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Re: [Openexr-user] Questions for more experienced users
From: |
Kevin Wheatley |
Subject: |
Re: [Openexr-user] Questions for more experienced users |
Date: |
Wed, 21 Feb 2007 10:09:41 +0000 |
User-agent: |
Mozilla Thunderbird 1.0.7-1.1.fc4 (X11/20050929) |
The issues I would see are:
That cameras do not do the best job with demosaic, so storing a RAW
bayer (or whatever) format would make more sense for high end
applications. This is a budget issue.
The best A/D systems in cameras are at most 14bit so you don't need
the dynamic range (currently) from OpenEXR, each additional bit is
going to cost in terms of speed of sensor, heat budget, chip cost etc.
Anything that adds gates to the chips lowers potential yields and
increases costs. In stills they already need JPEG compression and some
RAW formats are actually JPEG style compressed images, so their
existing compression system is used for all formats.
In moving images, I would think that the high end applications that
want HDR, would have the budget for such complex image formats, but
most vendors are actually in the consumer camera business and don't
want to build only for the high end. To resolve this you have to make
the mass market want it.
This suggests that maybe the professional stills cameras might have
special modes as a selling point, and that a few years after that the
consumers might get it. On the movie side of the business you have to
sell it to the producers (does it save them money), directors (what
does it do for them), cinematographers (does it actually give higher
quality end product), etc.
My personal opinion is that currently there is no need for it, but if
the capability existed in the sensors then its better than inventing
yet another format. However you'll find a sudden need to wrap ISO or
other standards around it for it to work across a wide range of
systems and that would probably kill it...
Kevin
--
| Kevin Wheatley, Cinesite (Europe) Ltd | Nobody thinks this |
| Senior Technology | My employer for certain |
| And Network Systems Architect | Not even myself |
- Re: [Openexr-user] Questions for more experienced users, (continued)
- Re: [Openexr-user] Questions for more experienced users, Deke Kincaid, 2007/02/22
- Re: [Openexr-user] Questions for more experienced users, John Coldrick, 2007/02/23
- Re: [Openexr-user] Questions for more experienced users, Deke Kincaid, 2007/02/23
- RE: [Openexr-user] Questions for more experienced users, Chris Cox, 2007/02/23
- RE: [Openexr-user] Questions for more experienced users, Luc-Eric Rousseau, 2007/02/23
- Re: [Openexr-user] Questions for more experienced users, John Coldrick, 2007/02/23
Re: [Openexr-user] Questions for more experienced users, Deanan DaSilva, 2007/02/19