[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: New Sony 24sF format
- To: multiple recipients of <telecine at alegria.com>
- Subject: Re: New Sony 24sF format
- From: "Rich Torpey" <rich at image-group.com>
- Date: Tue, 6 Apr 1999 15:33:50 -0400
- In-Reply-To: "John Sprung" <John_Sprung at paramount.com> "Re: [TIG] New Sony 24sF format" (Apr 6, 3:02pm)
- References: <8825674B.0068D1F9.00 at gump.paramount.com>
- Resent-Date: Tue, 6 Apr 1999 14:51:08 -0500
- Resent-From: telecine at alegria.com
- Resent-Message-ID: <"HDH7WC.A.3KB.nWmC3" at sun>
- Resent-Sender: telecine-request at alegria.com
- Resent-To: multiple recipients of <telecine at alegria.com>
On Apr 6, 3:02pm, John Sprung wrote:
> Right, in current practice, vertical resolution is limited in
> the sampling process, be it telecine or a video camera. When
> progressive working becomes the common practice, it will have
> to be broken out into the tape to tape downconversion to
> interlace. That'll be chips manipulating bits in RAM.
>
>
>
John,
I feel it necessary to distinguish between vertical sampling in
telecine and in video cameras. Telecines are inherently progressive scan
devices which then convert to interlace on output. That is why I take issue
with the Sony position that 48sf is absolutely different from 48i - it depends
entirely on the capture mechanism. A telecine running at the native frame rate
for that video standard ( 29.97/NTSC or 25/PAL) will produce a signal
equivalent to that which Sony describes as "segmented frame".
--
Rich Torpey
LBTL
---
quick NAB telecine product focus at
http://www.alegria.com/tig3/TIGNABFS99.txt
Thanks to Rich Lyons of Preferred Video Products for support in 1999
No advertising/marketing allowed on the main TIG. Contact rob at alegria.com
anonymous messaging now at http://www.alegria.com/HyperNews/get/ubique.html
1021 subscribers in 41 countries on Tue Apr 6 14:51:03 CDT 1999
subscribe/unsubscribe with that Subject: to telecine-request at alegria.com
complete information on the TIG website http://www.alegria.com/tig3/