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mo
Joined: 27 Aug 2009
Posts: 8979
Location: Australia
Expire: 2016-07-30
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 Posted: Sun Feb 07, 2010 3:01 am Post subject: Sun YS 70-210 zoom |
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mo wrote:
Hi Can anyone tell me why there are dark edges on these photos is it because of the hood or something worse?Just a note for all you suffering from the cold this was a 40 degree day and I was worried about the lens sweating!!
@70
@210
Closer (we moved closer that is  )
Closest
Same lens but different View with vegetation...note the bottom right corner is this an error with the lens? I was resting it on a bridge rail.
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Moira, Moderator 
Fuji XE-1,Pentax K-01,Panasonic G1,Panasonic G5,Pentax MX
Ricoh Singlex TLS,KR-5,KR-5Super,XR-10
Lenses
Auto Rikenon's 55/1.4, 1.8, 2.8... 50/1.7 Takumar 2/58 Preset Takumar 2.8/105 Auto Takumar 2.2/55, 3.5/35 Super Takumar 1.8/55...Macro Takumar F4/50... CZJ Biotar ALU M42 2/58 CZJ Tessar ALU M42 2.8/50
CZJ DDR Flektogon Zebra M42 2.8/35 CZJ Pancolar M42 2/50 CZJ Pancolar Exakta 2/50
Auto Mamiya/Sekor 1.8/55 ...Auto Mamiya/Sekor 2/50 Auto Mamiya/Sekor 2.8/50 Auto Mamiya/Sekor 200/3.5 Tamron SP500/8 Tamron SP350/5.6 Tamron SP90/2.5
Primoplan 1.9/58 Primagon 4.5/35 Telemegor 5.5/150 Angenieux 3.5/28 Angenieux 3,5/135 Y 2
Canon FL 58/1.2,Canon FL85/1.8,Canon FL 100/3.5,Canon SSC 2.8/100 ,Konica AR 100/2.8, Nikkor P 105/2.5
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estudleon
Joined: 15 May 2008
Posts: 3754
Location: Argentina
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| Posted: Sun Feb 07, 2010 3:29 am Post subject: |
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estudleon wrote:
It seems to be the shade (not lens vigneting), but did you try any pic without the shade?.
If you haven't film in the cam, put at the film place a piece of ground glass, and with the lens focus to the sky. Not use the shade. Any vignetting? Not the lens shade. To confirm you can use the shade and see if vignetting. That's easy and will be enought.
Good luck. Rino.
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Asahi pentax spotmatic super takumar 1,4/50
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Leica R3 electronic summicron 2/50 elmarit 2,8/35
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Rolleiflex SL35 and SL35 E. 2,8/35 angulon, 2,8/35 distagon, 1,4/55 rolleinar, 1,8/50 planar, 4/135 tessar, 2,8/135 rolleinar, x2 rollei, M42 to rollei adap.
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mo
Joined: 27 Aug 2009
Posts: 8979
Location: Australia
Expire: 2016-07-30
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| Posted: Sun Feb 07, 2010 3:36 am Post subject: |
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mo wrote:
I used the hood on all shots as it was a very sunny day.What would ground glass be?I have a front element from a broken lens I can use? or do you mean a neutral piece of glass.. such as a flat piece?
Thanks for the tip.
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Moira, Moderator
Fuji XE-1,Pentax K-01,Panasonic G1,Panasonic G5,Pentax MX
Ricoh Singlex TLS,KR-5,KR-5Super,XR-10
Lenses
Auto Rikenon's 55/1.4, 1.8, 2.8... 50/1.7 Takumar 2/58 Preset Takumar 2.8/105 Auto Takumar 2.2/55, 3.5/35 Super Takumar 1.8/55...Macro Takumar F4/50... CZJ Biotar ALU M42 2/58 CZJ Tessar ALU M42 2.8/50
CZJ DDR Flektogon Zebra M42 2.8/35 CZJ Pancolar M42 2/50 CZJ Pancolar Exakta 2/50
Auto Mamiya/Sekor 1.8/55 ...Auto Mamiya/Sekor 2/50 Auto Mamiya/Sekor 2.8/50 Auto Mamiya/Sekor 200/3.5 Tamron SP500/8 Tamron SP350/5.6 Tamron SP90/2.5
Primoplan 1.9/58 Primagon 4.5/35 Telemegor 5.5/150 Angenieux 3.5/28 Angenieux 3,5/135 Y 2
Canon FL 58/1.2,Canon FL85/1.8,Canon FL 100/3.5,Canon SSC 2.8/100 ,Konica AR 100/2.8, Nikkor P 105/2.5
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visualopsins
Joined: 05 Mar 2009
Posts: 10700
Location: California
Expire: 2025-04-11
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| Posted: Sun Feb 07, 2010 4:20 am Post subject: |
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visualopsins wrote:
Ground glass: http://www.dokasphotos.com/techniques/ground_glass/
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mo
Joined: 27 Aug 2009
Posts: 8979
Location: Australia
Expire: 2016-07-30
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| Posted: Sun Feb 07, 2010 4:44 am Post subject: |
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mo wrote:
Thanks I would have had no idea otherwise ...does the thickness need to be precise?
_________________
Moira, Moderator
Fuji XE-1,Pentax K-01,Panasonic G1,Panasonic G5,Pentax MX
Ricoh Singlex TLS,KR-5,KR-5Super,XR-10
Lenses
Auto Rikenon's 55/1.4, 1.8, 2.8... 50/1.7 Takumar 2/58 Preset Takumar 2.8/105 Auto Takumar 2.2/55, 3.5/35 Super Takumar 1.8/55...Macro Takumar F4/50... CZJ Biotar ALU M42 2/58 CZJ Tessar ALU M42 2.8/50
CZJ DDR Flektogon Zebra M42 2.8/35 CZJ Pancolar M42 2/50 CZJ Pancolar Exakta 2/50
Auto Mamiya/Sekor 1.8/55 ...Auto Mamiya/Sekor 2/50 Auto Mamiya/Sekor 2.8/50 Auto Mamiya/Sekor 200/3.5 Tamron SP500/8 Tamron SP350/5.6 Tamron SP90/2.5
Primoplan 1.9/58 Primagon 4.5/35 Telemegor 5.5/150 Angenieux 3.5/28 Angenieux 3,5/135 Y 2
Canon FL 58/1.2,Canon FL85/1.8,Canon FL 100/3.5,Canon SSC 2.8/100 ,Konica AR 100/2.8, Nikkor P 105/2.5
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luisalegria
Joined: 07 Mar 2008
Posts: 6602
Location: San Francisco, USA
Expire: 2018-01-18
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| Posted: Sun Feb 07, 2010 5:29 am Post subject: |
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luisalegria wrote:
Nice shots, 4 and 5 work very well. Maybe PP a bit more contrast in 5
Groundglass thickness doesn't matter if the ground (matte) surface is flush against the film plane, where the film would be.
Alternately wax paper or Scotch tape can work too, if you can stick them down tight.
Rino is correct, you should be able to tell just by checking with and without the hood. The film plane check with groundglass, etc. would be extra.
What aperture did you use for these ?
My guess is the lens (hood or not) may indeed be vignetting at larger apertures. The circle of coverage is smallest at large apertures and focus at infinity - your samples are all at infinity pretty much. See if you get the same effects if you stop down to f/16.
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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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mo
Joined: 27 Aug 2009
Posts: 8979
Location: Australia
Expire: 2016-07-30
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| Posted: Sun Feb 07, 2010 6:44 am Post subject: |
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mo wrote:
The river shot is F16 speed 250
Here is a link to my other thread about the YS the cat shot would have been closer but unsure of the F stop
http://forum.mflenses.com/sun-zoom-70-210-what-mount-t22448.html
I don't have any PP software other than what comes with windows live gallery or anything in Gimp which I am playing with.Unsure on a lot to do with the "how to" of PP'ing a photo....for the moment I am focusing on getting the exposure right.  and using different films ie iso 100 compared to 200/400 and then a little B&W and down the track maybe some slide film, until I can get a DSLR to try these lenses out on.
_________________
Moira, Moderator
Fuji XE-1,Pentax K-01,Panasonic G1,Panasonic G5,Pentax MX
Ricoh Singlex TLS,KR-5,KR-5Super,XR-10
Lenses
Auto Rikenon's 55/1.4, 1.8, 2.8... 50/1.7 Takumar 2/58 Preset Takumar 2.8/105 Auto Takumar 2.2/55, 3.5/35 Super Takumar 1.8/55...Macro Takumar F4/50... CZJ Biotar ALU M42 2/58 CZJ Tessar ALU M42 2.8/50
CZJ DDR Flektogon Zebra M42 2.8/35 CZJ Pancolar M42 2/50 CZJ Pancolar Exakta 2/50
Auto Mamiya/Sekor 1.8/55 ...Auto Mamiya/Sekor 2/50 Auto Mamiya/Sekor 2.8/50 Auto Mamiya/Sekor 200/3.5 Tamron SP500/8 Tamron SP350/5.6 Tamron SP90/2.5
Primoplan 1.9/58 Primagon 4.5/35 Telemegor 5.5/150 Angenieux 3.5/28 Angenieux 3,5/135 Y 2
Canon FL 58/1.2,Canon FL85/1.8,Canon FL 100/3.5,Canon SSC 2.8/100 ,Konica AR 100/2.8, Nikkor P 105/2.5
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