View Full Version : DVE, Avia, ISF, AVS...Calibration Disks?


watsonte
12-30-07, 08:35 PM
I have seen posts regarding all these various calibration disks, but, nothing really seems to set one apart from the other.

I recently purchased a Sony 50A3000 and was interested in purchasing one of these disks, but, I wasn't really certain as to which one to purchase. AVS is free which is a plus, DVE has a HD DVD version, just read a little bit about ISF?

So I guess as anyone brand better than the other? Is anyone specific DVD easier to use, or does anyone disk provide better results over another?

Michael TLV
12-30-07, 08:41 PM
Greetings

If you want HD ... then DVE HD is your only choice. Everything else is SD. AVIA will have an HD version in the spring ... not now.

DVE HD is a combo disc ...

So you either spend the same for an SD only product or an HD/SD product.

Regards

watsonte
12-30-07, 08:50 PM
Greetings

If you want HD ... then DVE HD is your only choice. Everything else is SD. AVIA will have an HD version in the spring ... not now.

DVE HD is a combo disc ...

So you either spend the same for an SD only product or an HD/SD product.

Regards

Fair enough, so is it fair to assume that using an HD calibration dvd (DVE) would provided better results than a dvd that is meant for SD?

HappyFunBoater
12-30-07, 09:15 PM
Fair enough, so is it fair to assume that using an HD calibration dvd (DVE) would provided better results than a dvd that is meant for SD?

As far as calibration of the brightness, contrast, color, tint, and RGB gains and cuts, the SD version should be identical. The HD version would be good for setting sharpness, but I'm not sure what else it's good for.

hwjohn
12-30-07, 09:25 PM
As far as calibration of the brightness, contrast, color, tint, and RGB gains and cuts, the SD version should be identical. The HD version would be good for setting sharpness, but I'm not sure what else it's good for.

That isn't necessarily true. The color can be off if the wrong decoding matrix gets used somewhere. You have a much better chance of getting the right colors if you use an HD disc, simply because you have less chance of something going wrong from SD to HD.

hwjohn
12-30-07, 09:29 PM
Greetings

If you want HD ... then DVE HD is your only choice. Everything else is SD. AVIA will have an HD version in the spring ... not now.

DVE HD is a combo disc ...

So you either spend the same for an SD only product or an HD/SD product.

Regards

AVS HD is available in both HD DVD and AVCHD (for Blu-ray), so you do have another (free) choice.

However, AVS HD is geared toward users that don't need much in the way of tutorials. I will always recommend DVE and Avia for their tutorials, it contains a lot of good info. AVS HD also does not have any audio test patterns, and right now does not have a sharpness/overscan/centering pattern. The next Beta which should be released soon will contain such a pattern (I actually think it is a really good one, good job by alluringreality).

Michael TLV
12-30-07, 09:48 PM
Greetings

Done enough sets to know that SD settings don't always apply to HD images. In fact ... they rarely work at all.

Close maybe ... but why live with close when you can have it right ...

Regards

HappyFunBoater
12-30-07, 11:00 PM
That isn't necessarily true. The color can be off if the wrong decoding matrix gets used somewhere. You have a much better chance of getting the right colors if you use an HD disc, simply because you have less chance of something going wrong from SD to HD.

I agree that you need both if there's a bug in the hardware, but that is rarely the case.

HappyFunBoater
12-30-07, 11:02 PM
Greetings

Done enough sets to know that SD settings don't always apply to HD images. In fact ... they rarely work at all.

Close maybe ... but why live with close when you can have it right ...

Regards

If the hardware decodes the color correctly, SD and HD should result in exactly the same color. They're stored in different formats, but they are decoded to result in the exact same color. It should be rare when they don't decode to the same color. Am I wrong about some technical aspect of this?

Michael TLV
12-30-07, 11:07 PM
Greetings

Works in theory ... tell that to the 2000+ tv sets I've worked on.

Regards

watsonte
12-31-07, 08:23 AM
Well from the looks of I might want to stick with the DVE HD version then, Im not very familiar with calibrating displays, I normally adjust the picture some but never really took the time to really calibrate it.

This is my second HD set and I would like to see if these calibration dvds really make a difference.

Thanks for all the replies and information.

Joelc
12-31-07, 11:18 AM
If the hardware decodes the color correctly, SD and HD should result in exactly the same color. They're stored in different formats, but they are decoded to result in the exact same color. It should be rare when they don't decode to the same color. Am I wrong about some technical aspect of this?

This question is being hashed out inanother thread and has come down to this...does the twist from REC 601 decode/encode to REC 709 decode/encode preserve:

1. The original sources RGB values (in which case you would be correct); or

2. The original sources color/rendering intent.

And since -- at least to date -- those of us participating in the thread have found no reference as to (i) what is being done or, more importantly, (ii) what should be done the jury is out.

And, my best guess, is that hardware is out there that does both...

HTH

lcaillo
01-01-08, 10:53 AM
Greetings

Works in theory ... tell that to the 2000+ tv sets I've worked on.

Regards

Ditto that experience...

Electric AL
01-08-08, 09:00 PM
so basically if you want to tweak the HD quality, get the HD version? probably a stupid question but is it on an HD disc?

Michael TLV
01-08-08, 09:21 PM
Greetings

DVE is on an HD DVD combo ...

There are two AVS HD discs on this site ... both free for download. Both formats.

Scattered instructions...

Regards

garnido
01-31-08, 02:53 PM
I do not have an HD DVD player, but primarily watch HD TV stations. If I run the SD cali disk, am I just spinning my wheels in the sand, as it's only calibrating SD?

Also, what about upconverting? When I buy an HD DVD in the future, can I use a SD cali disk through the upconvert feature and will it work properly?

joemama127
02-02-08, 04:05 PM
Greetings

Done enough sets to know that SD settings don't always apply to HD images. In fact ... they rarely work at all.

Close maybe ... but why live with close when you can have it right ...

RegardsGood to know as I have the Avia II blu-ray on pre-order and skipped getting the sd dvd.

burg54
02-05-08, 01:35 AM
I do not have an HD DVD player, but primarily watch HD TV stations. If I run the SD cali disk, am I just spinning my wheels in the sand, as it's only calibrating SD?

Also, what about upconverting? When I buy an HD DVD in the future, can I use a SD cali disk through the upconvert feature and will it work properly?




Took the words right out of my mouth!!! Bump in the hopes that someone will answer this clearly as I have read thru alot of these threads and havnt seen a really clear answer to this question. I would think ALOT of people are in this situation...watch SD/HD and do not have a new HD/Blue ray DVD yet. Anyways..Thanks for your time.