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techuser
Joined: 07 Sep 2011
Posts: 4
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 Posted: Wed Sep 07, 2011 2:20 am Post subject: Canon FD 300 2.8 Fluorite - Focus stuck |
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techuser wrote:
I got this lens about two months ago, with the mount converted to EOS
it was working fine but now suddenly the focus got stuck from minimal to 70m and I cant get to infinity, the focus ring doens't move beyond 70m if I pull it with more strenght, and I dont hear anything loose inside the lens that could be blocking the barrel from moving... Also it did not fall, just stopped working from one day to another
Any help with this?
It seems there's a version of this lens with internal focusing, mine is the one which the lens extends when close focusing.
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my_photography
Joined: 03 Nov 2008
Posts: 2772
Location: Pearl of the Orient
Expire: 2016-12-25
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| Posted: Wed Sep 07, 2011 2:40 am Post subject: Re: Canon FD 300 2.8 Fluorite - Focus stuck |
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my_photography wrote:
| techuser wrote: |
I got this lens about two months ago, with the mount converted to EOS
it was working fine but now suddenly the focus got stuck from minimal to 70m and I cant get to infinity, the focus ring doens't move beyond 70m if I pull it with more strenght, and I dont hear anything loose inside the lens that could be blocking the barrel from moving... Also it did not fall, just stopped working from one day to another
Any help with this?
It seems there's a version of this lens with internal focusing, mine is the one which the lens extends when close focusing.
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Welcome, techuser. Let me help you to post your image.
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Zeiss: CJZ Flektogon 20/2.8, CJZ Flektogon 20/4, , CJZ Pentacon 29/2.8, CJZ Flektogon 35/2.4, CJZ Pancolar 50/1.8, Tessar 50/2.8, Biotar 7.5cm/1.5, CJZ Pancolar 80/1.8, CJZ Sonnar 135/3.5, CJZ Pentacon 135/2.8 CJZ Sonnar 200/2.8
Other Germany: Meyer Primoplan 50/1.8, Meyer Trioplan 100/2.8
Takumar: SMC 50/1.4 Super Tak 55/2, Super Tak 85/1.9, S-M-C 135/3.5, Super Tak 150/4
Russian: Zenith 16/2.8, Mir-24M 2/35, Volna-9 50/2.8, Helios 44M (58/2), Helios 44M-3 MC (58/2), Helios 40 (85/1.5), Tair 11A (135/2.8 )
Others: Sears 28/2.8, Sankor 35/2.8, Enna M�nchen Tele-Ennalyt 135/3.5
Zoom Sigma Zoom 28-85/3.5-4.5
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ZoneV
Joined: 09 Nov 2009
Posts: 1633
Location: Germany
Expire: 2011-12-02
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| Posted: Wed Sep 07, 2011 6:33 am Post subject: |
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ZoneV wrote:
The newer new FD version 300/2.8L has a kind of focus limit ring - never used it.
But I suposse the older version did not have this?
That could be a problem based in the conversion :-/
Probably something hard fell into the focusing helicoid or IF mechanics and blocks it?
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Camera modification, repair and DIY - some links to look through: http://www.4photos.de/camera-diy/index-en.html
I AM A LENS NERD!
Epis, Elmaron, Emerald, Ernostar, Helioplan and Heidosmat.
Epiotar, Kameraobjektiv, Anastigmat, Epis, Meganast, Magnagon, Quinar, Culmigon, Novotrinast, Novflexar, Colorplan, Sekor, Kinon, Talon, Telemegor, Xenon, Xenar, Ultra, Ultra Star. Tessar, Janar, Visionar, Kiptar, Kipronar and Rotelar.
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techuser
Joined: 07 Sep 2011
Posts: 4
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| Posted: Wed Sep 07, 2011 5:17 pm Post subject: |
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techuser wrote:
No switch
I thought of something blocking it but cant hear anything loose inside, also since to infinity the lens retracts the barrel I can see the path it needs to make when looking behind it, and at least from the mount side its clear, it just stops moving... |
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ZoneV
Joined: 09 Nov 2009
Posts: 1633
Location: Germany
Expire: 2011-12-02
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| Posted: Thu Sep 08, 2011 9:21 am Post subject: |
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ZoneV wrote:
| techuser wrote: |
| ..I thought of something blocking it but cant hear anything loose inside... |
When a part is inside the helicoid or such with grease would not make noise, I think.
_________________
Camera modification, repair and DIY - some links to look through: http://www.4photos.de/camera-diy/index-en.html
I AM A LENS NERD!
Epis, Elmaron, Emerald, Ernostar, Helioplan and Heidosmat.
Epiotar, Kameraobjektiv, Anastigmat, Epis, Meganast, Magnagon, Quinar, Culmigon, Novotrinast, Novflexar, Colorplan, Sekor, Kinon, Talon, Telemegor, Xenon, Xenar, Ultra, Ultra Star. Tessar, Janar, Visionar, Kiptar, Kipronar and Rotelar.
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