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» Film-Tech Forum   » Operations   » Large Format Forum   » AE-1 Sound

   
Author Topic: AE-1 Sound
Annice Simpson
Film Handler

Posts: 1
From: Charlotte, NC
Registered: Sep 2016


 - posted 07-05-2017 07:51 AM      Profile for Annice Simpson   Email Annice Simpson   Send New Private Message       Edit/Delete Post 
we seem to be having an issue with our sound becoming 'grainy' and/or 'skipping/buffering'... this is our 10th ae1 from IMAX and not thrilled at all!

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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12205
From: Annapolis, MD
Registered: Dec 1999


 - posted 07-19-2017 04:36 PM      Profile for Steve Guttag   Email Steve Guttag   Send New Private Message       Edit/Delete Post 
So I'm guessing this isn't the AE-1 sound you are looking for:

https://www.youtube.com/watch?v=FcmaSK7_z5E

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Marcel Birgelen
Film God

Posts: 2610
From: Maastricht, Limburg, Netherlands
Registered: Feb 2012


 - posted 07-27-2017 05:29 AM      Profile for Marcel Birgelen   Email Marcel Birgelen   Send New Private Message       Edit/Delete Post 
Yeah, the AE-1 was a pretty OK camera, but a bit lacking in the sound department. [Wink]

If I'm not mistaken, the AE-1 is the thing which replaced DTAC as the digital playback unit for the IMAX soundtrack.

I guess when the thing is skipping or buffering there is a synchronization problem between the projector and the AE-1. Instead of just replacing the AE-1, did they bother to have a look at the time code reader on the projector side?

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16221
From: Bountiful, Utah
Registered: Jun 99


 - posted 07-27-2017 04:33 PM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
I used to repair them when I worked at Canon factory service in the late 70's-early 80's. Also A-1's and a bunch of optics. Interestingly almost no one at Canon owned Canon cameras. Most owned Nikons, and a few of the guys were true camera collectors that owned everything under the sun. This picture was taken with a Mamiya 645 with 24mm fisheye.

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Frank Angel
Film God

Posts: 5198
From: Brooklyn NY USA
Registered: Dec 1999


 - posted 08-02-2017 10:51 PM      Profile for Frank Angel   Author's Homepage   Email Frank Angel   Send New Private Message       Edit/Delete Post 
Why do they think fish see with barrel distortion? Why is it called a fish-eye lens? Why not a bow-legged lens? Or a bowl-eye lens?

When you think about it, it is fascinating to try to image how fish and some birds actually see with those independent eyes wandering all over the place -- they're are always seeing two images which are not converged. Hard to imagine how they process that in those pea-sized brains -- seems a lot harder than just converging two images into a single 3D image.

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Marcel Birgelen
Film God

Posts: 2610
From: Maastricht, Limburg, Netherlands
Registered: Feb 2012


 - posted 08-04-2017 07:37 AM      Profile for Marcel Birgelen   Email Marcel Birgelen   Send New Private Message       Edit/Delete Post 
Well, what your brain is "seeing", isn't so much just a bunch of "dots" with varying color and intensities, but a constructed image. What's happening in our brains is actually still barely achievable using today's supercomputers.

We know, through the simple application of optical illusions, that what your brain is seeing, isn't the "real world", but an interpreted version. It's actually more like what your brain expects to see, combined with what it actually sees.

Fish and birds will also construct their version of the "real world", based on their sensory inputs, so I doubt that those animals see the world as a constant stream of two individual images.

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16221
From: Bountiful, Utah
Registered: Jun 99


 - posted 08-04-2017 11:10 AM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
quote: Frank Angel
When you think about it, it is fascinating to try to image how fish and some birds actually see with those independent eyes wandering all over the place
I think a lot of people I've seen over the years also seem to have independent movement between their eyes.

Mark

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