? 4 BillyBoy re: #80 Rosco filter

MrMikeC wrote on 9/15/2004, 1:52 PM
Hey there, you've helped me out a few times in the past, I'm going to be doing the calibration thing as you describe your website, I looked on the web and found this:

http://www.adorama.com/RO80.html

for $5.95 I'm guessing this is what you're talking about? 20" x 24" is just about big enough to fit over the whole screen on my TV - It this the right one?

Thanks,
Mike sdsumike619@hotmail.om (reply to my email addy if you can)

Comments

MrMikeC wrote on 9/15/2004, 1:59 PM
anyone else may answer too that knows =0
John_Cline wrote on 9/15/2004, 3:47 PM
Actually, it only needs to be big enough to hold in front of your eye.

John
epirb wrote on 9/15/2004, 4:25 PM
Or you could order the "contact lenses" ; )
Seriuosly, though I use one that came with a DVD for calibrating home theater systems. The Avia disc has one thats on a section of what looks like 35mm film stock.
dont laugh but i taped it to a pair of clear saftey glasses so I didnt have to hold it.
MrMikeC wrote on 9/21/2004, 7:33 PM
ok, I just got my blue filter in the mail,,,, but when I place it over the TV screen it doesn't look like the image you show on your tutorial and i can't seem to get what you say here:

"the intensity of bar A and block B along with bar C and block D should be the same or as close as you can make it. The smaller image of the SMPTE color bar chart (blue and black only) shows how the bars and blocks appear to merge into one solid area with only a tiny whitish line separating the bar and block"

Can you help me out?
johnmeyer wrote on 9/21/2004, 7:48 PM
Hold it over you eye, not on the TV screen, as others have said.
MrMikeC wrote on 9/21/2004, 8:21 PM
I tried that too, it's not showing just blues like it should be...,,, can't get the outer bars and blocks to look the same as he shows on his tutorial
MrMikeC wrote on 9/22/2004, 10:50 AM
does anyone know billyboy's email address?
craftech wrote on 9/22/2004, 5:37 PM
I think he used a Wratten 47B. The Rosco #80 doesn't exactly look the same.

The main thing is to get the black and the white correct first. That is the most important.
The blue filter thing doesn't work all that well for calibration of the color. Shoot something with a lot of color in it like a box of cereal or something and make sure that it is in normal light and that your camera is properly calibrated. Feed it through the monitor and stand the object next to the moinitor then match the monitor to the object as best you can.

The Ovation DVD entitled "AVIA Guide to Home Theater" has some great stuff on it for calibrating a monitor.

Also just as good is Discwasher "Home Theater Setup Disc".

Careful though! After all that work your properly color corrected videos may look washed out on a customer's TV. "Proper" adjustment is usually always darker than default settings on commercial televisions. You have to also ballpark the settings by testing on several different televisions then kick up the brightness and contrast a notch or two above "correct". Then go back and check the color again.

John