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dickb
Joined: 04 Apr 2008
Posts: 821
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 Posted: Fri Nov 16, 2018 9:24 pm Post subject: Autumn colours with Robot Xenon 40mm f/1.9 |
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dickb wrote:
I'm having fun with some new lenses (well new to me that is). In this case a Robot Xenon 40mm f/1.9 in M26 thread mount. I don't have a proper adapter for it, just an adapter from M26 to M42 and a helicoid M42 to Sony E mount. This doesn't allow infinity focus exactly, but I do get very close up.. Anyway, the amount of vignetting is not too bad considering this is a 24*36mm sensor on my Sony A7:
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wolan
Joined: 30 Jun 2015
Posts: 576
Location: Zurich
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| Posted: Fri Nov 16, 2018 10:12 pm Post subject: |
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wolan wrote:
 
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https://www.flickr.com/photos/149089857@N03/ |
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dickb
Joined: 04 Apr 2008
Posts: 821
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| Posted: Sat Nov 17, 2018 9:38 pm Post subject: |
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dickb wrote:
This lens does benefit from a lens hood under certain circumstances, in photo 2 I was overambitious in shielding the lens from the sun with my hand, hence the dark spot in the upper left hand corner. All the photos are at f/1.9.
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kds315*
Joined: 12 Mar 2008
Posts: 16627
Location: Weinheim, Germany
Expire: 2021-03-09
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| Posted: Sat Nov 17, 2018 9:51 pm Post subject: |
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kds315* wrote:
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"S'il vient a point, me souviendra" [Thomas Bohier (1460-1523)]
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newst
Joined: 21 Oct 2014
Posts: 617
Location: Troy, MI USA
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| Posted: Sat Nov 17, 2018 9:55 pm Post subject: |
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newst wrote:
Funny coincidence, I just took the same lens out on a Sony A6500 for some fall color shots. Schneider-Kreuznach Xenon 1.9/40, ROBOT to L39 adapter, LTM to Sony E adapter.
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Steve
Just an armadillo on the shoulder of the information superhighway. |
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dickb
Joined: 04 Apr 2008
Posts: 821
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| Posted: Sun Nov 18, 2018 7:41 pm Post subject: |
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dickb wrote:
Steve, is yours the m26 or the Robot Royal mount variant? |
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newst
Joined: 21 Oct 2014
Posts: 617
Location: Troy, MI USA
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| Posted: Sun Nov 18, 2018 7:59 pm Post subject: |
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newst wrote:
| dickb wrote: |
| Steve, is yours the m26 or the Robot Royal mount variant? |
It is M26. I never saw the need to pay the extra premium prices for the Royal lenses and adapters.
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Steve
Just an armadillo on the shoulder of the information superhighway. |
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dickb
Joined: 04 Apr 2008
Posts: 821
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| Posted: Sun Nov 18, 2018 9:36 pm Post subject: |
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dickb wrote:
| newst wrote: |
| dickb wrote: |
| Steve, is yours the m26 or the Robot Royal mount variant? |
It is M26. I never saw the need to pay the extra premium prices for the Royal lenses and adapters. |
Thanks. I wasn't aware Royal commanded extra premium prices. I encounter more Robot Royal than Robot M26 lenses. But for an APS-C camera either may work equally well. I was asking since vignetting may vary between the mounts, especially on full frame cameras like mine. |
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newst
Joined: 21 Oct 2014
Posts: 617
Location: Troy, MI USA
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| Posted: Sun Nov 18, 2018 10:06 pm Post subject: |
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newst wrote:
The Royal camera was produced in a half frame (ROBOT 24) and a full frame (Royal 36) version. Royal lenses were designed to cover the full frame circle.
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Steve
Just an armadillo on the shoulder of the information superhighway. |
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dickb
Joined: 04 Apr 2008
Posts: 821
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| Posted: Mon Nov 19, 2018 4:23 pm Post subject: |
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dickb wrote:
I know about the different film sizes between Robot 24 and 36 cameras. I am not sure the m26 version of a lens is necessarily optically different from the Royal version. In some cases at least I expect the lenses to be identical apart from the mount, and the smaller mount may introduce vignetting when used on a full frame camera. This was very clearly the case with a 150/4 Tele Xenar I once had in both Royal and C mount, massive mechanical vignetting on the C mount version.
BTW, Royal mount lenses may be designed for full frame, but at least my 37.5mm Xenar has trouble with its corners, other wider angles may as well:
http://forum.mflenses.com/robot-royal-schneider-tele-xenar-lenses-a-walk-in-the-park-t79023.html |
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