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Pancolart
Joined: 04 Feb 2008
Posts: 3704
Location: Slovenia, EU
Expire: 2013-11-18
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 Posted: Sat Jul 23, 2011 12:32 pm Post subject: CANON FD S.C. 1.8/50mm on 5DmkII & crazy center swirl |
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Pancolart wrote:
Well it's adapted version. I removed aperture and move front elements group closer to rear one for few mm. Now infinity is easily reached without mirror being hit.
I love how lens performs but on some occasions it produces center swirl like on sample bellow. Do you think that is normal for this lens or a byproduct of a bit changed design?
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Last edited by Pancolart on Mon Jun 02, 2014 6:25 pm; edited 3 times in total |
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Spotmatic
Joined: 18 Aug 2008
Posts: 4045
Location: Netherlands
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| Posted: Sat Jul 23, 2011 12:40 pm Post subject: |
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Spotmatic wrote:
Since the center is now more unsharp than the corners, I think that its performance is greatly affected. You didn't flip an element upside down while re-assembling it? It is not normal for any lens I have seen.
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Peter - Moderator
Pentax K-5 + Pentax 645 + Canon 5D + Bessa RF 10,5cm Heliar, and a 'little' bag full of MF lenses. The lens list is * here *.
My fast 80s: Asahi-Kogaku Takumar 83mm f/1.9 - Super-Takumar 85mm f/1.9 - FA 77mm f/1.8 Limited - Cyclop 85/1.5 (Helios-40 innards) - Komura 80mm f/1.8 - Meyer Görlitz Primoplan 7,5cm 1:1.9 - Carl Zeiss Jena 80mm f/1.8 Pancolar - Canon 85mm f/1.8 S.S.C. - Canon 85mm f/1.2 S.S.C. Aspherical |
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Pancolart
Joined: 04 Feb 2008
Posts: 3704
Location: Slovenia, EU
Expire: 2013-11-18
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| Posted: Sat Jul 23, 2011 1:14 pm Post subject: |
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Pancolart wrote:
Though is does look strange, lens performs very well in most conditions and is assembled correctly for sure (only between groups distance is changed).
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The Peculiar Apparatus Of Victorian Steampunk Photography: 100+ Genuine Steampunk Camera Designs https://www.amazon.com/dp/B0B92829NS
Last edited by Pancolart on Mon Jun 02, 2014 6:25 pm; edited 1 time in total |
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Riku
Joined: 23 May 2007
Posts: 1059
Location: Finland
Expire: 2017-04-30
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| Posted: Sat Jul 23, 2011 3:19 pm Post subject: |
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Riku wrote:
Just enjoy a lens that is unique. Any 50mm will be sharp enough... |
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tikkathree
Joined: 19 Jun 2010
Posts: 755
Location: Lovely Suffolk in Great Britain
Expire: 2012-12-28
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| Posted: Sat Jul 23, 2011 3:37 pm Post subject: |
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tikkathree wrote:
If it were mine I'd be looking ascance at my glazed adapter, thinking hmmmm, trying an unglazed adapter, checking for finger prints on the glass etc.
But yours has been converted so doesn't need an adapter?
If it doesn't stand you very much money, I'd agree with otheres: you've got a special effect lens 
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I used to think digital was fun but then I discovered film, then I found old lenses and then, eventually I found rangefinders.
EOS 5DII, loadsalenses
Canon G9 IR conv,
MF: TLR, 645 and folders
35mm: Oly OM Pro bodies 1, 2, 3 and 4; Soviet RF kit |
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Pancolart
Joined: 04 Feb 2008
Posts: 3704
Location: Slovenia, EU
Expire: 2013-11-18
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| Posted: Fri Jul 29, 2011 10:50 am Post subject: |
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Pancolart wrote:
As suggested i've used it some more. This is all F1.8, the lens aperture has been taken out.
Vignetting caused by a bit too long hood. For 1201px versions and more photos of this day you can check:
https://picasaweb.google.com/pancolart/CANONFD1850mmConvertedEOSWithCenterSwirl?authuser=0&feat=directlink
[img]
https://lh3.googleusercontent.com/-zbNs8WI-EvU/TjKDjNawziI/AAAAAAAADXs/UqR4Qb5JhCQ/s800/32.png[/img]
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nixland
Joined: 30 Jan 2011
Posts: 577
Expire: 2012-07-29
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| Posted: Fri Jul 29, 2011 11:12 am Post subject: |
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nixland wrote:
I think that was very cool. Maybe because I like swirly bokeh.
It's like the clone of Biotar 58/2 after Helios ...  where swirly only shows up when the background has more texture and at closer distance.
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Carl Zeiss Jena: Biotar 58/2 1Q, DDR Pancolar 80/1.8 MC, Biotar 75/1.5, Biotar 10cm/2, DDR Sonnar 135/3.5 MC
Carl Zeiss C/Y: Planar 50/1.4 T*, Planar 85/1.4 T*, Planar 100/2 T*, Sonnar 135/2.8 T*
Leica: Summicron-R 35/2 v1, Summicron-R 50/2, Summilux-R 80/1.4, Summicron-R 90/2
Pentax: A 50/1.2
Minolta: Rokkor MC 58/1.2, Rokkor MC 85/1.7, Rokkor MC 100/2, MD 200/2.8
Olympus: Zuiko MC Auto-W 21/2, Zuiko 50/1.2, Zuiko MC Auto-T 85/2, Zuiko Auto-T 100/2
Nikon: Nikkor 28/2.8 Ais, Nikkor 85/1.8, Nikkor 105/1.8, 300/2.8 ED (Ais)
Canon: FD 50/1.2 L, FD 85/1.2 L
Sony: 135/2.8 STF
Jupiter: 85/2 Alu
Cyclop: 85/1.5
Meyer-Optic: Trioplan 100/2.8, Orestor 100/2.8, Primotar 135/3.5
Samyang: 8/3.5 FE, 14/2.8, 85/1.4, 85/1.4 UMC
FOR SALE
Carl Zeiss Jena Biotar 10cm/2 || Carl Zeiss ZE Distagon 28/2 || Minolta Rokkor MD 35/1.8 || Rokkor-X MC 85/1.7 || Rokkor MD 85/1.7 || Olympus Zuiko MC Auto-W 21/2 || Olympus 100/2 || Nikon Nikkor 35/1.4 || Canon: FD 55/1.2 || Vivitar 90/2.5 Series 1 VMC || Tamron: 90/2.5 SP
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iangreenhalgh1
Joined: 18 Mar 2011
Posts: 15679
Expire: 2014-01-07
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| Posted: Fri Jul 29, 2011 1:11 pm Post subject: |
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iangreenhalgh1 wrote:
It's because of the change in distance between the two groups. I saw a similar thing when I modified a Helios-44 by removing the rear group.
Nice lens, intriguing effect, you'll just have to work around the swirl and learn how to get the best out of it. Looks live you're already getting there, some great shots in that series.
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I don't care who designed it, who made it or what country it comes from - I just enjoy using it! |
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Pancolart
Joined: 04 Feb 2008
Posts: 3704
Location: Slovenia, EU
Expire: 2013-11-18
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| Posted: Sat Jul 30, 2011 8:22 am Post subject: |
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Pancolart wrote:
Thank you both. It's really quite different then Biotar which swirls on edges but you are right about meeting similar conditions to produce swirl.
I will sell the lens and move toward another strange modification. Some ideas already in my mind .
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nixland
Joined: 30 Jan 2011
Posts: 577
Expire: 2012-07-29
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| Posted: Sat Jul 30, 2011 10:20 am Post subject: |
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nixland wrote:
Can you elaborate the process of modifying the lens? I am just curious
It came up in my mind that I could get swirly 50mm lens that sharper and flare free than my Biotar/Helios lens
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Carl Zeiss Jena: Biotar 58/2 1Q, DDR Pancolar 80/1.8 MC, Biotar 75/1.5, Biotar 10cm/2, DDR Sonnar 135/3.5 MC
Carl Zeiss C/Y: Planar 50/1.4 T*, Planar 85/1.4 T*, Planar 100/2 T*, Sonnar 135/2.8 T*
Leica: Summicron-R 35/2 v1, Summicron-R 50/2, Summilux-R 80/1.4, Summicron-R 90/2
Pentax: A 50/1.2
Minolta: Rokkor MC 58/1.2, Rokkor MC 85/1.7, Rokkor MC 100/2, MD 200/2.8
Olympus: Zuiko MC Auto-W 21/2, Zuiko 50/1.2, Zuiko MC Auto-T 85/2, Zuiko Auto-T 100/2
Nikon: Nikkor 28/2.8 Ais, Nikkor 85/1.8, Nikkor 105/1.8, 300/2.8 ED (Ais)
Canon: FD 50/1.2 L, FD 85/1.2 L
Sony: 135/2.8 STF
Jupiter: 85/2 Alu
Cyclop: 85/1.5
Meyer-Optic: Trioplan 100/2.8, Orestor 100/2.8, Primotar 135/3.5
Samyang: 8/3.5 FE, 14/2.8, 85/1.4, 85/1.4 UMC
FOR SALE
Carl Zeiss Jena Biotar 10cm/2 || Carl Zeiss ZE Distagon 28/2 || Minolta Rokkor MD 35/1.8 || Rokkor-X MC 85/1.7 || Rokkor MD 85/1.7 || Olympus Zuiko MC Auto-W 21/2 || Olympus 100/2 || Nikon Nikkor 35/1.4 || Canon: FD 55/1.2 || Vivitar 90/2.5 Series 1 VMC || Tamron: 90/2.5 SP
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