A friend told me that my old CRT SELECO 400HT watch 576 pixels in format 4:3
but in 2,35:1 watch fewer pixels, that is correct? If yes how measure this lost?
How many pixels see in 2,35:1?

Ahh dont you love these threads!
Ok firstly, no pixels on a CRT projector...
Secondly if you mean resolution, then the verticle resolution does not change...the width however does change with the aspect ratio.

So... 4:3 @ 576 = 768 so .. 768 x 576
In 2.35:1 @ 576 = 1360 so .. 1360 x 576
In 1.85:1 (16:9) @ 576 = 1065 so .. 1065 x 576

This is my understanding, but anyone feel to correct..that way i learn too!

Shoujiki:

the width does not change with AR!

digital PAL signals on DVD are encoded as 720x576 no matter what the aspect ratio of the active contents is. It also does not matter whether the encode is anamorphic or not.

PAL = 720x576
NTSC = 720x480

Kai

Here is a review, it scans to 100hz so it should do 720p

http://www.homecinemachoice.com/reviews/hccreviews/CRTProjectors/Seleco/SelecoSVP-400HT.php

but here on curts site it says 480p only

http://www.curtpalme.com/PJSpecs_Seleco.shtm


EDIT: Just saw that it will not do 720p but 576p it should do.
Athanasios

Shoujiki:

the width does not change with AR!

digital PAL signals on DVD are encoded as 720x576 no matter what the aspect ratio of the active contents is. It also does not matter whether the encode is anamorphic or not.

PAL = 720x576
NTSC = 720x480

Kai

Ok thanks for clearing that up! So if the resolution is fixed then when something is a different AR, is it stretching the image out?

Ok thank you all, for your answer my frends!!!

Ok thanks for clearing that up! So if the resolution is fixed then when something is a different AR, is it stretching the image out? aspect ratio is set at the source to match the screen. For a 16:9 screen you set the DVD player to 16:9 output. It has very little to do with resolution. On a CRT, as the image size gets shorter the vertical resolution should be reduced. example for 720P
4:3 screen = 1280 x 720
16:9 screen = 1280 x 600
Obviously, you need a scaler to do something like 1280 x 600 so if you don't have one then it's better to run 1080i on a 1272Q with 16:9 screen.

Ok. My brain has always had trouble getting around this... for the sake of discussion in this thread let me make an example so you can see where i get my ideas from.

For this example, lets take an LCD screen. Simple pixel structure.

At the source, lets feed it a 4:3 AR movie, such as Monsters Inc! The LCD screen is 4:3 19" lets say for example sake.
The movie will fill screen.
Take another film that is widescreen. Now in my mind when the film is on the screen, the actual source resoultion has to be 'widescreen too' so something like 1280x720...whearas the 4x3 source resolution is 1280x1024. The only other way i can comprehend having that source on the screen with the same resoultion but being widescreen is to squash it, or make it wider. I can't get around how somewhere along the line, the resolution can't change with 2 distinctly different picture sizes/shapes.

Anyone help? :P