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Movies Forum Index » Movie Technology Forum » Filming with 16 mm a computer screen
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| Sébastien Marouani |
 Posted: Tue Jan 13, 2004 8:16 am |
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Guest
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Hello,
I'll have for the short movie of a friend to help him with computer (where
I'm good at...) to film in 16mm 25 fps 1 man behind a computer screen.
I know that in video (in france) we are working with 25fps 50 hz and that
when we are filming a computer screen there is some strange things if the
computer screen is not in 50 or 100 hz. Is it the same with 16mm ? Do I have
to prepare for is short movie a computer screen @ a 100Hz and that is all ?
Is it the same probleme with TFT computer screen ?
Thank you for your help !
Regards,
SebM |
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| John Anastasio |
| Posted: Tue Jan 13, 2004 10:54 am |
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If you're using a cathode ray tube display, it needs to be set at the frame
rate or a multiple of the frame rate. LCD screens and TFT screens do not
have the same problem, since they aren't "scanned" the way a CRT is. Flat
screen displays are on all the time and only the necessary pixels are
changed, so you shouldn't have any strobing problems with them.
"Sébastien Marouani" <seb@spamcop.net> wrote in message
news:4003c55e$0$6982$7a628cd7@news.club-internet.fr...
Quote: Hello,
I'll have for the short movie of a friend to help him with computer (where
I'm good at...) to film in 16mm 25 fps 1 man behind a computer screen.
I know that in video (in france) we are working with 25fps 50 hz and that
when we are filming a computer screen there is some strange things if the
computer screen is not in 50 or 100 hz. Is it the same with 16mm ? Do I
have
to prepare for is short movie a computer screen @ a 100Hz and that is all
?
Is it the same probleme with TFT computer screen ?
Thank you for your help !
Regards,
SebM
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| Scott Dorsey |
| Posted: Tue Jan 13, 2004 3:09 pm |
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Sébastien Marouani <seb@spamcop.net> wrote:
Quote:
I'll have for the short movie of a friend to help him with computer (where
I'm good at...) to film in 16mm 25 fps 1 man behind a computer screen.
I know that in video (in france) we are working with 25fps 50 hz and that
when we are filming a computer screen there is some strange things if the
computer screen is not in 50 or 100 hz. Is it the same with 16mm ? Do I have
to prepare for is short movie a computer screen @ a 100Hz and that is all ?
Is it the same probleme with TFT computer screen ?
No. Just use an LCD monitor and you won't have any of the flicker issues.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis." |
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| Clive Mitchell |
| Posted: Tue Jan 13, 2004 4:54 pm |
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In message <4003c55e$0$6982$7a628cd7@news.club-internet.fr>, Sébastien
Marouani <seb@spamcop.net> writes
Quote: I know that in video (in france) we are working with 25fps 50 hz and that
when we are filming a computer screen there is some strange things if the
computer screen is not in 50 or 100 hz. Is it the same with 16mm ? Do I have
to prepare for is short movie a computer screen @ a 100Hz and that is all ?
Is it the same probleme with TFT computer screen ?
Go with the TFT if you can. They aren't raster scan, and therefore
don't flicker.
--
Clive Mitchell
http://www.bigclive.com |
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| Sébastien Marouani |
| Posted: Tue Jan 13, 2004 7:59 pm |
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"John Anastasio" <jerz@earthlink.net> a écrit dans le message de
news:dURMb.5569$q4.939@newsread3.news.atl.earthlink.net...
Quote: If you're using a cathode ray tube display, it needs to be set at the
frame
rate or a multiple of the frame rate. LCD screens and TFT screens do not
have the same problem, since they aren't "scanned" the way a CRT is. Flat
screen displays are on all the time and only the necessary pixels are
changed, so you shouldn't have any strobing problems with them.
Thanks this is great !!
SebM |
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| Clive Tobin |
| Posted: Tue Jan 13, 2004 10:32 pm |
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"Sébastien Marouani" <seb@spamcop.net> wrote
Quote: I'll have ... to film in 16mm 1 man behind a computer screen.
Computer CRT monitors can be nearly any screwy frame rate according to the
whim of the video card designer. Typically around 70 or 72 fields or frames
per second. So you can usually film around 35-36 or 17.5-18.
What we suggest (since we make them) is to film with one of our Milliframe
Controllers, which enables you to dial in an odd filming rate in .001 FPS
increments, with a compatible camera. These can be seen at
http://www.tobincinemasystems.com/page11.html .
Cheers, Clive Tobin
www.tobincinemasystems.com |
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