Jump to content


Photo

removing Beaulieu "Reglomatic" from Optivaron 6/66.


  • Please log in to reply
31 replies to this topic

#1 Benjamin Coppens

Benjamin Coppens
  • Basic Members
  • PipPip
  • 14 posts
  • Cinematographer
  • Brussels

Posted 29 April 2008 - 04:33 PM

Hello everybody,

I've just purchased a Beaulieu Schneider K. "Optivaron" 6/66 to use on my Fujica ZC1000.
Is it possible to remove the "Reglomatic"(servo-motor) from the lens?
I don't need it and also want to do it for aesthetic reasons!

I didn't received the lens yet so I'm not familiar with it's construction.

Thanks!


Benjamin.
  • 0

#2 Joe Uman

Joe Uman
  • Basic Members
  • PipPip
  • 29 posts
  • Other
  • HIBERNIA

Posted 29 April 2008 - 05:37 PM

Just unscrew it.
  • 0

#3 Benjamin Coppens

Benjamin Coppens
  • Basic Members
  • PipPip
  • 14 posts
  • Cinematographer
  • Brussels

Posted 29 April 2008 - 07:13 PM

Just unscrew it.


Thanks Joe,

Will the Reglomatic reveal a gap in the lens like with removing the Leicinamatic from the Leitz Optivaron?


Cheers!

Benjamin.
  • 0

#4 chuck colburn

chuck colburn
  • Basic Members
  • PipPipPipPip
  • 389 posts
  • Other
  • orygun

Posted 29 April 2008 - 10:25 PM

Thanks Joe,

Will the Reglomatic reveal a gap in the lens like with removing the Leicinamatic from the Leitz Optivaron?


Cheers!

Benjamin.


Yes it will. A little opening where the gear drive meshes and a couple of screw holes. I'm pretty sure the Optivaron was made by Schneider.
  • 0

#5 Joe Uman

Joe Uman
  • Basic Members
  • PipPip
  • 29 posts
  • Other
  • HIBERNIA

Posted 30 April 2008 - 02:45 AM

Thanks Joe,

Will the Reglomatic reveal a gap in the lens like with removing the Leicinamatic from the Leitz Optivaron?


Cheers!

Benjamin.


Yes, it's the same lens.
  • 0

#6 andy oliver

andy oliver
  • Sustaining Members
  • 258 posts
  • Other
  • uk

Posted 30 April 2008 - 06:20 AM

hi optivaron was made by schneider, read somewhere extra elements were added by leitz to perfect the already perfect lens.
As for the 6-66 on your zc1000, although the lens will fit, the images may lack sharpness, especially at the 6mm end of the zoom with an f1.8 iris. The 6-66 was set up for a beaulieu camera, not a fuji, the back focus will be different, my advice is to have the 6-66 lens correctly adjusted to your zc1000, something only a specialist can acheive....
  • 0

#7 Benjamin Coppens

Benjamin Coppens
  • Basic Members
  • PipPip
  • 14 posts
  • Cinematographer
  • Brussels

Posted 30 April 2008 - 06:51 AM

hi optivaron was made by schneider, read somewhere extra elements were added by leitz to perfect the already perfect lens.
As for the 6-66 on your zc1000, although the lens will fit, the images may lack sharpness, especially at the 6mm end of the zoom with an f1.8 iris. The 6-66 was set up for a beaulieu camera, not a fuji, the back focus will be different, my advice is to have the 6-66 lens correctly adjusted to your zc1000, something only a specialist can acheive....



Thanks Andy,

I frequently use my Leitz Optivaron and Cinegon on the Fujica without sharpness problems...I hope it will be the same with the Beaulieu lens!


Regards,
Benjamin.
  • 0

#8 chuck colburn

chuck colburn
  • Basic Members
  • PipPipPipPip
  • 389 posts
  • Other
  • orygun

Posted 30 April 2008 - 09:49 AM

Thanks Andy,

I frequently use my Leitz Optivaron and Cinegon on the Fujica without sharpness problems...I hope it will be the same with the Beaulieu lens!


Regards,
Benjamin.


If the Fuji camera is standard "C" mount (1" by 32 t.p.i. at .690" flange focale depth) then it should work fine. If you are near an optical repair shop or a motion picture equipment rental house, their lens tech can pop it on their autocollimator to confirm front and back focus.
  • 0

#9 Jean-Louis Seguin

Jean-Louis Seguin
  • Basic Members
  • PipPipPipPip
  • 719 posts
  • Other
  • Montreal, Canada

Posted 30 April 2008 - 10:31 AM

Hello everybody,

I've just purchased a Beaulieu Schneider K. "Optivaron" 6/66 to use on my Fujica ZC1000.
Is it possible to remove the "Reglomatic"(servo-motor) from the lens?
I don't need it and also want to do it for aesthetic reasons!

I didn't received the lens yet so I'm not familiar with it's construction.

Thanks!


Benjamin.




Hi Benjamin,

The servo-motor assembly is attached to the lens via 4 screws located at the base of the servo-motor assembly, close to the lens mount. Loosen all the screws and the whole thing will just slide off.

As far as focusing is concerned, the lens will have been collimated to the Beaulieu flange focal depth which is a hair deeper than the true C-mount depth to account for the gelatin filter in the light path. So when you use the lens on your ZC1000, there might be a slight loss of sharpness on the wide end and at fully open aperture. if this is the case, a lens technician could recollimate the lens for you to improve performance.

Cheers,
Jean-Louis
  • 0

#10 chuck colburn

chuck colburn
  • Basic Members
  • PipPipPipPip
  • 389 posts
  • Other
  • orygun

Posted 30 April 2008 - 10:40 AM

Actually behind the lens filter holders (when there is a gel in the holder) increase the flange focale depth "optically" by about 1/3 the thickness of the gelatin filter. This would be appx. .0015". The flange depth of the camera should be adjusted for proper "C" mount depth (.690") with a filter in place. After that a gel should always be used even if it's just a clear one. This is important with those extremly short focale lengths found on super eight zooms. .0015" is a huge back focus error at 6mm.

Edited by chuck colburn, 30 April 2008 - 10:41 AM.

  • 0

#11 kevin jackman

kevin jackman
  • Basic Members
  • PipPipPipPip
  • 350 posts
  • Other

Posted 30 April 2008 - 12:51 PM

like he said, the beaulieu and fujica share the same backfocus distance since they are both c mount. assuming the lens is correctly collimated for c mount you will have no issues.
  • 0

#12 Joe Uman

Joe Uman
  • Basic Members
  • PipPip
  • 29 posts
  • Other
  • HIBERNIA

Posted 30 April 2008 - 03:12 PM

like he said, the beaulieu and fujica share the same backfocus distance since they are both c mount. assuming the lens is correctly collimated for c mount you will have no issues.



In my experience they don't, I have owned a 6008S and 7008PRO (without filters) and the c mount lenses I had collimated to them where not in collimation on my Fujica ZC1000. It just happens to be a quirk of beaulieu cameras that they are not exactly c mount standard. It's less notable on wide angle primes so most people don't always notice the softness as much and don't realise how sharp the image should be.

Edited by Joe Uman, 30 April 2008 - 03:13 PM.

  • 0

#13 andy oliver

andy oliver
  • Sustaining Members
  • 258 posts
  • Other
  • uk

Posted 30 April 2008 - 03:57 PM

In my experience they don't, I have owned a 6008S and 7008PRO (without filters) and the c mount lenses I had collimated to them where not in collimation on my Fujica ZC1000. It just happens to be a quirk of beaulieu cameras that they are not exactly c mount standard. It's less notable on wide angle primes so most people don't always notice the softness as much and don't realise how sharp the image should be.



totally agree, you may get lucky, but i too have always had issues regarding sharp images when using different c-mount lenses on the r16, 4008,6008,7008 cameras, each lens must be adjusted to the camera. My advice, get the 6-66 adjusted to the zc1000, otherwise your not benefitting from the great resolving power of the 6-66 lens. Understand that beaulieu cameras were manufactured, then lenses adjusted to the body, i've never successfully interchanged and obtained perfect back with lenses on a beaulieu, ie, swapping lenses over between bodies. Your leicina may be different, as the the leitz QC would have been a lot higher than beaulieus.
  • 0

#14 Benjamin Coppens

Benjamin Coppens
  • Basic Members
  • PipPip
  • 14 posts
  • Cinematographer
  • Brussels

Posted 01 May 2008 - 05:57 PM

Thanks all for your answers and reactions!

I'll post my experiences with the lens and cam here for those who are interested...I should have it in a couple of days now.
Maybe I'll even let a technician check the Leitz's for perfect use with the Fuji since I'm not using the Leicina that much anymore. (I had multiple problems with steadyness and cassettes on set!? :blink: )

ALSO the Leica-m to C-mount convertor that I'm using on the Fuji is from Beaulieu!
So I guess the convertor was made for using M-lenses on a Beaulieu= not really C-mount. (Alltough I've never noticed sharpness problems with this config...)

Am I wright?

Greets,
Benjamin.
  • 0

#15 chuck colburn

chuck colburn
  • Basic Members
  • PipPipPipPip
  • 389 posts
  • Other
  • orygun

Posted 01 May 2008 - 06:23 PM

Thanks all for your answers and reactions!

I'll post my experiences with the lens and cam here for those who are interested...I should have it in a couple of days now.
Maybe I'll even let a technician check the Leitz's for perfect use with the Fuji since I'm not using the Leicina that much anymore. (I had multiple problems with steadyness and cassettes on set!? :blink: )

ALSO the Leica-m to C-mount convertor that I'm using on the Fuji is from Beaulieu!
So I guess the convertor was made for using M-lenses on a Beaulieu= not really C-mount. (Alltough I've never noticed sharpness problems with this config...)

Am I wright?

Greets,
Benjamin.


Every still camera mount to "C" mount adapter I've seen or checked was assuming a standard .690" "C" mount flange focale depth. I doubt if the Leica to "C" mount adapter is otherwise. Since I would think that the manufacture would want it to work on any "C" mount beit Beaulieu, Eclair, Bell&Howell or whatever.

cheers,

Chuck

Edited by chuck colburn, 01 May 2008 - 06:24 PM.

  • 0

#16 Benjamin Coppens

Benjamin Coppens
  • Basic Members
  • PipPip
  • 14 posts
  • Cinematographer
  • Brussels

Posted 05 May 2008 - 05:44 PM

OK

I tested the Beaulieu on my Fujica and it is indeed not calibrated to "normal" c-mount...
So I'll be using the Leitz 6/66...The only problem is the Leicinamatic (servo-motor) who is just in front of the ON button of the Fuji...The use of a cable release is impossible because of that. :(
I've read that removing the Leicinamatic is very tricky and not a good idea.


Cheers
  • 0

#17 Joe Uman

Joe Uman
  • Basic Members
  • PipPip
  • 29 posts
  • Other
  • HIBERNIA

Posted 06 May 2008 - 03:21 AM

OK

I tested the Beaulieu on my Fujica and it is indeed not calibrated to "normal" c-mount...
So I'll be using the Leitz 6/66...The only problem is the Leicinamatic (servo-motor) who is just in front of the ON button of the Fuji...The use of a cable release is impossible because of that. :(
I've read that removing the Leicinamatic is very tricky and not a good idea.


Cheers



The servo-motors should be removed with no problems, it won't effect the mount.
  • 0

#18 andy oliver

andy oliver
  • Sustaining Members
  • 258 posts
  • Other
  • uk

Posted 06 May 2008 - 03:53 PM

Hi, why not have your newly aquired lens adjusted to the correct back focus. Bjorn in Sweden maybe able to help.
  • 0

#19 Benjamin Coppens

Benjamin Coppens
  • Basic Members
  • PipPip
  • 14 posts
  • Cinematographer
  • Brussels

Posted 16 May 2008 - 05:27 PM

hello,

Too much trouble in comparison with using my already usable Leitz 6/66.
I just have to remove the Leicinamatic now, another problem...


Thanks all for your interest.
  • 0

#20 Dan Hudgins

Dan Hudgins
  • Basic Members
  • PipPip
  • 32 posts
  • Other
  • San Francisco, CA USA

Posted 25 August 2011 - 09:57 AM

I'm thinking of using a Schneider Optivaron 6-66mm f/1.8 on a KineRAW-S8 ™ 2.5K Digital Cinema Camera from http://www.kinefinity.com , it has a C mount with adjustable back focus, so the results should be sharp, but this is the "macro zoom" model Optivaron, so there is a lever that extends through the motor part that has a small plastic button cap on it.

Is it possable to remove the motor part on the macro zoom Optivaron 6/66 and still have the macro zoom part lock in place?

The Angenieux f/1.2 6-80mm also has "macro" but not with as close focus, but it lacks that macro lever in the back so its motor part somes off easier, so that might be another option.

Also I was wondering if the back focus on the Fujica f/1.8 5.5mm for the ZC1000 is the same as the Schneider Optivaron, or if I would need two of the quick change mount rings for the KineRAW-S8 in order to adjust the back-focus (flange to focal distance) for each lens to optimize the sharpness?

BTW, does anyone know how the sharpness of the Fujica f/1.8 7.5-75mm for the ZC1000 compaires to the Schneider Optivaron 6-66mm f/1.8, they have the same f/ stop, but the Fujica is electron beam coated, so is its T/ stop faster or something?
  • 0


rebotnix Technologies

Wooden Camera

CineLab

Opal

Broadcast Solutions Inc

Glidecam

Technodolly

The Slider

Paralinx LLC

Willys Widgets

Abel Cine

Media Blackout - Custom Cables and AKS

Ritter Battery

Visual Products

Tai Audio

Aerial Filmworks

CineTape

Rig Wheels Passport

FJS International, LLC

Metropolis Post

Gamma Ray Digital Inc

Paralinx LLC

rebotnix Technologies

The Slider

CineTape

Metropolis Post

Rig Wheels Passport

Opal

Ritter Battery

Gamma Ray Digital Inc

Media Blackout - Custom Cables and AKS

CineLab

Visual Products

Glidecam

Abel Cine

Broadcast Solutions Inc

Willys Widgets

Tai Audio

Aerial Filmworks

FJS International, LLC

Wooden Camera

Technodolly