Jump to content


Photo

Bolex Reflex


  • Please log in to reply
13 replies to this topic

#1 Bartlomiej Sienkiewicz

Bartlomiej Sienkiewicz
  • Basic Members
  • PipPip
  • 11 posts
  • Cinematographer

Posted 14 May 2009 - 10:52 AM

hello.
I am are shooting a short documentary on bolex reflex. I have never used this camera and would like to know how to do a time lapse on it. I heard you can do single frame exposure "T" but I read somewhere that the shutter speed changes from 1/50 to 1/30 (is this the same as shutter angle in 25fps modes)causing overexposure if not compensated.
the other thing is:
has the camera got 1.33:1 gate or 1.85:1 the final product is to be in 1.85:1 s16mm)
And how would I go about it when I want to do telecine to HD.
As I said I have never shot on bolex before (having only used aaton xtr/arri sr3) and wonder about workflow.

thank you very much for your help

Bart
(www.bsienkiewicz.com)
  • 0

#2 Tom Jensen

Tom Jensen
  • Basic Members
  • PipPipPipPip
  • 1234 posts
  • Camera Operator
  • Dallas, TX

Posted 14 May 2009 - 12:02 PM

You'll need an intervalometor and a capping shutter. I found this web site that might be of interest. Scroll down and go to "Do it Yourself" and then click on the Bolex Super 16 conversion.
  • 0

#3 Chris Millar

Chris Millar
  • Basic Members
  • PipPipPipPip
  • 1642 posts
  • Other

Posted 15 May 2009 - 08:11 AM

Likely it will have a 1.33 gate - maybe it is super 16 .. in which case it isn't 1.85 it's 1.66 - and we cant tell you ... just look at the gate and see :blink: :ph34r:

T exposure is for as long as you hold it open - you are referring to 'I' mode ... Cant remember how long it is open for, shutter angles (as in the traditional way to think about them) aren't a consideration as the shutter movement is intermittent when using single frame mode

oops, time for tea!
  • 0

#4 Tom Hepburn

Tom Hepburn
  • Basic Members
  • PipPipPipPip
  • 341 posts
  • Other
  • Chicago-land

Posted 15 May 2009 - 08:19 AM

You'll need an intervalometor and a capping shutter. I found this web site that might be of interest. Scroll down and go to "Do it Yourself" and then click on the Bolex Super 16 conversion.



Hey Tom,

Did you mean to include a link? I'm all about do it yourself.

Thanks,
Tom
  • 0

#5 Chris Millar

Chris Millar
  • Basic Members
  • PipPipPipPip
  • 1642 posts
  • Other

Posted 15 May 2009 - 08:47 AM

http://www.sci.fi/~animato/
  • 0

#6 Tom Jensen

Tom Jensen
  • Basic Members
  • PipPipPipPip
  • 1234 posts
  • Camera Operator
  • Dallas, TX

Posted 15 May 2009 - 09:54 AM

Hey Tom,

Did you mean to include a link? I'm all about do it yourself.

Thanks,
Tom


Tom, I mean to do a lot of things throughout the day. :blink: But, yes, yes I did. Chris did it for me so now I don't have to. Thanks Chris. Tom, nice work, by the way. I checked out your site.

Edited by Tom Jensen, 15 May 2009 - 09:56 AM.

  • 0

#7 Fred Neilsen

Fred Neilsen
  • Basic Members
  • PipPip
  • 82 posts
  • Other
  • Sydney, Australia

Posted 15 May 2009 - 03:58 PM

make sure you close the view finder, there's a small lever on the side, this is to avoid light leeks on the film (a mistake I have made numerous times) You will also need an intervolometer, if it's a short shoot (less than one day), you can get away with something like this:

http://www.youtube.c...re=channel_page

http://www.intervalo...eflow/index.php

However on longer shoots, there is a risk that the spring will get overwound, so a motor drive timelapse is probably the best option

http://www.intervalo...bolex/index.php
  • 0

#8 Tom Hepburn

Tom Hepburn
  • Basic Members
  • PipPipPipPip
  • 341 posts
  • Other
  • Chicago-land

Posted 15 May 2009 - 04:11 PM

Tom, nice work, by the way. I checked out your site.


Thanks a lot Tom. I appreciate it.

Tom H
  • 0

#9 Topher Ryan

Topher Ryan
  • Basic Members
  • PipPip
  • 73 posts
  • Other

Posted 15 May 2009 - 04:51 PM

Do you really need a capping shutter on a Bolex?
  • 0

#10 Tom Jensen

Tom Jensen
  • Basic Members
  • PipPipPipPip
  • 1234 posts
  • Camera Operator
  • Dallas, TX

Posted 15 May 2009 - 05:41 PM

Do you really need a capping shutter on a Bolex?


Maybe. It's up to you.
  • 0

#11 Topher Ryan

Topher Ryan
  • Basic Members
  • PipPip
  • 73 posts
  • Other

Posted 15 May 2009 - 06:19 PM

I was under the impression that the built-in shutter on the bolex Rex models would accomplish the same thing. Would an external capping shutter just be added security on long exposures, or is there another benefit to using one?

Have you experienced light leaks while using just the built-in shutter?

To the original poster:

The Tobin TTL is another intervalometer option. Not sure if they are still in production, though I believe Duall has some for sale.

Here is a direct link to the PDF with some shutter speed info:

http://www.tobincine...lic_PDF/TTL.pdf
  • 0

#12 Tom Jensen

Tom Jensen
  • Basic Members
  • PipPipPipPip
  • 1234 posts
  • Camera Operator
  • Dallas, TX

Posted 15 May 2009 - 11:36 PM

I was under the impression that the built-in shutter on the bolex Rex models would accomplish the same thing. Would an external capping shutter just be added security on long exposures, or is there another benefit to using one?

Have you experienced light leaks while using just the built-in shutter?

To the original poster:

The Tobin TTL is another intervalometer option. Not sure if they are still in production, though I believe Duall has some for sale.

Here is a direct link to the PDF with some shutter speed info:

http://www.tobincine...lic_PDF/TTL.pdf


I've only used the Tobin without a capping shutter on interiors and I have used the Norris Intervalometer on exteriors with a capping shutter and have not had a problem with either. The capping shutter may well be added protection. But, it's better safe than sorry.
  • 0

#13 David Auner aac

David Auner aac
  • Sustaining Members
  • 1117 posts
  • Cinematographer
  • Los Angeles

Posted 16 May 2009 - 01:47 AM

There's always the other option. Get up at 4:45 a.m., haul your Bolex and tripod to the spot. Then wind the beast, make sure you're in I mode (I only noticed after quarter of an hour!). And then press the cable release every 15 seconds for over two hours! :D Worked like a charm. Without a capping shutter or an intervalometer. But I guess the next time I'll use a Tobin too!

Cheers, Dave

PS: I hope you can see the result of that adventure soon! Need to cut it...
  • 0

#14 Tom Jensen

Tom Jensen
  • Basic Members
  • PipPipPipPip
  • 1234 posts
  • Camera Operator
  • Dallas, TX

Posted 16 May 2009 - 10:20 AM

There's always the other option. Get up at 4:45 a.m., haul your Bolex and tripod to the spot. Then wind the beast, make sure you're in I mode (I only noticed after quarter of an hour!). And then press the cable release every 15 seconds for over two hours! :D Worked like a charm. Without a capping shutter or an intervalometer. But I guess the next time I'll use a Tobin too!

Cheers, Dave

PS: I hope you can see the result of that adventure soon! Need to cut it...


Dave went on to be the Austrian thumb wrestling champion later that day. That was an ambitious effort. Did you change exposure at all or was it pretty even?
  • 0


Broadcast Solutions Inc

Rig Wheels Passport

CineLab

Gamma Ray Digital Inc

Media Blackout - Custom Cables and AKS

Visual Products

rebotnix Technologies

Tai Audio

Ritter Battery

Glidecam

Wooden Camera

Metropolis Post

Aerial Filmworks

Paralinx LLC

Abel Cine

CineTape

The Slider

Willys Widgets

Technodolly

Opal

FJS International, LLC

Glidecam

Rig Wheels Passport

Tai Audio

CineLab

Paralinx LLC

FJS International, LLC

Media Blackout - Custom Cables and AKS

Metropolis Post

rebotnix Technologies

Visual Products

Willys Widgets

Wooden Camera

The Slider

Abel Cine

Aerial Filmworks

Technodolly

Gamma Ray Digital Inc

Ritter Battery

Broadcast Solutions Inc

CineTape

Opal