Cheap "third party" 400 ... 500mm lenses are often surprisingly useful for animal photography since they can be really sharp in the center, and bokeh is much better than with any 500mm RF lens, of course. I would include "converter" solutions here, but my experience is limited; the only converter i regularly use is the Sony AL 1.4x APO converter together with the Minolta 2.8/200 APO and 2.8/300 APO lenses.
Meaningful tests in the 400mm range are quite cumbersome, in fact:
1) Tripod and related oscillations
2) rare days with clear view
3) usually it's windy on clear days => you can litteraly see air vortexes coming down the mountains (!!) => no reliable testing
4) mechanical troubles with adapters
5) focusing problems (e. g. the Nikkor RF 8/500mm "new" is nearly impossible to focus precisely, coz focusing is much too steep)
That's why i never published tests in the 400 - 1000mm range, even though i have done some.
Stephan _________________ www.artaphot.ch |
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Antoine
Joined: 08 Jan 2016 Posts: 298 Location: London
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Posted: Mon Apr 03, 2017 11:50 am Post subject: |
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Antoine wrote:
Thanks Stephan. Very good advice (donut / bokey, low CA/high CA).
These are difficult to use without a tripod...I just try to push the ISO.
I took a picture through the window (may affect the quality plus I downsized it to 840 kbytes) two days ago.[/url] _________________ Antoine
Sony A6000 APS-C and Sony A7 Rii
Minolta Fisheye MD Rokkor 7.5 mm f4, Fisheye MD 16 f2.8 MD R 17mm f4, MD R 20mm f2.8, MC VFC & MDIII 24mm f2.8, MD 28mm f2.0 &3.5, MD II 35mm 1.8, MD 45mm f2.0, MD 50mm f 1.2 & MD I f1.4, MC PG 58mm 1.2, MD 85mm f2.0, MD R 85mm f2.8 Varisoft, MC 85mm f1.7 MD R 100mm f2.5, MD R 100mm f4.0 macro, MD III 135mm f2.8, MD R 200mm f2.8 & 4.0, RF 250mm f5.6, MD 300mm f4.5, MD APO 400 mm f5.6, RF 500mm f8.0, RF 800mm f8.0 *2 300-s and 300-l
100 mm f4 macro bellows (5/4)
Vivitar 17mm f3.5, Elicar 300mm mirror f5.6, Zhongi turbo ii
Sigma 16mm f 2.8 fish eye
Zooms:24-50 mm f4, 35-70 mm f3.5 macro, 28-85mm f3.5-4.5, 50-135 f 3.5, 70-210 f4 and MD APO 100-500 mm f8 |
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woodrim
Joined: 14 Jan 2010 Posts: 4060 Location: Charleston
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Posted: Sat Apr 15, 2017 6:38 pm Post subject: |
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woodrim wrote:
UPDATE - I think for now I have solved my 400mm lens issue and search. I'll still use the Novoflex on occasion (when I feel strong) because it's a pretty good lens. The Osawa I bought is okay stopped down, is extremely light, and has internal focusing, but even stopped down it doesn't match the Novo wide open at f/5.6. However, I must give the Osawa another try with a tripod. The lack of weight actually makes it harder to steady.
A couple from the Osawa...
Same turtle with Meyer and cropped...
My solution turned out to be a lens I already had. I've been back to the swamp twice now with my Meyer Orestegor 4/300. I had stopped using it a few years ago because of its size and weight, but it's a little easier to lug around than the Novo. Still, a tripod is best. I was out to the swamp yesterday with the Meyer and while it was difficult to steady handheld and hard to get exact focus when bobbing around, I did get some good shots. I took some wide open and some a little stopped down, but of course, I have no record. It's pretty good from wide open and focusing is more critical than stopping down. Here are some from the Meyer, cropped for 400mm reach...
I have also just purchased a Maksutov 3M-6A 6.3/500mm Mirror which should get me right into the nest. Hoping it is sharp enough. _________________ Regards,
Woodrim |
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luisalegria
Joined: 07 Mar 2008 Posts: 6627 Location: San Francisco, USA
Expire: 2018-01-18
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Posted: Sat Apr 15, 2017 7:52 pm Post subject: |
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luisalegria wrote:
Excellent work there Woodrim! _________________ I like Pentax DSLR's, Exaktas, M42 bodies of all kinds, strange and cheap Japanese lenses, and am dabbling in medium format/Speed Graphic work. |
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kds315*
Joined: 12 Mar 2008 Posts: 16541 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Mon Oct 29, 2018 6:34 pm Post subject: |
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kds315* wrote:
Got the SIGMA f5.6/400mm CAT lens...
Not that shappy for a CAT lens actually... _________________ 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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woodrim
Joined: 14 Jan 2010 Posts: 4060 Location: Charleston
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Posted: Mon Oct 29, 2018 7:18 pm Post subject: |
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woodrim wrote:
Excellent results (for a cat). _________________ Regards,
Woodrim |
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