Some enlarger filter threads have been added, from various sources.
I am sceptical that there is a 34.5 as well as a 35.5 thread.
Many common lenses are still missing.
If you can correct or add info, please do.
Doing so by PM to me or admin would keep the forum thread length down.
FAQ: Screw Threads we use
Moderators: rjlittlefield, ChrisR, Chris S., Pau
According the brochure about Schneider enlarging lens found here:
http://www.schneiderkreuznach.com/pdf/f ... rung_e.pdf
I believe that it's possible to update / correct the table "Screw Threads we use" with the following data:
M25mm x 0.5mm ................ Some lens of Schneider COMPONON, COMPONON-S Series (also available with LTM mount)
M32.5mm x 0.5mm ............. Schneider 100mm f/5.6 enlarger lens mount (also available with LTM mount), some lens of Schneider MAKRO-SYMMAR HM Serie
M39.0mm x 0.75mm ........... Schneider MAKRO-SYMMAR HM 180mm f/5.6
M50.0mm x 0.75mm ........... Schneider 135mm f/5.6 enlarger lens mount and other Schneider enlarging lens
Carlos Magno
http://www.schneiderkreuznach.com/pdf/f ... rung_e.pdf
I believe that it's possible to update / correct the table "Screw Threads we use" with the following data:
M25mm x 0.5mm ................ Some lens of Schneider COMPONON, COMPONON-S Series (also available with LTM mount)
M32.5mm x 0.5mm ............. Schneider 100mm f/5.6 enlarger lens mount (also available with LTM mount), some lens of Schneider MAKRO-SYMMAR HM Serie
M39.0mm x 0.75mm ........... Schneider MAKRO-SYMMAR HM 180mm f/5.6
M50.0mm x 0.75mm ........... Schneider 135mm f/5.6 enlarger lens mount and other Schneider enlarging lens
Carlos Magno
I found this topic only today, as I was searching for the compatibility of CFI Nikon and old NEO Olympus. Thanks for informations
but :
And my question: CFI Nikon and old NEO Olympus are M25 but if Nikon is 25 x0,75mm, how much was the old NEO?
In other words, has somebody tried to fix CFI Nikon lens in an Olympus NEO nosepiece?
but :
It is not always true. I try one lens in 2 rings without succes now.Adaptors don't seem too critical, for example a Mitutoyo screws into a C mount quite happily
Thats 26 x 0.706 into 25.4 x 0.794
And my question: CFI Nikon and old NEO Olympus are M25 but if Nikon is 25 x0,75mm, how much was the old NEO?
In other words, has somebody tried to fix CFI Nikon lens in an Olympus NEO nosepiece?
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These took me awhile to get a hold of so I hope this will save someone time in the future.
All specs came from a copy of a brochure.
Enlarging lens mounting thread
M39 x 1.0 ................................{EDIT CR these are NOT added to the main list as the assumed enlarger lens mount is 39mm x 26tpi.]
Computar DL 30mm f/2.8
Computar DL 50mm f/2.8
Computar DL 55mm f/1.9
Computar Varifocal 50-90
Computar Varifocal 105-150
Computar DL 135mm f/5.6
Computar DL 65mm f/3.5
Computar DL 80mm f/4.5
Computar DL 90mm f/4.5
Computar DL 105mm f/4.5
Enlarging lens filter threads ........................................................{EDIT CR these are added to the main list]
M43 x 0.75 Computar DL 50mm f/2.8
M43 x 0.75 Computar DL 55mm f/1.9
M43 x 0.75 Computar Varifocal 50-90
M43 x 0.75 Computar DL 135mm f/5.6
M43 x 0.75 Computar DL 65mm f/3.5
M43 x 0.75 Computar DL 80mm f/4.5
M43 x 0.75 Computar DL 90mm f/4.5
M43 x 0.75 Computar DL 105mm f/4.5
M52 x 0.75 Computar DL 30mm f/2.8
M67 x 0.75 Computar Varifocal 105-150
All specs came from a copy of a brochure.
Enlarging lens mounting thread
M39 x 1.0 ................................{EDIT CR these are NOT added to the main list as the assumed enlarger lens mount is 39mm x 26tpi.]
Computar DL 30mm f/2.8
Computar DL 50mm f/2.8
Computar DL 55mm f/1.9
Computar Varifocal 50-90
Computar Varifocal 105-150
Computar DL 135mm f/5.6
Computar DL 65mm f/3.5
Computar DL 80mm f/4.5
Computar DL 90mm f/4.5
Computar DL 105mm f/4.5
Enlarging lens filter threads ........................................................{EDIT CR these are added to the main list]
M43 x 0.75 Computar DL 50mm f/2.8
M43 x 0.75 Computar DL 55mm f/1.9
M43 x 0.75 Computar Varifocal 50-90
M43 x 0.75 Computar DL 135mm f/5.6
M43 x 0.75 Computar DL 65mm f/3.5
M43 x 0.75 Computar DL 80mm f/4.5
M43 x 0.75 Computar DL 90mm f/4.5
M43 x 0.75 Computar DL 105mm f/4.5
M52 x 0.75 Computar DL 30mm f/2.8
M67 x 0.75 Computar Varifocal 105-150
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Re: FAQ: Screw Threads we use
Just a quick addition, Olympus neo splan/dplan infinity metallurgical objectives have the same m26 thread as a mitutoyo. Similar styling too, which makes me wonder if they were an inspiration for everyone's favorite lwd objectives.
(A bit of a necropost but this is an evergreen thread)
(A bit of a necropost but this is an evergreen thread)
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Re: FAQ: Screw Threads we use
Not to muddy the waters, but I just got a Nikon finite m26 threaded bd nosepiece and my mitutoyos thread onto it smoothly and without issue.
Re: FAQ: Screw Threads we use
Some do, some don't! Some "One Inch" ones are sloppy enough, too.
Chris R
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Re: FAQ: Screw Threads we use
To be more specific it's a Nikon universal rotating nosepiece with epi DIC prisms for a finite optiphot. A bit confusing since it feels unlikely that it would be a matter of them being loosey goosey with their own spec--this would have likely been one of the first implementations of it, I think. Maybe it comes down to how deep/steep the teeth are.