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Topic: Need help with what format to feed my 1/4 HD Mitsubishi HC3
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Joined: Dec 17, 2006
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I would like to say "Hi", this is my first post on the forum which has already provided many answers.

I currently have the 1/4 HD Mitsubishi HC3 ColorView projector.
Native 16:9 widescreen format with 960x540 resolution.

My question is what signal should I feed this projector? 720p or 1080i?

I watch channels that are broadcast in both 1080i and 720p but given the reletively low resolution of the projector, should I have my source output set at 1080i signal always or a 720p signal always?

720p seems to be the answer that comes to my mind first. Am I right?

My current Sat Reciever does not differentiate between the two formats automaticaly and outputs either one or the other to the projector. After what I assume would be upconversion for 480p signals and down from 1080i if I had the output set to 720p. Correct?

Will I loose anything by feeding it a signal set to 720p regardless of the origenal format? For example if the show was a 1080i signal.

Thanks.
[Edited by Astro1 on Dec 17, 2006 at 6:19 PM]
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Joined: Aug 25, 2005
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Use 1080i. That is the whole purpose of your projector having that resolution is made for since 540 is exactly 1/2 of 1080 and 960 is exacly have of 1920. The scaling is very easy and clean that way.
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I can see the logic in that. Thanks for your help.
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Joined: Dec 3, 2003
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From reading your first post, I can't help but think that you may be a little confused as to what resolution your projector actually displays. I have read many other posts that mirror this misunderstanding. Simply put, your Mitsubishi uses LCD chips that have a fixed resolution of 960x 540. That is all it will ever display. Any input that is not 960x540 will be scaled to 960x540. All digital projectors have a fixed resolution, whether it is 960x540, 1280x720 or 1920x1080. The confusion comes from reading the specs, when it states that your projector will accept a 720 or 1080 input. These inputs are then scaled to 960x540. This is where using 1080 for the input should theoretically be better than 720, as there is alot less scaling involved with nice even numbers, like 1/4 the input res. If you knew all of this already, I apologize and hope you enjoy your projector no matter what the input. Good Luck Biersy
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I did know that but thanks for your post regardless.

I actually have gotten rid of the DishNetwork Box that I originaly talked about, that would only output one format and not pass through the signal to let the projector do the scaling. My new box with my cable subscription actually does pass through the signal to the projector whatever it may be, letting it do the scaling instead of the cable box.

I found that my projector does a better job of scaling be it 1080i or 720p then my Scientific Atlanta 8300HD box, which was terrible. And a lot probably had to do with the fact that by letting the box scale, I was actually scaling twice firt the box then the projector itself.

I now have it set right and love it.