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Pancolart
Joined: 04 Feb 2008
Posts: 3693
Location: Slovenia, EU
Expire: 2013-11-18
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 Posted: Mon Jan 27, 2014 11:08 am Post subject: Meyer Lydith hacked |
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Pancolart wrote:
I wanted to share this with you: one can remove three mount screws and reach infinity blocker screw beneath the mount. If removed (unscrewed) completely you will increase MFD to 15cm without any problem. Stoppage is still normal. It is preset lens so aperture is not connected anyhow. Focusing is still firm and stable. Lens will also pass infinity but only slightly which also comes handy for bad adapters to reach firm infinity wide-open.
Besides i found one can switch Exakta and M42 mounts. Infinity does not have to be adjusted.
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Nordentro
Joined: 24 Jun 2010
Posts: 4713
Location: Lillehammer, Norway
Expire: 2015-01-29
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| Posted: Mon Jan 27, 2014 12:53 pm Post subject: |
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Nordentro wrote:
Nice info, thx! 
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Lars | Manuellfokus.no |
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Arkku
Joined: 28 Feb 2007
Posts: 1416
Location: Helsinki, Finland
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| Posted: Mon Jan 27, 2014 1:14 pm Post subject: |
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Arkku wrote:
Just tried it on the Pentacon-branded M42 version; doesn't work, the front will unscrew from the focusing helicoid, so one would have to be very careful when focusing the lens and avoid going too far. Oh well. |
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Pancolart
Joined: 04 Feb 2008
Posts: 3693
Location: Slovenia, EU
Expire: 2013-11-18
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| Posted: Mon Jan 27, 2014 1:50 pm Post subject: |
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Pancolart wrote:
| Arkku wrote: |
| Just tried it on the Pentacon-branded M42 version; doesn't work, the front will unscrew from the focusing helicoid, so one would have to be very careful when focusing the lens and avoid going too far. Oh well. |
I've tried two Meyer Lydith versions. I don't have Pentacon to try. It might be constructed differently.
This hack will not work in case your two leading pins inside have missing or broken springs not pushing them outward. This is quite possible if your lens had been opened before.
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Arkku
Joined: 28 Feb 2007
Posts: 1416
Location: Helsinki, Finland
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| Posted: Mon Jan 27, 2014 10:36 pm Post subject: |
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Arkku wrote:
| Pancolart wrote: |
This hack will not work in case your two leading pins inside have missing or broken springs not pushing them outward. This is quite possible if your lens had been opened before. |
May be a different build then, I saw no springs or place for springs to go inside. |
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Pancolart
Joined: 04 Feb 2008
Posts: 3693
Location: Slovenia, EU
Expire: 2013-11-18
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| Posted: Tue Jan 28, 2014 11:28 am Post subject: |
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Pancolart wrote:
Quick tutorial not to make enigma out of the simple thing. Here you can see the mount already off.
When infinity blocker screw removed (4) the focusing will continue bellow MFD until the spring pin (1)
reaches end of the hole (3). It cannot jump over unless spring is missing. Natural stop occurs.
You can still see grease on path of original MFD (2). The MFD gain using this procedure is from point (2) to slightly bellow point (3).
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Arkku
Joined: 28 Feb 2007
Posts: 1416
Location: Helsinki, Finland
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| Posted: Tue Jan 28, 2014 2:32 pm Post subject: |
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Arkku wrote:
Yes, it is clear from the image that the Pentacon version I have is differently built. |
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Jesito
Joined: 24 Aug 2007
Posts: 5745
Location: Olivella, Catalonia, (Spain)
Expire: 2015-01-07
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| Posted: Mon May 07, 2018 9:55 am Post subject: |
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Jesito wrote:
| Pancolart wrote: |
Quick tutorial not to make enigma out of the simple thing. Here you can see the mount already off.
When infinity blocker screw removed (4) the focusing will continue bellow MFD until the spring pin (1)
reaches end of the hole (3). It cannot jump over unless spring is missing. Natural stop occurs.
You can still see grease on path of original MFD (2). The MFD gain using this procedure is from point (2) to slightly bellow point (3).
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Hi Jorge,
Would it be possible to repost the picture?.
Probably was lost somewhat in the past...
Thanks!!
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Jesito, Moderator 
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TLR/6x6/645 YashicaMat, Petri 6x45, Nettar, Franka Solida, Brilliant
SLR Minolta X300, Fuji STX II, Praktica VLC3, Pentax P30t, EXA500, EXA 1A, Spotmatic(2), Chinon CM-4S, Ricoh, Contax, Konica TC-X , Minolta 5000, 7000i, 3Sxi, EOS 500 and CX
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Pancolart
Joined: 04 Feb 2008
Posts: 3693
Location: Slovenia, EU
Expire: 2013-11-18
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| Posted: Mon May 07, 2018 11:40 am Post subject: |
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Pancolart wrote:
Sorry Jesito, on my old computer already disconnected. From what i can remember it is not really advanced procedure and if you have some experience opening lenses you can proceed.
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Jesito
Joined: 24 Aug 2007
Posts: 5745
Location: Olivella, Catalonia, (Spain)
Expire: 2015-01-07
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| Posted: Thu May 10, 2018 1:38 pm Post subject: |
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Jesito wrote:
| Pancolart wrote: |
| Sorry Jesito, on my old computer already disconnected. From what i can remember it is not really advanced procedure and if you have some experience opening lenses you can proceed. |
I see, thanks anyway 
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Jesito, Moderator
Jesito's backsack:
Zooms Sigma 70-300, Tamron 35-135 and 70-210 short, 70-210 long, 28-70 CF Macro, 35-70, 35-80, Vivitar 70-210 KA, Tamron 70-250.
Fixed Industar-50, , Tamron 24mm, Tamron 135mm, Sands Hunter 135mm, Pancolar 50mm, Volna-3, many Exakta lenses
DSLR SIGMA SD9 & SD14, EOS 5D, Sony A700 and NEXF3, Oly E-330, E-400, E-450, E-1
TLR/6x6/645 YashicaMat, Petri 6x45, Nettar, Franka Solida, Brilliant
SLR Minolta X300, Fuji STX II, Praktica VLC3, Pentax P30t, EXA500, EXA 1A, Spotmatic(2), Chinon CM-4S, Ricoh, Contax, Konica TC-X , Minolta 5000, 7000i, 3Sxi, EOS 500 and CX
Rangefinders Chinon 35EE, Konica C35 auto, Canonet 28, Yashica Lynx, FED-2, Yashica electro 35, Argus C3 & C4, Regula Cita III, Voigtlander Vitoret (many), Welta Welti-I, Kodak Signette 35, Zorki-4, Bessa-R & L, Minolta Weathermatic, olympus XA2
Compact Film Konica C35V, Voigtlander Vitorets, Canon Prima Super 105, Olympus XA2 and XA3
Compact Digital Olympus C-5050, Aiptek Slim 3000, Canon Powershot A540, Nikon 5200, SIGMA DP1s, Polaroid X530, IXUS55, Kodak 6490, Powershot G9 and G10
CSCCanon EOS-M, Samsung NX100 and NX210, Lumix G5, NEX-F3 |
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