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dnas
 Joined: 14 Nov 2008 Posts: 489 Location: Japan
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Posted: Mon Oct 10, 2016 11:36 am Post subject: |
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dnas wrote:
| dnas wrote: |
Another option....
Since there are a variety of lenses mounts you mentioned, if you have an A7, then you can get a shift adapter, and use a variety of lenses with that adapter. |
| stevemark wrote: |
I thought about that as well, since i have a Mamyia C 3.5/35mm lens. But distortion and missing corner resolution (at 43MP FF) made me hesitate.
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You could use a Samyang 35mm F1.4
Centre is great straight up, and corner is very good from about F4 |
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dan_
 Joined: 05 Dec 2012 Posts: 1052 Location: Romania
Expire: 2016-12-19
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Posted: Mon Oct 10, 2016 2:29 pm Post subject: |
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dan_ wrote:
Samyang 35/1.4 is not a medium format lens and probably it doesn't have a large enough image circle to be used as a shift lens.
| stevemark wrote: |
| I thought about that as well, since i have a Mamyia C 3.5/35mm lens. But distortion and missing corner resolution (at 43MP FF) made me hesitate. |
I've tried the Pentax 645 35mm lens with a shift adapter and the results were quite good. I'm working now on fitting a shift adapter for it with E-mount for my Sony A7R2.
I have seen some time ago a comparison between some medium format 35mm lenses and the Pentax lens was considered the best 35mm for medium format (Mamiya and Hassy lenses included in the comparison). If you'll ever change your mind and reconsider trying this solution IMO the Pentax 645 35mm lens is the one to go for. |
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stevemark
 Joined: 29 Apr 2011 Posts: 3734 Location: Switzerland
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Posted: Mon Oct 10, 2016 7:07 pm Post subject: |
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stevemark wrote:
| dnas wrote: |
| dnas wrote: |
Another option....
Since there are a variety of lenses mounts you mentioned, if you have an A7, then you can get a shift adapter, and use a variety of lenses with that adapter. |
| stevemark wrote: |
I thought about that as well, since i have a Mamyia C 3.5/35mm lens. But distortion and missing corner resolution (at 43MP FF) made me hesitate.
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You could use a Samyang 35mm F1.4
Centre is great straight up, and corner is very good from about F4 |
The Mamiya Sekor C 3.5/35mm (as well as the corresponding Pentax 645 lens) is medium format lens with an image circle for the 4.5x6cm format, much larger than needed for FF DSLRs. Therefore there are shift adapters specially made for using these lenses on 24x36 FF DSLRS (eg by Zörk: http://www.zoerk.de/).
The Samyang 35mm 1.4 does not have a larger image circle; it cannot be shifted when using it on FF DSLRs, and therefore it is not suited for my needs.
Stephan _________________ www.artaphot.ch |
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stevemark
 Joined: 29 Apr 2011 Posts: 3734 Location: Switzerland
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Posted: Mon Oct 10, 2016 7:14 pm Post subject: |
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stevemark wrote:
| dan_ wrote: |
Samyang 35/1.4 is not a medium format lens and probably it doesn't have a large enough image circle to be used as a shift lens.
| stevemark wrote: |
| I thought about that as well, since i have a Mamyia C 3.5/35mm lens. But distortion and missing corner resolution (at 43MP FF) made me hesitate. |
I've tried the Pentax 645 35mm lens with a shift adapter and the results were quite good. I'm working now on fitting a shift adapter for it with E-mount for my Sony A7R2.
I have seen some time ago a comparison between some medium format 35mm lenses and the Pentax lens was considered the best 35mm for medium format (Mamiya and Hassy lenses included in the comparison). If you'll ever change your mind and reconsider trying this solution IMO the Pentax 645 35mm lens is the one to go for. |
The Pentax 645 FA 3.5/35mm (and probably also the Mamiya AF 3.5/35mm) certainly is better than the older MF versions. However, a used Pentax 645 FA 3.5/35mm lens plus the Zörk adapter would be much more expensive than the Zeiss PC Distagon which i got today. On friday i have the opportuity to test it.
Stephan _________________ www.artaphot.ch |
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dan_
 Joined: 05 Dec 2012 Posts: 1052 Location: Romania
Expire: 2016-12-19
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Posted: Mon Oct 10, 2016 7:50 pm Post subject: |
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dan_ wrote:
That's correct, Stephan. I already have the Pentax lens and that's why I consider using it as an adapted shift lens on E-mount. If I didn't have it and want a 35mm shift lens I'll buy the Zeiss, as you did. IMO it's the best option.
Have fun with your beautiful new lens! |
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stevemark
 Joined: 29 Apr 2011 Posts: 3734 Location: Switzerland
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Posted: Tue Oct 11, 2016 3:43 pm Post subject: |
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stevemark wrote:
| dan_ wrote: |
...
I already have the Pentax lens and that's why I consider using it as an adapted shift lens on E-mount. |
Yeah, then that's the "natural option" i would say ...
| dan_ wrote: |
Have fun with your beautiful new lens! |
Yes, the first shots using the A7 (24MP) look very promising. Completely usable at f2.8 even when fully shifted. Even the extreme corners, fully shifted, have less CA than the extreme corners of an ordinary 2.8/28mm lens (eg. Minolta MD-I 2.8/28mm or Canon FD 2.8/28mm)! Detail resolution (fully shifted, extreme corners) is good at f2.8 and excellent at f5.6. I expect this lens to be fully capable of using 50MP FF sensors, at least at f5.6 - f8. And that's what i wanted to have ...
Stephan _________________ www.artaphot.ch |
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stevemark
 Joined: 29 Apr 2011 Posts: 3734 Location: Switzerland
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Posted: Sun Oct 23, 2016 3:52 pm Post subject: |
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stevemark wrote:
I have been testing the PC Distagon inside a number of different churches, using the 24MP FF Sony A7.
at f2.8, fully shifted: visible coma causes softness in the corners, but overall detail resolution is quite OK, even in the extreme corners. Nearly no CAs, and little distortion. Usable if you have no bright objects near the corners (no windows, no light sources)
at f5.6, fully shifted: excellent resolution and contrast over most of the image (>90%); only the extreme corners fall short
at f8 / f11, fully shifted: Excellent resolution over the entire field, including the extreme corners. Nearly free from CAs. Very little distortion. Certainly capable of 36MP, 43MP and 50 MP FF sensors ...
Stephan _________________ www.artaphot.ch |
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stevemark
 Joined: 29 Apr 2011 Posts: 3734 Location: Switzerland
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Posted: Fri Oct 28, 2016 9:12 pm Post subject: |
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stevemark wrote:
| Himself wrote: |
Let me see if I understood correctly: you make money with photography and want to shoot architecturally, inside of a medieval church with a 35mm?
Am I missing something? |
Finally i can show a few images which should give you an idea of using
1) a 35mm Shift lens (Zeiss PC Distagon 2.8/35mm)
2) a 21mm superwide (Yashica ML 3.5/21mm)
3) a 17 mm Shift lens (Canon TS-E 4/17mm L)
I have chosen the Liebfrauen-Kirche in Zurich. While not a medieval church, it was built similar to classical basilicas, and its roof construction follows closely S. Miniato al Monte in Florence (12th century). Samples from medieval churches and / or roman basilicas will follow soon.
It is obvious that both the 21mm non-Shift as well as the 35mm Shift are as useful as an 17mm Shift.
Stephan
#1
#2
#3
 _________________ www.artaphot.ch |
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stevemark
 Joined: 29 Apr 2011 Posts: 3734 Location: Switzerland
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Posted: Tue Feb 07, 2017 10:16 am Post subject: |
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stevemark wrote:
| dnas wrote: |
| dnas wrote: |
Another option....
Since there are a variety of lenses mounts you mentioned, if you have an A7, then you can get a shift adapter, and use a variety of lenses with that adapter. |
| stevemark wrote: |
I thought about that as well, since i have a Mamyia C 3.5/35mm lens. But distortion and missing corner resolution (at 43MP FF) made me hesitate.
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You could use a Samyang 35mm F1.4
Centre is great straight up, and corner is very good from about F4 |
We are talking about 35mm SHIFT lenses here: They have an image circle of about 58-63mm. This corresponds to an angle of roughly 82-85°. The Samyang comes nowhere near to this angle, and it would not be suited for my intentions
Stephan _________________ www.artaphot.ch |
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stevemark
 Joined: 29 Apr 2011 Posts: 3734 Location: Switzerland
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Posted: Tue Feb 07, 2017 10:25 am Post subject: |
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stevemark wrote:
Two samples from the C/Y PC-Distagon 2.8/35mm, to illustrate its rather "uncomplicated" angle of view.
Quite often my clients prefer this view over the "exaggerated" Canon TS-E 4/17mm L views.
I consider an 28mm or 35mm Shift to be an ideal companion for the TS-E 17mm. Since the Zeiss is visibly better than its Canon / Nikon / Oly counterparts, i went for 35mm, even thought 28mm sometimes would be preferably.
Stephan _________________ www.artaphot.ch |
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tb_a
 Joined: 26 Jan 2010 Posts: 3677 Location: Austria
Expire: 2019-08-28
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Posted: Tue Feb 07, 2017 10:47 am Post subject: |
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tb_a wrote:
| stevemark wrote: |
| even thought 28mm sometimes would be preferably. |
Stephan, did you ever had or will have a chance to test the SMC Pentax SHIFT 28mm/F3.5?
I would be curios to see how it compares to your already tested ones..... _________________ Thomas Bernardy
Manual focus lenses mainly from Minolta, Pentax, Voigtlaender, Leitz, Topcon and from Russia (too many to be listed here). |
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stevemark
 Joined: 29 Apr 2011 Posts: 3734 Location: Switzerland
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Posted: Wed Feb 08, 2017 12:40 pm Post subject: |
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stevemark wrote:
| tb_a wrote: |
| stevemark wrote: |
| even though 28mm sometimes would be preferably. |
Stephan, did you ever had or will have a chance to test the SMC Pentax SHIFT 28mm/F3.5?
I would be curios to see how it compares to your already tested ones..... |
Yes, i did have the chance, but i did not have the time ... just after having bought the 35mm and 17mm shift lenses someone offered me a Pentax 28mm Shift. I simply did not expect it to be too good, especially since renowned manufacturers even were struggling with mere 35mm Shift lenses! If i would buy another Shift lens, it would be probably the TS-E 24mm L II.
Stephan _________________ www.artaphot.ch |
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europanorama
 Joined: 27 May 2012 Posts: 128
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Posted: Tue Mar 05, 2019 10:35 pm Post subject: |
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europanorama wrote:
| dnas wrote: |
| dnas wrote: |
Another option....
Since there are a variety of lenses mounts you mentioned, if you have an A7, then you can get a shift adapter, and use a variety of lenses with that adapter. |
| stevemark wrote: |
I thought about that as well, since i have a Mamyia C 3.5/35mm lens. But distortion and missing corner resolution (at 43MP FF) made me hesitate.
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You could use a Samyang 35mm F1.4
Centre is great straight up, and corner is very good from about F4 |
I cannot imagine any 35/1.4 lens other than Zeiss(Contax/Yashica) getting the quality the Distagon can deliver. wideopen and at f2.0.
I have the PC-Distagon 35/2.8 but no DSRL-experience. shot flash-images at f2.8. stage: Wow
Zeiss has two prototypes Apo PC-Distagon 25/3.5 (too expensive to produce) should still be online on an italian site or on archive.org.
and there was a 18mm- PC for cine. on a Zeiss historical site. have data somewhere lot of prototypes.
Best idea is using Hcam-doubleshifter, yes also for Fuji GFX. _Steib said there are better lenses for it than canon 17mm shift. not sharp in corners.
Zoerk made a M645 50mm(PC-version) for hasselblad and a 35mm M645 for FF with 20mm shift!
PC-Distagon 35/2.8 has 63mm image-circle. on GFX with cropped sensor 33x 33mm 5mm shift should be possible. not much. maybe i am wrong.
28mm PC-Superangulon not that good, the same for the nikkor pc-28mm.
lets wait what NSW will provide. new affordable Hightec HQ lenses for all formats and new cam-system google fotointern.ch
and there will be much more coming from china. Cams, lenses also rotapancam(s). a trustful source told me. _________________ mpa |
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