PAR GAMMA?
4 messages in this thread
Hi Guys
I'm dumping some single frames of an animation (752×576, 24 bit
uncompressed TGA's) to tape via a bureau service who is using PAR
(hence the PAR/PAL res).
My question is: I'm not sure how dark and how much the colors
will vary from the PC's monitor to the video back (a TV?)
At the moment I've got the PC hooked up to 3 output devivces. A
SVGA screen, a composite signal to a TV monitor (Panasonic) and
a Sony Trinitron (PVM1440Qm) monitor via a SVHS signal. I'm
using a PC2PAL decoder to accomplish this – works fine. But as
you would expect, tonal differences are quite noticeable – even
with color, contrast etc set to mid (default) settings.
My SVGA screen (a 17" Digital Corp) has a gamma of 1.24
but
My TV and Sony monitor both have a gamma of 1.00
Should I just turn off the SVGA screen and set the lights, colors
etc inside 3DS to suit the video output devices? This means I'll
have to pump heaps of light into the scene….or do I just let the
end user adjust for his/her TV settings?
Any advice would be a great help
ThanX GH
Garry;
I am not that experienced in this, but since no one else has answered, and I
have not been online since the 25th, I will share what I know.
You need to put down a 30 second "Color Bar" image with your output. You don't
need to render 30 seconds, one frame will do copied 900 times.
I am not sure of your service bureau, but where I have had some of my stuff
output to tape, they were able to correct the color to "normal" because of the
color bars. Otherwise, the stuff I output looked washed out.
I believe there is a "color bar 3DS file" generator somewhere in the libraries
uploaded by Don Landis I think.
Hope this helps,
Dennis
ThanX Dennis,
I think I'll output some stills with different gamma's from 1.0 -2.1ish
(uncomp' TGA's) then look at them
on the services system…Thanx for the tip
CU GH
BTW Dennis,
The color bar's I would need would have to be PAL (not NTSC)
ThanX again GH