Jump to content


Photo

switar primes


  • Please log in to reply
7 replies to this topic

#1 marc barbé

marc barbé
  • Basic Members
  • PipPip
  • 82 posts
  • Director

Posted 13 August 2007 - 04:09 AM

Hi,
Does anyone know the front thread size of small C-mount switar primes (31, 8mm, 32mm?)?
Thank you,
Marc.
  • 0

#2 Nick Mulder

Nick Mulder
  • Basic Members
  • PipPipPipPip
  • 1023 posts
  • Other
  • Auckland, New Zealand

Posted 13 August 2007 - 04:48 AM

I dont remember the exact size but it is metric and it was a very annoying 0.5 size for both the 10mm and 26mm presets (I know the standard 10mm is smaller, not sure about the 25mm, 75mm preset at least is certainly larger) -

I tried to get step up rings so I could use my much larger Mamiya 72mm filters but would have needed two and it was going to be expensive and possibly vignette anyhow ... I am still either using gel filters or have this kind of rubber band contraption to hold on resin or glass filters to the front - ugly, but optically fine
  • 0

#3 Mike Rizos

Mike Rizos
  • Basic Members
  • PipPipPipPip
  • 330 posts
  • Other

Posted 13 August 2007 - 09:52 PM

According to my notes the 10, 16, 25, and 26 are all 32mm. When found with filters it's usually with the series 5.5(35.9mm) adapter. The 50 is 42mm and the 75 is 41mm.
  • 0

#4 Nick Mulder

Nick Mulder
  • Basic Members
  • PipPipPipPip
  • 1023 posts
  • Other
  • Auckland, New Zealand

Posted 13 August 2007 - 10:29 PM

According to my notes the 10, 16, 25, and 26 are all 32mm. When found with filters it's usually with the series 5.5(35.9mm) adapter. The 50 is 42mm and the 75 is 41mm.


My measurements at the time never eventuated into something I could check, so assuming you have tried a 32mm filter on these lenses then I'm sure you are correct - although, I still note that the earlier 10mm switar (pre-preset) does have a smaller thread then the rest ...

I have a coupe of UV 5.5 filters in both my 10mm and 26mm - nice system, aside from the fact you can only have the one filter in there :rolleyes: Still looking for a nice series7 for my 75mm though
  • 0

#5 marc barbé

marc barbé
  • Basic Members
  • PipPip
  • 82 posts
  • Director

Posted 14 August 2007 - 06:58 AM

My measurements at the time never eventuated into something I could check, so assuming you have tried a 32mm filter on these lenses then I'm sure you are correct - although, I still note that the earlier 10mm switar (pre-preset) does have a smaller thread then the rest ...

I have a coupe of UV 5.5 filters in both my 10mm and 26mm - nice system, aside from the fact you can only have the one filter in there :rolleyes: Still looking for a nice series7 for my 75mm though



Thank you all for the precious answers. I also intend to step up to series 7 with the switars, since my main series is Cooke kinetals. I've found just about all the adapters I've ever needed on e-bay for a few bucks, except a 65mm step-up ring for Angénieux zoom.
Best regards,
Marc.
  • 0

#6 Charles MacDonald

Charles MacDonald
  • Sustaining Members
  • 1157 posts
  • Other
  • Stittsville Ontario Canada

Posted 14 August 2007 - 08:02 PM

I have a coupe of UV 5.5 filters --- nice system, aside from the fact you can only have the one filter in there

the half filter sizes, 4.5 and 5.5 are a bit rare. Still I am sure at one time you could get a filter ring which would allow stacking more than one filter. since they are the size of the lens, you might get cutoff.

you micht find a ring to allow a series 6 filter on a series 5.5 lens, then you could stack more than one series 6 filter. too bad the series filters more or less died out in the 1960s
  • 0

#7 Nick Mulder

Nick Mulder
  • Basic Members
  • PipPipPipPip
  • 1023 posts
  • Other
  • Auckland, New Zealand

Posted 14 August 2007 - 09:11 PM

60's - yep ! I love the designs of the boxes my eBay series filters turn up in - very retro ...

these should be interesting:

http://cgi.ebay.com/...I...N:IT&ih=017

just won the auction - very good deal if they are scratch free and otherwise clean - especially the ND's - I'm interested to find out how the polarizer will be able to rotate ... And what effect the centre spot will give apart from some form of 'light reducing crapperizer' - I'm assuming the Agfa one is a diffusion filter maybe ?
  • 0

#8 marc barbé

marc barbé
  • Basic Members
  • PipPip
  • 82 posts
  • Director

Posted 15 August 2007 - 06:43 AM

the half filter sizes, 4.5 and 5.5 are a bit rare. Still I am sure at one time you could get a filter ring which would allow stacking more than one filter. since they are the size of the lens, you might get cutoff.

you micht find a ring to allow a series 6 filter on a series 5.5 lens, then you could stack more than one series 6 filter. too bad the series filters more or less died out in the 1960s


I actually go with series 7 rings (6 to 7 adapters are easy to find) since I have a complete set of Tiffen filters for the Cookes (the series 7 adapters also take 48mm filters, and 49mm if you just file down the filter threads). I guess I'll just have to wait for a 32mm to 6 adapter to pop up on e-bay...
Regards,
Marc.
  • 0


Wooden Camera

Visual Products

Willys Widgets

Technodolly

Tai Audio

Glidecam

Broadcast Solutions Inc

FJS International, LLC

CineLab

Rig Wheels Passport

The Slider

Gamma Ray Digital Inc

CineTape

Metropolis Post

Opal

Abel Cine

Paralinx LLC

Aerial Filmworks

Ritter Battery

rebotnix Technologies

Media Blackout - Custom Cables and AKS

Paralinx LLC

Aerial Filmworks

Tai Audio

Broadcast Solutions Inc

rebotnix Technologies

The Slider

CineLab

Metropolis Post

CineTape

Willys Widgets

Wooden Camera

Technodolly

Opal

Gamma Ray Digital Inc

Abel Cine

Rig Wheels Passport

Media Blackout - Custom Cables and AKS

FJS International, LLC

Ritter Battery

Glidecam

Visual Products