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-   -   Venetian blinding (http://www.homecinemabanter.com/showthread.php?t=71778)

Grimly Curmudgeon[_2_] May 6th 12 02:16 PM

Venetian blinding
 
The post on Laura Tobin's dress sparked this thought...

Is VB still a problem in the days of fully electronic cameras and
displays? I can't say I've noticed it for ages, but do occasionally
see some irritating moire effects from houndstooth or tweed jackets in
studios, whereas studio personnel used to be clued up about such
things.

Roderick Stewart[_2_] May 6th 12 02:52 PM

Venetian blinding
 
In article , Grimly
Curmudgeon wrote:
Is VB still a problem in the days of fully electronic cameras and
displays? I can't say I've noticed it for ages, but do occasionally
see some irritating moire effects from houndstooth or tweed jackets in
studios, whereas studio personnel used to be clued up about such
things.


VB?

Rod.
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Brian Gaff May 6th 12 03:36 PM

Venetian blinding
 
and while we are asking, in the analogue cochannels, if two or more
transmitters cme in together you would often get line pairing effects, where
ppeople complained of the number of lines in their picture had gone down..
Of course we know it was just how the interfering signals mixed, but it did
make we wonder what might happen to digiital signals under a similar
situation.
Brian

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Note:- In order to reduce spam, any email without 'Brian Gaff'
in the display name may be lost.
Blind user, so no pictures please!
"Grimly Curmudgeon" wrote in message
...
The post on Laura Tobin's dress sparked this thought...

Is VB still a problem in the days of fully electronic cameras and
displays? I can't say I've noticed it for ages, but do occasionally
see some irritating moire effects from houndstooth or tweed jackets in
studios, whereas studio personnel used to be clued up about such
things.




Andy Champ[_2_] May 6th 12 09:34 PM

Venetian blinding
 
On 06/05/2012 13:52, Roderick Stewart wrote:
VB?

Rod.


No, I've no idea what it is. fx raises eyes to topic header

Andy

Chris Youlden[_2_] May 6th 12 11:13 PM

Venetian blinding
 
On 06/05/2012 13:16, Grimly Curmudgeon wrote:
The post on Laura Tobin's dress sparked this thought...

Is VB still a problem in the days of fully electronic cameras and
displays? I can't say I've noticed it for ages, but do occasionally
see some irritating moire effects from houndstooth or tweed jackets in
studios, whereas studio personnel used to be clued up about such
things.


Do you mean venetian blinds or hanover bars?

http://en.wikipedia.org/wiki/File:Ha..._PAL_delay.png

--

Chris

Mark Carver May 6th 12 11:18 PM

Venetian blinding
 
On 06/05/2012 14:36, Brian Gaff wrote:
and while we are asking, in the analogue cochannels, if two or more
transmitters cme in together you would often get line pairing effects, where
ppeople complained of the number of lines in their picture had gone down..
Of course we know it was just how the interfering signals mixed, but it did
make we wonder what might happen to digiital signals under a similar
situation.


It's like any other interfering signal in digital systems, up to a
threshold, no noticeable effect on reception, then break up, and if the
interfering level increases, no recoverable signal.

What were you expecting to happen ?

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Mark
Please replace invalid and invalid with gmx and net to reply.

www.paras.org.uk

Adrian C May 7th 12 11:30 AM

Venetian blinding
 
On 06/05/2012 13:16, Grimly Curmudgeon wrote:
The post on Laura Tobin's dress sparked this thought...

Is VB still a problem in the days of fully electronic cameras and
displays? I can't say I've noticed it for ages, but do occasionally
see some irritating moire effects from houndstooth or tweed jackets in
studios, whereas studio personnel used to be clued up about such
things.


Think you mean Moiré patterning?
http://en.wikipedia.org/wiki/Moir%C3%A9_pattern

--
Adrian C




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