Workprinter and High-Definition

[ekta-clone]

If what you get is 600 lines, you'll need at least 1,200 pixels which is enough for HD resolution.

600 lines, not line pairs


But ok, if you want it to be line pairs, let's discuss that instead

Supose that you do have 600 line pairs. On horisontal that would be like 1200 video lines, or 1200 lines of pixels.
But 1200 video lines ARE NOT enough to sample 600 line pairs on film. That's what I'm talking about in the first place.

Video lines, or pixel lines or whatever you want to call them are horisontal. The DO NOT represent resolving power of the digital system.

A digital system of 1200 lines can not caputure 600 line pairs of resolving power.
To determine how many lines it can capture, math won't help you, you need to use a target and shoot it. The lines on the target need to be rotated, that's the only way to test the diagonal resolving power of a digital system.
The figure would probably come closer to 200-300 or less line pairs, because of the grid nature of pixels

[ekta-clone]

I can see a lot of people equialize eletronic/digital lines with analog optical lines.

There is a BIG difference.


Here is an example of horisontal lines on both film and digital mediums. They are equally sampled, no problems:

film:

digital sampling with the same number of pixels as lines pairs x2:



But here is where the big difference is:

This is how film samples horisontal lines (real life detail and edges):



And this is how digital of the same "resolving power" (number of line pairs times two) samples those "lines"



Clearly it is not enough to use 2xlinepairs to sample film of n line pairs, nor is it enough to match its resolving power.
Unless you call those things "lines"

Now if you used 4x line pairs as your number of pixels, you would start to distinguish lines, 5x or 6x would give even smoother sampling.

That's why you need HD to sample super8

[tlatosmd]

when i make a comparison i've obviously already converted all numbers to a comparable scale/format. of course i didn't see 600 line *pairs* in a super 8 frame. the fact that you even for a second thought that is extremely telling.

I didn't. I only acknowledged the fact that you need at least 2 pixels per line.

there's no if. when are you gonna get the fact that i'm not you. when i say something it's never a guess, nor misinterpreted hearsay, and certainly never a lie. once you get that into your head perhaps you can start learning a thing or two.

Why do you use that word 'if' as an excuse to be insulted instead of dealing with the fact I presented you with? I was asking you to explain that fact according to your reasoning, maybe point out where I'm going wrong, not saying anything about your intentions or capabilities. So you say there's something wrong with my head while you think I'm trying to insult you with a simple question on physics?

Why don't you just reason in debates but pretty soon go over to insultations and four-letter words instead, everytime, and now even blame others of doing what you do? There is simply no reason in talking that rude and respectlessly to people. In fact, it only undermines your potential status in debates. These are not meant to prove anything about yourself, especially not what naughty words you might know. If you see it as a battle of personalities instead of facts and theories, then truly your only chance is to belittle and slander your oponent which is what you appear to be doing. You seem very insecure to me since you need to act in such a manner to a lot of people. I admit that I've provoked you for being the one most consequently reprimanding you for that, though, and by asking about your reasonings. The latter I do with a lot of people here, and none, I repeat, none reacts in such an aggressive, slandering, and simply unacceptible manner as you do. There are other ways of expressing disagreement, and we use them everyday, including on this forum, while you don't.

Again, you might be right in any debate, but what good is it to behave like that?

haha, that must be your university classes in signal theory speaking...

Nope. About 12 years of digital image and video editing, enhancing, and restoration. That might have been a hobby until about 4 months ago, so I've never had more theoretical education about it than one year of college, but at least today I'm payed for what I do and what I'm able to achieve by my practical work.

the point is that this time roger saw something that tlatosmd likes thus roger's opinion is magically more relevant that other's, and then on another issue roger's opinion suddenly counts for nothing and instead it's npcoombs or whoever that we should listen to.

That insults either Roger or Nathan by saying that one of them can only be right and the other can only be wrong. Is that what you consider polite and civilized? You appear (note this verb, please, 'appear', as I always intend to phrase the difference clearly between directly quoting someone and my interpretation of it) so much enjoying to insult people that, again, you don't seem to know who you're actually talking about.

If what you get is 600 lines, you'll need at least 1,200 pixels which is enough for HD resolution.

600 lines, not line pairs

I was only quoting Mattias on that one, and he said lines, just as he confirmed himself later. Even if my understanding of physical matters might be off here (which possibiltiy I don't question, which is why I often refer to other people even though some appear to feel insulted or provoked by that), there still is no reason to talk as inacceptibly as some people here do.

[Alex_W]

I've got an 8.30 res at Dorsia. Top that!

[Arislan]

I've got an 8.30 res at Dorsia. Top that!

:evil: :evil: :evil: :evil: :evil: :evil:

...excuse me...I need to return...some videotapes....

[scott]

I've got an 8.30 res at Dorsia. Top that!

I'm meeting Cliff Huxtable for lunch at the Four Seasons.

[Evan Kubota]

Is this Dorcia?

- Yes, this is Dorcia...

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