View Full Version : is Avia calibration disc sold in stores????


bucka bucka
09-29-09, 04:26 PM
i was lookin around in Best Buy and couldnt find it. Did i look in wrong sections? where is it sold?

Jim McC
09-29-09, 05:18 PM
I've never seen it in any stores. Online only.

chexi1
09-29-09, 05:25 PM
Watch out for Avia standard def. My understanding is that it's greyscale IRE windows are off. If there is a hi def version, it might be fine. If you know what you are doing, get the AVSHDCD disc for free. It likely has all you need and more. I have Avia, DVE, and the AVS disc and have found the AVS disc the most user friendly, especially if you are doing a DIY primaries adjustment and grey scale.

bucka bucka
09-29-09, 06:51 PM
If you know what you are doing, get the AVSHDCD disc for free. It likely has all you need and more.

free? where do i get that?

chexi1
09-30-09, 10:23 AM
I had the name wrong. It is AVS HD 709.

http://www.avsforum.com/avs-vb/showthread.php?t=948496

Doug Blackburn
09-30-09, 01:41 PM
The grayscale targets on the AVIA discs are not "off" but many people, perhaps most people won't get what they think they are getting.

AVIA discs use IRE windows while most other discs use % white windows. IRE set the standards for converting analog voltages to luminance levels many decades ago - but that is valid only for analog TV and analog video displays. IRE has no place in the age of digital video displays. The problem with TRUE IRE patterns is that 7.5 IRE is what we refer to as 0% white in digital video (when we are dealing with consumer video that puts black at digital 16 rather than digital 0). So AVIA's IRE 10 pattern is really only about 2.5% white. The error decreases as the patterns get whiter. AVIA's approach was fine in the days when many DVD players had a setup menu option that set the IRE level so IRE 0 on the AVIA disc would be 0% white on your display. But early DVD players lacked that control and it was dropped in many later (and current) DVD players and it's not in many Blu-ray players either so you can never get the AVIA patterns to be exactly what you want unless you have one of the disc players that has the selectable IRE level control.

That said... the other problem we have with IRE is that some discs (not AVIA) refer to IRE 0, IRE 10, etc. but they are NOT IRE patterns, they are % white patterns and they should NOT be using the IRE terminology, it just muddies the water further. For digital video, there should never be anything other than % white patterns and nobody should be using IRE any longer (correctly or incorrectly). But we are stuck with a lot of confusion.

The best HD calibration disc is Digital Video Essentials HD DVD version - but you have to have one of the good HD DVD players that doesn't whack color. The Blu-ray version lacks color patterns, but does have grayscale patterns - though it is annoying to use on a slow Blu-ray player.... PS3s and many newer (fast) Blu-ray models navigate the DVE Blu-ray disc acceptably well.

ChrisWiggles
09-30-09, 06:37 PM
Watch out for Avia standard def. My understanding is that it's greyscale IRE windows are off. If there is a hi def version, it might be fine. If you know what you are doing, get the AVSHDCD disc for free. It likely has all you need and more. I have Avia, DVE, and the AVS disc and have found the AVS disc the most user friendly, especially if you are doing a DIY primaries adjustment and grey scale.

The grayscale issue in the original Avia is minor, and can be avoided by turning the color saturation down all the way while adjusting greyscale. Many instruments are unlikely to be able to measure the slight coloration anyway.

That being said, Avia is quite old, AviaII is what is likely available now, I don't know if you can even get the original Avia anywhere anymore. I am not aware of any greyscale issues with Avia II.

And as Doug mentioned, the labeling on the Avia discs (all of them use the same labeling system) is unfortunate and confusing. Another reason the IRE unit should just go away.

ChrisWiggles
09-30-09, 06:39 PM
i was lookin around in Best Buy and couldnt find it. Did i look in wrong sections? where is it sold?

Specialty DVD stores, home theater stores and the like may have it. Or online.

bucka bucka
10-02-09, 11:15 PM
hey appreciate the free download, now 2 quick questions:

1. will this do me any good on a standard tv? im not hdtv yet so i was wondering if itll translate ok on my screen

2. what the hell am i supposed to do on some of these????? theres no on screen instructions telling me what to look for or what to adjust. HELP!!!

if it matter, standard tv using a PS3

alluringreality
10-03-09, 09:06 AM
1. will this do me any good on a standard tv? im not hdtv yet so i was wondering if itll translate ok on my screen

The patterns for brightness and contrast from the previous link are generally intended for digital displays. Most standard definition TVs would be a tube or CRT, so in that case I'd recommend using either Digital Video Essentials or Avia.

theres no on screen instructions telling me what to look for or what to adjust.

There are PDFs that go with the downloads.