[brodi]

I am quite a newbie. I am confused about exactly how CRT's

handle anamorphic(2.35:1) movies off a DVD or HDTV signal.


For instance is there a setting or switch on the projector that you can specify "OK This movie is in 2.35:1 so blow up or expant the image to fill the full height of the screen.

So another words if my Tv 1.33 image is 4' high my 2.35 movie is also now 4 feet high but the width will now be almost 9'.


Obviously I would need a 4' x 9' screen and when watching TV

1.33:1 I would need to mask the right and left side of the screen which is not being used.


I ask this because I thought I remember seeing anamorphic settings on some CRt Projectors. Is this option really available? If not with 2.35 is that what happens when you

switch settings between TV and 16:9?


I'm asking this because I need to know if I need horizontal masking when switching between viewing Tv , 16:9 and anamorphic or 2.35:1 movies.


Thanks

 

[pkarmouche]

Quote:

Originally posted by brodi how CRT's handle anamorphic(2.35:1)

Note that "anamorphic" DVD's could be 1.77:1, 1.85:1, 2.35:1 or anything widescreen for that matter. 2.35:1 is the aspect ratio... "anamorphic" defines how it is encoded on the DVD.


"Anamorphic" DVD's will require a different setup than "Non-anamorphic" DVD's.


Do a forum search for "Anamorphic".

Quote:

For instance is there a setting or switch on the projector ...

Depends on your projector. Some have separate memory locations to store different aspect ratios.

Quote:

I'm asking this because I need to know if I need horizontal masking when switching between viewing Tv , 16:9 and anamorphic or 2.35:1 movies.

If your room is light controlled (completely dark) then masking is not as important. However, masking the unused portions of the screen does provide the best viewing experience.


I suggest you do some searches on this forum with your projector model, the words "anamorphic" and "masking".


Have fun! I hope this helps...


Paul

 

[brodi]

Holly. Are you telling me projectors can squeeze and unsqueeze an so called anamorphic encoded dvd to fill the screen and still mantain proper aspect ratio. I know how 35mm anamorphic projectors handle a squeeze image. Is the anamorphic 2.35 encoded dvd using simular encoding that

projectors can recognize.


I defintely exited now. Thanks I'll do a heavy search.

 

[Jim Ferguson]

The amount of squeeze the projector does for anamorphic sources is constant. It does not depend on the aspect ratio of the actual movie. If a movie has a 2.35:1 aspect ratio, it will correctly show black bars on a 16:9 (1.78:1) screen whether it's anamorphic or not. In one case the projector would do the "anamorphic squeeze" and in the other it wouldn't.

 

[brodi]

So that means that you must have horizontal masking for

2.35:1 movies if you want it to look good. Correct?

 

[tyanger]

another newbie question:


Regarding CRT's, when you adjust your aspect ratio to view anamorphic material on a wide screen, I believe people have said that what is happening is the raster is reduced(vertically) so you are using less of the available phosphor. If thats the case how many hours of use will it take to get significant burn in? What if 70% of the time I'm watching widescreen material and the rest is 4:3. How long will it take before I start noticing the burn when watching 4:3 material? If I'm misunderstanding what is going on here, please help!

 

[Jim Ferguson]

In a darkened room, with a CRT projector, on a 16:9 screen, I personally haven't felt the need to use horizontal masking on 2.35:1 movies. I'd love to have a nice 4-way masking system, but I don't feel significantly deprived by not having one.

 

[pkarmouche]

Quote:

Originally posted by tyanger if 70% of the time I'm watching widescreen material and the rest is 4:3. How long will it take before I start noticing the burn when watching 4:3 material?

There are many opinions out there, do a forum search for "burn".


The consensus seems to be, if you do not drive the projector hard (keep the brightness and contrast levels set properly in a darkened room) - the phosphor won't start showing wear for a very high number of hours.


Paul