Jump to content


Photo

Adjusting Shutter on Arri SR


  • Please log in to reply
10 replies to this topic

#1 J. Søren Viuf

J. Søren Viuf
  • Basic Members
  • PipPip
  • 35 posts
  • Cinematographer
  • Los Angeles, CA

Posted 02 September 2007 - 12:59 AM

Hi,

I'm using an Arri SRII and, whenever I "cut" the camera, the shutter/mirror stops in a position that "blocks" the reflection. In other words, I have to manually inch the shutter forward about 180 degrees to see through the lens. Any idea how to adjust that? Is it even possible?

J. Soren Viuf
  • 0

#2 Ry Kawanaka

Ry Kawanaka
  • Basic Members
  • PipPip
  • 26 posts
  • Student

Posted 02 September 2007 - 02:25 PM

Hi, I've seen that happened. Just send the camera back to rental house and they should be able to fix it easily. Also there's a chance that the timing is shifted. So check the timing of the camera.

Ry
  • 0

#3 Chris Keth

Chris Keth
  • Sustaining Members
  • 4427 posts
  • 1st Assistant Camera
  • Los Angeles

Posted 02 September 2007 - 02:44 PM

You should definately give that puppy a phase test and probably send it for service. That's not supposed to happen.
  • 0

#4 Jonathan Bowerbank

Jonathan Bowerbank
  • Basic Members
  • PipPipPipPip
  • 2815 posts
  • 1st Assistant Camera
  • San Francisco, CA

Posted 03 September 2007 - 12:12 AM

...I have to manually inch the shutter forward about 180 degrees to see through the lens. Any idea how to adjust that?


By manually, do you mean you're having to remove the lens and inch it with your finger? I would think using the test button would clear it for you.

Never had this issue with an SR before though, only with the S. Hopefully it's just a problem with the camera's stopping :/
  • 0

#5 Jonathan Bowerbank

Jonathan Bowerbank
  • Basic Members
  • PipPipPipPip
  • 2815 posts
  • 1st Assistant Camera
  • San Francisco, CA

Posted 03 September 2007 - 12:34 AM

Oh yeah, you probably meant by turning the shutter key on the side. ;)
  • 0

#6 Jamie Metzger

Jamie Metzger
  • Basic Members
  • PipPipPipPip
  • 773 posts
  • Cinematographer
  • San Francisco

Posted 03 September 2007 - 12:50 AM

That also might mean that something could be seriously wrong with the image that comes out. There is an inching knob above the run switch. You should be able to turn that to see through.
  • 0

#7 J. Søren Viuf

J. Søren Viuf
  • Basic Members
  • PipPip
  • 35 posts
  • Cinematographer
  • Los Angeles, CA

Posted 03 September 2007 - 02:19 AM

Yes, to conclude the suspense that you all were no doutb living through, I did check out the camera in more detail, and I investigated the timing of the shutter in relation to the registration pin/pulldown claw mechanism (using the inching knob to visually examine), and it seemed to be in perfect sync. Needless to say, I was still a bit worried, because it obviously needs perfect precision. Anyways, the tests I ran quelled my fears.


Thank you to all who gave advice!

J Soren Viuf
  • 0

#8 Chris Keth

Chris Keth
  • Sustaining Members
  • 4427 posts
  • 1st Assistant Camera
  • Los Angeles

Posted 03 September 2007 - 05:17 PM

Find a scrap of film and run a proper phase test. Just looking at it leaves much to be desired since just a bit off will ruin the image.
  • 0

#9 Jon Kukla

Jon Kukla
  • Basic Members
  • PipPipPipPip
  • 399 posts
  • Other

Posted 03 September 2007 - 08:55 PM

Doug Hart's book goes over this in detail, but the easiest way to do a phase test is to get some junk film and draw a highly wavy line on about a foot or so. Load the magazine with this and make certain that the line section will be going through the gate. Then, without a lens on, slowly inch the shutter by hand. You shouldn't see any line movement at any point during the shutter being open. Doing extensive tests with POMs and strobes is a surefire way to check for even minor problems, but in the field the wavy line is the best way to discover larger phase problems.
  • 0

#10 Logan Schneider

Logan Schneider
  • Basic Members
  • PipPipPip
  • 133 posts
  • Cinematographer
  • Bozeman, MT

Posted 04 September 2007 - 12:17 AM

I saw this happen last year with a BL4. The AC didn't know what it was and they lost a day and half of footage. Don't play guessing games. Send it back.
  • 0

#11 Chris Keth

Chris Keth
  • Sustaining Members
  • 4427 posts
  • 1st Assistant Camera
  • Los Angeles

Posted 05 September 2007 - 02:09 AM

I saw this happen last year with a BL4. The AC didn't know what it was and they lost a day and half of footage. Don't play guessing games. Send it back.


How dare that AC. Tsk-tsk. <_<
  • 0


Abel Cine

Technodolly

Broadcast Solutions Inc

Paralinx LLC

Visual Products

CineTape

Tai Audio

Ritter Battery

Aerial Filmworks

Glidecam

Rig Wheels Passport

Opal

Willys Widgets

Gamma Ray Digital Inc

CineLab

rebotnix Technologies

Media Blackout - Custom Cables and AKS

FJS International, LLC

Metropolis Post

Wooden Camera

The Slider

Technodolly

Glidecam

Wooden Camera

CineTape

rebotnix Technologies

Gamma Ray Digital Inc

CineLab

Willys Widgets

Visual Products

Broadcast Solutions Inc

Paralinx LLC

Aerial Filmworks

Rig Wheels Passport

Abel Cine

Metropolis Post

Ritter Battery

Tai Audio

FJS International, LLC

Media Blackout - Custom Cables and AKS

Opal

The Slider