logo Sign In

Ep. III DVD - Purple vertical line?

Author
Date
Author
Time
Post link
Hi:

I have the Episode III PAL original DVD, and there's something annoying about it: there's a vertical line in the left side of the image during the entire film.
Sometimes it's harder to see, but it's there.
In Mustafar it's more clear and the line is purple.

Example1
Detail1

I've resized the image to see it more clear.
I've checked this in my brother's disc and the line is there too.

Is this normal??
Author
Time
Post link
I don't really see what you mean by a purple line, but if it's on your disc and your brothers, than it is "normal" to the shot and you don't have defective discs.
Author
Time
Post link
Is this only visible on your computer? if so it could either be the disks themselves or perhaps your graphics hardware/software. Have you tried a different computer?
Author
Time
Post link
I know, I know! Lucas purposefully did it on the first printed DVDs, so that everyone would buy a second one!
Author
Time
Post link
I see those on alot of retail DVDs. They always occur in the overscan areas so you can't see them on regular TVs. Why they are there is personally beyond me though.
Author
Time
Post link
Call me blind but....I can't see anything purple in either of those pics. I'm very serious moreso because you can see it so clearly....I think I may have a problem.

Hey look, a bear!

Author
Time
Post link
I see what you mean, now.

It could be purple fringing which is an issue with many consumer digital cameras, whether this is an issue with the high-end DV cameras used on EPIII I am unsure of.

It's cause is debatable, but the general consensus is that purple fringing occurs when the lens is wide open in a high-contrast environment. the highlights become overexposed and specular reflections tend to 'max out.'

In theory, the smaller the aperature, the less purple fringing should occur. Maybe this is why EPII is lit so damned brightly for the most part. Think Jedi temple scenes and all of the daylight backgrounds. The more light, the smaller the aperature, less purple fringing.

Less light (EPIII), bigger aperature, more purple fringing.

This, of course, is just me talking out of my ass here, as I don't know if purple fringing is an issue with the Sony HDCF950 used to shoot EPIII.
Author
Time
Post link
What you say about purple fringing makes sense. Thanks for the explanation!

Just one question: can you see the line in your computer with your disc?

If yes, couldn't they correct it? Isn't the disc "THX certified"?
Author
Time
Post link
Originally posted by: TheCassidy
I see what you mean, now.

It could be purple fringing which is an issue with many consumer digital cameras, whether this is an issue with the high-end DV cameras used on EPIII I am unsure of.

It's cause is debatable, but the general consensus is that purple fringing occurs when the lens is wide open in a high-contrast environment. the highlights become overexposed and specular reflections tend to 'max out.'

In theory, the smaller the aperature, the less purple fringing should occur. Maybe this is why EPII is lit so damned brightly for the most part. Think Jedi temple scenes and all of the daylight backgrounds. The more light, the smaller the aperature, less purple fringing.

Less light (EPIII), bigger aperature, more purple fringing.

This, of course, is just me talking out of my ass here, as I don't know if purple fringing is an issue with the Sony HDCF950 used to shoot EPIII.


I don't agree with this theory, because those shots showed in the example are mainly composite shots, made up of several elements, most of those merely CGI, so never actually filmed with a phisical camera. So that purple line should have been invisible or partially covered at least. Also, I belive such glitches would be noticeable on post-production.

My theory is that it's a glitch caused by the computer when showing up DVDs.

EDIT: fixed some typos.
“Voice or no voice, the people can always be brought to the bidding of the leaders. That is easy. All you have to do is tell them they are being attacked and denounce the pacifists for lack of patriotism and exposing the country to danger. It works the same in any country.” — Nazi Reich Marshal Hermann Goering
Author
Time
Post link
Originally posted by: iarwain
What you say about purple fringing makes sense. Thanks for the explanation!

Just one question: can you see the line in your computer with your disc?

If yes, couldn't they correct it? Isn't the disc "THX certified"?


I'm sure they could. They probably would say it was a "creative decision" if it really was a mistake, in order to cover their ass, just like they did for Luke having a green lightsaber in the ANH DVD.
Author
Time
Post link
yeah,I can see that example way better. They paid $150,000 for each one of those cameras..if that is happening because of the camera then some company needs too re-evaluate how much their selling that for. OF course like some other guy said, most of those shot don't have an actual camera involved so.....

I'd say its a PAL DVD problem but unless you always watch it on PC then it shouldn't even show up. Still a quality control issue but a minor one hat most people will never see.

Hey look, a bear!

Author
Time
Post link
I was just throwing the theory out, trying to get a debate so iarwain's problem could be solved.

I agree that the for the price they paid for the cameras there shouldn't be a problem - purple fringing could be coming from the lense used, though.

As for the composite argument - agreed, but I would ask if all of the elements in the shot examples were CGI, or if some of it was either the Mt. Etna footage or miniature, which they used throughout the Mustafar sequence.

I'm thinking monitor calibration could be the culprit now, however.
Author
Time
Post link
I can't see anything. But if it really bothers you, throw it in the trash where it belongs.

War does not make one great.

Author
Time
Post link
Because he bought it in the first place, I have a feeling he doesn't hate it that bad. If he does, then take MeBeJedi's advice, and put it on the shelf, so that it will serve its purpose.
Author
Time
Post link
It's on two DVD's if you read his first post, which means 1 of 3 things:

1) It occurs with all 'Sith' DVD's.
2) 2 out of a shitload of DVD's have the problem (unlikely)
3) This guys setup is out of whack.
Author
Time
Post link
Originally posted by: TheCassidy
It's on two DVD's if you read his first post, which means 1 of 3 things:

1) It occurs with all 'Sith' DVD's.
2) 2 out of a shitload of DVD's have the problem (unlikely)
3) This guys setup is out of whack.


OK, I've some made more tests:

Computer 1:

Laptop (so LCD screen), ATI card, WinXP.
Software: PowerDVD, vlc.

Computer 2:

Desktop, CRT screen, NVIDIA card, Gentoo GNU/Linux.
Software: xine, mplayer, vlc.

In all the cases I can see the line.
Author
Time
Post link
Put it in an actual DVD player, that line is definitely in the overscan reigon and wasn't really meant to be seen.

I used to be very active on this forum. I’m not really anymore. Sometimes, people still want to get in touch with me about something, and that is great! If that describes you, please email me at [my username]ATgmailDOTcom.

Hi everybody. You’re all awesome. Keep up the good work.

Author
Time
Post link
Originally posted by: ReverendBeastly
Put it in an actual DVD player, that line is definitely in the overscan reigon and wasn't really meant to be seen.

)
Right, I can't see the line in my TV (it's an old CRT).
Sorry for my ignorance, but do this apply to a LCD projector too?
Author
Time
Post link
An LCD projector does not show overscan areas that wouldn't be seen on a TV. At least, this is my experience, it might vary by projector.

I used to be very active on this forum. I’m not really anymore. Sometimes, people still want to get in touch with me about something, and that is great! If that describes you, please email me at [my username]ATgmailDOTcom.

Hi everybody. You’re all awesome. Keep up the good work.

Author
Time
Post link
Either way, it's barely noticable unless you're looking for it. Unlesss you're scanning your DVDs for errors, it probably wouldn't detract from you enjoyment.

I'll have to check my own DVDs to see if I have this problem. It's possible it's just a PAL thing.

4

Author
Time
Post link
Originally posted by: TheCassidy
It's on two DVD's if you read his first post, which means 1 of 3 things:

1) It occurs with all 'Sith' DVD's.
2) 2 out of a shitload of DVD's have the problem (unlikely)
3) This guys setup is out of whack.


I'd say 1)......at least PAL dvd's because i checked mine on a computer and messed around with my moniter in every way i could to get the line and couldn't. (yeah so I have WAAAYY to much time......I hat not having school now.)

But hell, wh oknows....maybe just that manufacturing plant wherever it was made had some problem or....something...idk.

Hey look, a bear!

Author
Time
Post link
This kind of thing is common with DVDs. Happens all the time. Some weirdness around the edges, in the overscan region. Oh well. Who cares.
Author
Time
Post link
I've just checked the NTSC R1 version and there's no purple line. So it's only in the PAL version.