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lowersaxonguy
Joined: 31 Aug 2011
Posts: 122
Location: lowersaxony
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 Posted: Wed Feb 18, 2015 3:51 pm Post subject: Pics taken with Soligor 250mm, 4,5 M 42 |
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lowersaxonguy wrote:
Pics taken @4,5 with Pentax k100D M42 Adapter
More pics taken with the Soligor 250mm lens:
https://www.flickr.com/photos/mopedfahrer/sets/72157650835786025/ |
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luisalegria
Joined: 07 Mar 2008
Posts: 6627
Location: San Francisco, USA
Expire: 2018-01-18
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| Posted: Wed Feb 18, 2015 4:16 pm Post subject: |
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luisalegria wrote:
I would check for haze on internal element.
You should be getting better contrast than this.
Also, are you using a hood? Very important.
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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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lowersaxonguy
Joined: 31 Aug 2011
Posts: 122
Location: lowersaxony
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| Posted: Wed Feb 18, 2015 4:48 pm Post subject: flare |
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lowersaxonguy wrote:
thks for u comment. I didnt use a telphoto hood, have to look for one. May be flare comes from internal problem have to check . |
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marcusBMG
Joined: 07 Dec 2012
Posts: 1304
Location: Conwy N Wales
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| Posted: Wed Feb 18, 2015 5:27 pm Post subject: Flare/foggy pics with soligor 250mm |
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marcusBMG wrote:
Funniliy enough I was just about to start a thread complaining about flare/foggy pics with one of these. This is my lens:
serial 971xxxx. And here's a sample pic:
Even resized the contrast is horrible. Nor was the shot particularly backlit. Using my biggest rubber hood made little difference.
I cleaned the lens a bit when I first got it, it's still rather dusty but I don't see any haze (or fungus) which is usually the cause of a pic like this. I do see the torchlight reflecting internally off the walls of the lens.
What do you think?
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pentax ME super (retired)
Pentax K3-ii; pentax K-S2; Samsung NX 20; Lumix G1 + adapters;
Adaptall collection (proliferating!) inc 200-500mm 31A, 300mm f2.8, 400mm f4.
Primes: takumar 55mm; smc 28mm, 50mm; kino/komine 28mm f2's, helios 58mm, Tamron Nestar 400mm, novoflex 400mm, Vivitar 135mm close focus, 105mm macro; Jupiter 11A; CZJ 135mm.
A classic zoom or two: VS1 (komine), Kiron Zoomlock... |
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luisalegria
Joined: 07 Mar 2008
Posts: 6627
Location: San Francisco, USA
Expire: 2018-01-18
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| Posted: Wed Feb 18, 2015 5:54 pm Post subject: |
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luisalegria wrote:
It may not be the same lens.
There are at least 6 different Soligor 250mm primes, preset or auto.
And I don't own all of them, so I cant answer for all.
The usual reason for contrast problems like these is haze on an internal element. Sometimes it can be difficult to see.
It is necessary step in initial inspection to shine a bright light from both front and back, as nothing else will be sure to reveal some forms of haze.
Some APS-C and 4/3 cameras seem to be more vulnerable to problems with internal reflections not in the lens but in the camera. Several people here have recommended adding a black paper mask (a rectangular shape) at the mount end of the lens to reduce the projected image circle to block stray light. I believe they may have said this problem is worse with tele lenses.
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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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luisalegria
Joined: 07 Mar 2008
Posts: 6627
Location: San Francisco, USA
Expire: 2018-01-18
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| Posted: Wed Feb 18, 2015 6:30 pm Post subject: |
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luisalegria wrote:
Hi Marcus,
This one I have seems to be your lens
http://forum.mflenses.com/soligor-tokina-250-4-5-t-mount-t9790,highlight,%2Bsoligor.html
Haven't used it in quite a long time, but I don't recall any contrast problems.
I need to try dig it up.
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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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lowersaxonguy
Joined: 31 Aug 2011
Posts: 122
Location: lowersaxony
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| Posted: Wed Feb 18, 2015 8:55 pm Post subject: Sof focus |
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lowersaxonguy wrote:
If it would be labeled as nikon it would an expensive soft focus lens -)) |
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AstroZon
Joined: 13 Jul 2014
Posts: 172
Location: Colorado Springs
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| Posted: Wed Feb 18, 2015 11:49 pm Post subject: Re: Pics taken with Soligor 250mm, 4,5 M 42 |
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AstroZon wrote:
Nice picture!
| lowersaxonguy wrote: |
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marcusBMG
Joined: 07 Dec 2012
Posts: 1304
Location: Conwy N Wales
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| Posted: Sat Feb 21, 2015 5:18 pm Post subject: |
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marcusBMG wrote:
Luis your remark about baffles reminded me I had come across this web site some time ago (it's in French so I have posted a google translate link):
https://translate.google.co.uk/translate?sl=fr&tl=en&js=y&prev=_t&hl=en&ie=UTF-8&u=http%3A%2F%2Fwww.street-photo.fr%2Ffr%2Fmateriel%2F27%2F35&edit-text=
I had in fact acquired a compass cutter for the purpose as well, and this morning some black sticky back felt arrived. So:
update and see this forum discussion
http://forum.fourthirdsphoto.com/threads/57126-Legacy-lens-baffle-size
I stuck the baffle on the end of the t-mount thread on the soligor 250mm, and took a few shots on my G1 to test. These are centre crops, resized to 800px f4.5.
The difference is clear. I am certainly prompted to continue experimenting. I have, first up, put a baffle in my PK to MFT adapter. With my fastest 50mm there was no vignetting, but with the Palinar 300mm there was! That's the trouble, you need baffles customised for each lens really.
Overall I am already fed up with the 250mm and am selling it on!
_________________
pentax ME super (retired)
Pentax K3-ii; pentax K-S2; Samsung NX 20; Lumix G1 + adapters;
Adaptall collection (proliferating!) inc 200-500mm 31A, 300mm f2.8, 400mm f4.
Primes: takumar 55mm; smc 28mm, 50mm; kino/komine 28mm f2's, helios 58mm, Tamron Nestar 400mm, novoflex 400mm, Vivitar 135mm close focus, 105mm macro; Jupiter 11A; CZJ 135mm.
A classic zoom or two: VS1 (komine), Kiron Zoomlock... |
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luisalegria
Joined: 07 Mar 2008
Posts: 6627
Location: San Francisco, USA
Expire: 2018-01-18
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| Posted: Sun Feb 22, 2015 12:14 am Post subject: |
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luisalegria wrote:
That's quite a difference indeed.
What camera is that ?
This may be a necessary fix for a lot of lenses on certain cameras.
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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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ManualFocus-G
Joined: 29 Dec 2008
Posts: 6624
Location: United Kingdom
Expire: 2014-11-24
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| Posted: Sun Feb 22, 2015 12:24 am Post subject: |
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ManualFocus-G wrote:
I have the t4 version of this lens on eBay at the moment. Will pop some samples up later, I was surprised at how well it performs on full frame...
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Shooter of choice: Fujifilm X-T20 with M42, PB and C/Y lenses
See my Flickr photos at http://www.flickr.com/photos/manualfocus-g |
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luisalegria
Joined: 07 Mar 2008
Posts: 6627
Location: San Francisco, USA
Expire: 2018-01-18
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| Posted: Sun Feb 22, 2015 1:01 am Post subject: |
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luisalegria wrote:
Ah, sorry, missed it, G1.
Possibly this may be a problem with mirrorless.
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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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lowersaxonguy
Joined: 31 Aug 2011
Posts: 122
Location: lowersaxony
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ManualFocus-G
Joined: 29 Dec 2008
Posts: 6624
Location: United Kingdom
Expire: 2014-11-24
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| Posted: Sun Feb 22, 2015 9:08 am Post subject: |
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ManualFocus-G wrote:
Here's the one I've got:
Taken on my Canon EOS 6D:
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Graham - Moderator
Shooter of choice: Fujifilm X-T20 with M42, PB and C/Y lenses
See my Flickr photos at http://www.flickr.com/photos/manualfocus-g |
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marcusBMG
Joined: 07 Dec 2012
Posts: 1304
Location: Conwy N Wales
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| Posted: Sun Feb 22, 2015 2:11 pm Post subject: |
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marcusBMG wrote:
| luisalegria wrote: |
Ah, sorry, missed it, G1.
Possibly this may be a problem with mirrorless. |
The earlier pic of the gulls was on my pentax K5. And here are some more quick experimentations (all wide open, OtC from raw, resized):
1. lens only
2. + hood
3. + baffle. Clear vignetting - should enlarge the centre of the baffle. Shutter speed fell one stop.
4. + baffle + hood
BTW I really recommend reading WYSIWYG's contributions to the thread on fourthirdsphoto I posted a link to - distinctions between an aperture stop, field stop and a baffle.
_________________
pentax ME super (retired)
Pentax K3-ii; pentax K-S2; Samsung NX 20; Lumix G1 + adapters;
Adaptall collection (proliferating!) inc 200-500mm 31A, 300mm f2.8, 400mm f4.
Primes: takumar 55mm; smc 28mm, 50mm; kino/komine 28mm f2's, helios 58mm, Tamron Nestar 400mm, novoflex 400mm, Vivitar 135mm close focus, 105mm macro; Jupiter 11A; CZJ 135mm.
A classic zoom or two: VS1 (komine), Kiron Zoomlock... |
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Pancolart
Joined: 04 Feb 2008
Posts: 3693
Location: Slovenia, EU
Expire: 2013-11-18
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| Posted: Sun Feb 22, 2015 5:16 pm Post subject: |
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Pancolart wrote:
Stunning job again, Graham. Thanks for sharing.
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lowersaxonguy
Joined: 31 Aug 2011
Posts: 122
Location: lowersaxony
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| Posted: Sun Feb 22, 2015 6:23 pm Post subject: ManualFocus-G |
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lowersaxonguy wrote:
it works fine and has a trip mount too. |
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