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View Full Version : HD resolution: 1920i or 1920p ?


Rickmeister
10-13-2005, 12:24 PM
To be honest... i tried to search for the answer, but not too long (call me lazy ;) )

Could anyone tell me what the difference is between 1920i and 1920p, whats gives you better quality and why?

ZaKKoS
10-13-2005, 04:31 PM
well... "i" stands for Interlaced and "p" stands for progressive so, beisde the "film look":rolleyes:, with interlaced footage you'll work for interlaced mediums, like tv, and with progressive footage you should be able to work with other progressive footage (film).

Quality is not involved (to certain extents).

BrianHarbauer
10-14-2005, 06:37 AM
Interlaced gives you a smoother picture, however because of the nature of interlaced, your only getting half the resolution. For a picture double in sharpness, go progressive.

Interlaced is alternating fields every other line @60Hz(USA) and 50Hz(Europe).

fwtep
10-14-2005, 05:33 PM
Interlaced gives you a smoother picture,Only on interlaced screens, which are rapidly disappearing-- DLP projection TVs, Plasma, LCD, etc. are all progressive, as are computer monitors.

Fred

BrianHarbauer
10-15-2005, 04:56 AM
Absolutley. :thumbsup:

(I use progressive myself whenever I have the chance.)

siyrobbo
10-15-2005, 10:55 PM
sorry, but do you mean 1080i and 1080p?

BrianHarbauer
10-16-2005, 04:55 AM
It's either one or the other, interlaced or progressive. Interlaced is alternating fields, progressive is full pictures like film frames. So it can't be 1080i and 1080p. It seems we need a visual for people to understand the difference. When i get home i'll post some pics, i'm at work right now.

P.S. Some cameras will allow you to shoot both. (1080i or 720p, etc.)

curious_69_george
10-17-2005, 07:37 PM
The Sony Camera can shoot 1080p, 1080i, as well as 720p. In all the various frame rates, 24fps, 23.976fps, 25pfps, 29.97ifps, 30pfps, as well as 60 fields per second.

The so called "Film Look" has more to do with the frame rate then interlaced or progressive.

Rickmeister
10-18-2005, 06:59 PM
sorry, but do you mean 1080i and 1080p?

damn, why did you have to say that! now i look stupid :( j/k ;)
thats what i meant, sorry for the confusion.

Thanks everybody, it made some things alot clearer for me.
Though some new questions came up...

So that means when your camera is 1080i it has half the resolution than when its 1080p? or how does this work...

...and sony camera's can do both? because on there site it they advertise with 1080i every, also there is nothing about progressive. because i'm planning on buying a Sony HDR-HC1e.

curious_69_george
10-18-2005, 10:04 PM
It would be more correct to say that 1080p has whole frames as opposed to 1080i having interlaced. Because there are two fields per frame.

That Sony camera actually has interlaced CCD's so it can't shoot Progressive. I was referring to the HDW-F900. ($160,000)

That is the only camera that can shoot 1080p.

Rickmeister
10-18-2005, 10:09 PM
It would be more correct to say that 1080p has whole frames as opposed to 1080i having interlaced. Because there are two fields per frame.

That Sony camera actually has interlaced CCD's so it can't shoot Progressive. I was referring to the HDW-F900. ($160,000)

That is the only camera that can shoot 1080p.

thought so ;) just hoping though.

thx again!

Matty2Phatty
10-19-2005, 12:52 AM
I was referring to the HDW-F900. That is the only camera that can shoot 1080p.

The F900 has been superseded by the Genesis ($400,000)

Artifex
10-19-2005, 04:21 AM
Just a little FYI.


What has been said is true but I would like to add that most television (like my HD rear projection TV) can be set to display the images in Progressive scan.

This forces your television to display Interlaced images in a diffenrent way. Normaly an interlaced image is displayed by swaping between lower and upper fields rapidly. If set to progressive, your television will not only swap the interlaced image but also add a top to bottom wipe so it displays more "fields" at a time, giving you a better quality image. The quality of the image is also depending alot on the number of lines or fields your television has. The more fields it has, the more fields you see at a time, so the better the image is.

later, ;)

Motionstream
10-19-2005, 02:52 PM
Interlaced footage needs to be de-interlaced for best results in applying effects and edits. Its generally better to start with progressive sources. If you need interlaced computer generated files (Which won't be required in the near future) you should render at 60FPS and then interlace for best results.

curious_69_george
10-19-2005, 03:45 PM
The F900 has been superseded by the Genesis ($400,000)

I would say though that those are two different animals.
As the Genesis I would not consider a Hi-Def camera. It is in the same league as the Thompson Viper or the Dalsa Origin, which shoot in image sequences and not HD. (or to be more accurate, any ATSC recognized HD format.)

To use that as a Hi-Def camera would be overkill.

Just my 2 cents though

Matty2Phatty
10-20-2005, 07:46 AM
Point taken, but my thoughts were simply that even suggesting an F900 is a little beyond what the guy wanted, though i am just assuming.

And then, quoting a price on an F900 doesn't even begin to cover the actual costs involved. You still need a componant monitor, and lenses. I know a guy who bought a $300,000 lens for his F900. It's enough to make you sick :eek:

(For the record, it was the studio, not him personally that bought the lens)

curious_69_george
10-20-2005, 10:53 PM
Point taken, but my thoughts were simply that even suggesting an F900 is a little beyond what the guy wanted, though i am just assuming.

And then, quoting a price on an F900 doesn't even begin to cover the actual costs involved. You still need a componant monitor, and lenses. I know a guy who bought a $300,000 lens for his F900. It's enough to make you sick :eek:

(For the record, it was the studio, not him personally that bought the lens)

Point taken as well. I was going on the premis that he just wanted information and not a consumer report. And that is the lowest end North American Sony that can shoot 1080p.

Just wanted to keep it basic.

$300,000 seems a little excessive for a lense, but if you have the coin, all the power to yah.

BrianHarbauer
10-22-2005, 06:22 AM
Can the lens make beer or give you a backrub? For $300,000 I would hope it takes noticably nicer pics. I can just imagin going to my supervisor. "Yeah, we need this incredibly expenive lens to replace our other one cause... it takes a better picture..."

I'm in no way making fun of your friend. Maybe he could give us some pointers on how to get our supervisors to shell out the cash.:D

Rickmeister
10-22-2005, 02:45 PM
Can the lens make beer or give you a backrub? For $300,000 I would hope it takes noticably nicer pics. I can just imagin going to my supervisor. "Yeah, we need this incredibly expenive lens to replace our other one cause... it takes a better picture..."

I'm in no way making fun of your friend. Maybe he could give us some pointers on how to get our supervisors to shell out the cash.:D

Good optics are VERY expensive... but not 300.000 ofcourse.

BrianHarbauer
10-24-2005, 06:25 AM
Oh yes i agree, very expensive, i just had to take a crack at it is all. :thumbsup:

Matty2Phatty
10-26-2005, 07:36 PM
I'm in no way making fun of your friend. Maybe he could give us some pointers on how to get our supervisors to shell out the cash.:D

The guy was directing a big budget film for a major hollywood studio. They have a lot of stuff like cameras and lenses already there, though they'd actually bought this one to gain the elusive 'film look' which ofcourse, is not possible, but you can get pretty close. The studios are pushing the use of their F900 cameras for some reason, i guess no productions want to touch it.

As for making fun of him, he's not a friend, just a guy i know, so bag him all you like :thumbsup:

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