Mitsubishi HC4000 - Page 10 - AVS Forum
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post #271 of 1524 Old 12-31-2010, 04:17 PM
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Quote:
Originally Posted by Vietcu View Post

I am going from a Mitsu hc3000, I absolutely loved that projector. I am switching to a different brand the Epson 8700, which was a little pricier but I don't think I would have like not being able to shift the lens. .

I believe the HC3000 has the same/similar offset as the HC3800/4000, so if you're mounting it in the same spot (just replacing the HC3000), you shouldn't need lens shift.
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post #272 of 1524 Old 12-31-2010, 08:25 PM
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Shopping for my first projector and the HC4000 is on my list. Is the HC6800 worth $450 over the HC4000?
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post #273 of 1524 Old 01-02-2011, 06:18 PM
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what is a good mount for the HC4000?
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post #274 of 1524 Old 01-02-2011, 06:58 PM
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Quote:
Originally Posted by StevenC56 View Post

Shopping for my first projector and the HC4000 is on my list. Is the HC6800 worth $450 over the HC4000?

They are 2 different technologies. The HC6800 is an LCD and the HC4000 is a DLP.

I tend to not dig LCD projectors (though I do like LCD flatscreens), so IMO no, I wouldn't take the HC6800 over the HC4000, regardless if they were even the same price.

Also, the HC6800 needs (and uses) a dynamic iris to achieve good contrast performance. DI's have many pros/cons and I'm also one that doesn't like the negative visible effect DI's have on the image, so I steer towards PJ's that don't rely on DI's, like the HC3800 (the previous model to the HC4000).
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post #275 of 1524 Old 01-03-2011, 02:06 AM
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Does the HC3800 and HC4000 have the same lens ? so both have the same level of sharpness, or is the HC4000 more sharper ?

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post #276 of 1524 Old 01-03-2011, 12:25 PM
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Quote:
Originally Posted by jamieuk147 View Post

Does the HC3800 and HC4000 have the same lens ? so both have the same level of sharpness, or is the HC4000 more sharper ?


From all accounts they are identical except for the DLP chip, and probably different FW/SW to handle the different chip (or different processor chip at the most).
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post #277 of 1524 Old 01-03-2011, 09:41 PM
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Hi,

I plan to ceiling mount the HC4000 a distance of 17'2" from the screen. The room is 20'x20', and seating will be 19' and 12' feet away (2 rows total). I'm considering a white AT screen with 1.2 gain (9'6" ceilings). My ftL is just over 12 for a 137.7" screen and 14.35 ftL for 126.6" (assuming a lumen output of 565 lumens from one online review).

While I've read that 12 ftL is acceptable for most viewing, I'm concerned about degradation of the brightness over time. Does anyone have any experience with a similar setup? any other things that I should consider? Unfortunately, I can't get to see this type of setup in person before I buy :-/.

I almost feel that I'm going to have to go with the smaller screen size or change projectors to a higher lumen output. My room has no windows, and lighting can be completely controlled (for movies, lights will be off, and, for sports, I'll turn ons some lights in the back). I intend to watch movies, TV, and a lot of sports.

Any advice about suggested screen size would be appreciated.
Thanks!
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post #278 of 1524 Old 01-03-2011, 11:06 PM
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You'll have a good black level at those screen sizes, and it will get better as the amp ages, but yeah, it will be on the dim side and get worse quickly.

Might consider a higher gain screen.
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post #279 of 1524 Old 01-20-2011, 04:44 PM
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Hi
I am planning on buying an HC4000 and wondering where in my room to mount it (how far up) and what would be a good screen size for optimal viewing.

My room is 17'x13 1/2' and 8' high. I wanted to use the 17' as the length and two rows of seats but my wife disagrees. She doesnt like the two row theater like crap. She wants a single row and wants me to use the 13 1/2' as the length of the room. Fortunately one wall is recessed which gives me extra 1 1/2' making it a total of 15' available length. The recessed portion is 112"/113" wide and 1 1/2' deep. I can squeeze in a screen as wide as 110" and still have a few inches left on each side. Or I can mount the projector on the recessed portion and project on the opposite flat wall. I understand that I have to mount the HC4000 as much close to the ceiling as possible to get the best/biggest screen size. I used the calculator on projector central but I cant figure it out.

My question is that if I mount the projector close to the ceiling and my throw distance is 13 1/2' (15' minus the hc4000's depth (10.6") plus a few inches) whats the biggest screen size I can go for without doing any keystone correction (or some keystone correction if it doesnt affect the image).
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post #280 of 1524 Old 01-20-2011, 06:50 PM
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Quote:
Originally Posted by gemi View Post

Hi
I am planning on buying an HC4000 and wondering where in my room to mount it (how far up) and what would be a good screen size for optimal viewing.

My room is 17'x13 1/2' and 8' high. I wanted to use the 17' as the length and two rows of seats but my wife disagrees. She doesnt like the two row theater like crap. She wants a single row and wants me to use the 13 1/2' as the length of the room. Fortunately one wall is recessed which gives me extra 1 1/2' making it a total of 15' available length. The recessed portion is 112"/113" wide and 1 1/2' deep. I can squeeze in a screen as wide as 110" and still have a few inches left on each side. Or I can mount the projector on the recessed portion and project on the opposite flat wall. I understand that I have to mount the HC4000 as much close to the ceiling as possible to get the best/biggest screen size. I used the calculator on projector central but I cant figure it out.

My question is that if I mount the projector close to the ceiling and my throw distance is 13 1/2' (15' minus the hc400's depth (10.6") plus a few inches) whats the biggest screen size I can go for without doing any keystone correction (or some keystone correction if it doesnt affect the image).

At 13 1/2 throw length it is as big a screen as you can fit in that room. The calculator shows that a 110" screen is in the sweet spot of the 13 1/2 ft distance. A 110" screen is good from a throw length of 12 - 14 feet according to the calculator.

If you decide to use the recessed portion of the room then keep in mind the reflection from the screen on the 1 1/2 deep borders of your walls if that makes sense. I would definitely black that out.
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post #281 of 1524 Old 01-20-2011, 07:59 PM
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Thanks for replying. I have been reading and searching this and some other sites for at least a month now. I have been jumping from the receiver section to the speaker, projector, screen and other forums on a daily basis. I have some questions and hope to get some helpful answers.

What do you guys think of the height. If I mount it as close to the ceiling as possible, let's say about 8" ( if that's practical and I would also have to find a mount that meets the specification ) , how high will the bottom of the screen be from the floor? Assuming that I am using a 110" screen, I am trying to figure out if it's not too low. How low is too low?.
I really like to use a 120" screen or whatever the optimum size allowed is. 113" is the width of the recessed part of the wall, think I can squeeze something like a 116" (diagonally) in there, if the calculator gods allow. Shouldn't using the opposite wall (flat) be more suitable? Just mount the projector in the recessed part at the top and use the bottom for equipment. Place the seats in front of the equipment rack, that should slow down the kids some.

For an 8' ceiling, is it better to shelf/wall mount or ceiling mount? Do you get better placement/tweaking with one or the other?

Any recommendations for a mount, best suited for this kind of setup?

I am planning to order a Jamestown screen with the HC4000. Are any of you guys using a Jamestown with their pj? What do you think of the screen and do you have a white or a grey one.

This room is a dedicated media room, no windows and I am planning to install a light control system. I will be watching sports/tv, gaming and watching movies most of the time. For watching sports or gaming, I would like to have some sort of light on (will be controlled). I was thinking of getting a screen with 1.1 or 1.0 gain. I am not sure if that would be the right screen type for this situation. What do you guys think? Or should I get a grey screen instead?
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post #282 of 1524 Old 01-20-2011, 08:04 PM
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Quote:
Originally Posted by gemi View Post

I used the calculator on projector central but I cant figure it out.

Don't waste your time with PC's calculator, use Mitsubishi's calculator and all your questions will be answered>

http://global.mitsubishielectric.com....html?p=hc4000
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post #283 of 1524 Old 01-20-2011, 09:55 PM
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Quote:
Originally Posted by fleaman View Post

Don't waste your time with PC's calculator, use Mitsubishi's calculator and all your questions will be answered>

http://global.mitsubishielectric.com....html?p=hc4000


Thanks, this one makes more sense.

What does the offset value mean? Is it just the extra distance from top of the screen to the pj lens?

Where does the keystone setting come in? What is it?

If I tilt the projector up in order to move the screen a little higher from the floor, does it affect the image quality in any way.

If the projector height is 92" on a 96" ceiling

A. 120" screen will be 9.8" from the floor and the offset will be 19.8".

B 110" screen will be 16.4" from the floor and offset is 18.1".

This is my first pj setup and I am not sure what the recommended height for the screen is from the ground.
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post #284 of 1524 Old 01-20-2011, 10:08 PM
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Quote:
Originally Posted by gemi View Post

Thanks, this one makes more sense.

What does the offset value mean? Is it just the extra distance from top of the screen to the pj lens?

Where does the keystone setting come in? What is it?

If I tilt the projector up in order to move the screen a little higher from the floor, does it affect the image quality in any way.

If the projector height is 92" on a 96" ceiling

A. 120" screen will be 9.8" from the floor and the offset will be 19.8".

B 110" screen will be 16.4" from the floor and offset is 18.1".

This is my first pj setup and I am not sure what the recommended height for the screen is from the ground.

Ok. No keystone correction. Should be avoided.

http://www.theprojectorpros.com/lear...correction.htm

Now, how much distance from the floor.
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post #285 of 1524 Old 01-20-2011, 10:19 PM
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Quote:
Originally Posted by gemi View Post

Thanks, this one makes more sense.

What does the offset value mean? Is it just the extra distance from top of the screen to the pj lens?

Where does the keystone setting come in? What is it?

If I tilt the projector up in order to move the screen a little higher from the floor, does it affect the image quality in any way.

If the projector height is 92" on a 96" ceiling

A. 120" screen will be 9.8" from the floor and the offset will be 19.8".

B 110" screen will be 16.4" from the floor and offset is 18.1".

This is my first pj setup and I am not sure what the recommended height for the screen is from the ground.

I've been reading that the bottom of the screen should be around 3' up from the floor. That's probably not even possible with the HC4000 and your 8' ceiling height.
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post #286 of 1524 Old 01-20-2011, 10:49 PM
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Quote:
Originally Posted by gemi View Post

Thanks, this one makes more sense.

What does the offset value mean? Is it just the extra distance from top of the screen to the pj lens?

This projector has what's called a 'fixed offset'. There will always be some amount of offset, though it's tied to the screen size (larger screen, more offset in inches, smaller screen, smaller offset).

This is one of the main reasons to use the calculator, to see if a fixed offset PJ like this can fit your room size for the screen size you want.

A projector with Lens Shift will allow you to change the offset value w/o changing the screen size, so it makes it easier to install and set up a projector (in most cases, but not all). This PJ does not have Lens shift, so you have to make sure it will work in your room/setup.


Quote:
Originally Posted by gemi View Post

This is my first pj setup and I am not sure what the recommended height for the screen is from the ground.

There are different points of view about this. Some say to have your eye level about 1/3 up from the bottom of the screen. But this is assuming you are sitting fairly upright and most people (especially me) lounge/lean back with our heads naturally (comfortably) tilted back. So take that into account. In my room my eye level is about even with the bottom of the screen, but again, I lean/lounge back quite a bit so this is about right for 'me'.
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post #287 of 1524 Old 01-20-2011, 11:05 PM
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Quote:
Originally Posted by StevenC56 View Post

I've been reading that the bottom of the screen should be around 3' up from the floor. That's probably not even possible with the HC4000 and your 8' ceiling height.

At 80" screen size I should be 36" above.

But I don't think that's happening.

At 90" its 29.5".

At 100" its 22.9".

At 110" its 16.4".

At 120" its 9.8".
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post #288 of 1524 Old 01-20-2011, 11:23 PM
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Can the HC4000 work with a 2.35 screen for cinemascope and 16:9, or do you have to move up to the HC6800 to do that? Anybody with either a 3800 or 4000?
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post #289 of 1524 Old 01-21-2011, 06:49 AM
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Quote:
Originally Posted by gemi View Post

Hi
I am planning on buying an HC4000 and wondering where in my room to mount it (how far up) and what would be a good screen size for optimal viewing.

My room is 17'x13 1/2' and 8' high. I wanted to use the 17' as the length and two rows of seats but my wife disagrees. She doesnt like the two row theater like crap. She wants a single row and wants me to use the 13 1/2' as the length of the room. Fortunately one wall is recessed which gives me extra 1 1/2' making it a total of 15' available length. The recessed portion is 112"/113" wide and 1 1/2' deep. I can squeeze in a screen as wide as 110" and still have a few inches left on each side. Or I can mount the projector on the recessed portion and project on the opposite flat wall. I understand that I have to mount the HC4000 as much close to the ceiling as possible to get the best/biggest screen size. I used the calculator on projector central but I cant figure it out.

My question is that if I mount the projector close to the ceiling and my throw distance is 13 1/2' (15' minus the hc4000's depth (10.6") plus a few inches) whats the biggest screen size I can go for without doing any keystone correction (or some keystone correction if it doesnt affect the image).

I have my HC4000 ceiling mounted in my finished basement with dimensions very similar to yours. The projector is in the middle of the long wall and throws onto the opposite wall (front of lens to wall is ~12ft). I have the zoom a hair under max giving me a picture size ~5-1/2ft wide (~115in diag).

The ceiling is acoustical tile and about 7ft from the floor. The projector is mounted upside-down with a DIY mount with the "feet" almost touching the ceiling (meaning the lens is only ~2 inches from the plane of the ceiling).

I do have to tilt the projector slightly up towards the ceiling to get the image the appropriate height off the floor. There is a very slight keystone that I don't consider noticeable enough to do anything about.

Hope this helps.

EDIT: I just noticed you said your ceiling is 8ft high. I'll bet you can get the image at just the right spot on the wall without having to do any tilting (and hence no keystone issues).
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post #290 of 1524 Old 01-21-2011, 02:20 PM
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There appears to be a REALLY good package deal available out there involving this projector right now at a big box retailer.

Projector
Motorized Screen
Mount
Denon AVR 391

1499

This is a great deal right?
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post #291 of 1524 Old 01-21-2011, 02:49 PM
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Quote:
Originally Posted by texonfire View Post

There appears to be a REALLY good package deal available out there involving this projector right now at a big box retailer.

Projector
Motorized Screen
Mount
Denon AVR 391

1499

This is a great deal right?

right
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post #292 of 1524 Old 01-21-2011, 08:01 PM
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Quote:
Originally Posted by texonfire View Post

There appears to be a REALLY good package deal available out there involving this projector right now at a big box retailer.

Projector
Motorized Screen
Mount
Denon AVR 391

1499

This is a great deal right?

Please PM me what retailer has this deal.
EDIT: I found it. Not that great of a deal for me. In CA I pay sales tax. The mount, screen and receiver don't suit me and even if I sold them it wouldn't be a great deal as little as I would get for them. Too bad they don't offer just the projector by itself.
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post #293 of 1524 Old 01-21-2011, 09:18 PM
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Quote:
Originally Posted by StevenC56 View Post

Can the HC4000 work with a 2.35 screen for cinemascope and 16:9, or do you have to move up to the HC6800 to do that? Anybody with either a 3800 or 4000?

Yes both the 3800 and the 4000 will do CIH and toggle between 2.35:1 and 16:9 by pressing a single button on the remote....
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post #294 of 1524 Old 01-21-2011, 09:40 PM
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Quote:
Originally Posted by Ahamay17 View Post

Yes both the 3800 and the 4000 will do CIH and toggle between 2.35:1 and 16:9 by pressing a single button on the remote....

Sounds too simple. No other adjustments need to be made when going between the 2 ratios using a 2.35 screen?
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post #295 of 1524 Old 01-21-2011, 10:14 PM
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Quote:
Originally Posted by StevenC56 View Post

Sounds too simple. No other adjustments need to be made when going between the 2 ratios using a 2.35 screen?

You do have to mount it different then how you would for CIW (native 16:9 and 2.35 having black bars on top and bottom)

Once thats done It is very simple, no other adjustments... I switch back and forth from a 123" 2.35 to a 100" 16:9 while maintaining a constant 48" height...
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post #296 of 1524 Old 01-22-2011, 07:34 AM
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Quote:
Originally Posted by Ahamay17 View Post
You do have to mount it different then how you would for CIW (native 16:9 and 2.35 having black bars on top and bottom)

Once thats done It is very simple, no other adjustments... I switch back and forth from a 123" 2.35 to a 100" 16:9 while maintaining a constant 48" height...
How do you figure out the difference in mounting? They don't even list 2.35 as on option on their projector calculator for the HC4000-Only 16:9
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post #297 of 1524 Old 01-22-2011, 10:20 AM
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Quote:
Originally Posted by vttom View Post

I have my HC4000 ceiling mounted in my finished basement with dimensions very similar to yours. The projector is in the middle of the long wall and throws onto the opposite wall (front of lens to wall is ~12ft). I have the zoom a hair under max giving me a picture size ~5-1/2ft wide (~115in diag).

The ceiling is acoustical tile and about 7ft from the floor. The projector is mounted upside-down with a DIY mount with the "feet" almost touching the ceiling (meaning the lens is only ~2 inches from the plane of the ceiling).

I do have to tilt the projector slightly up towards the ceiling to get the image the appropriate height off the floor. There is a very slight keystone that I don't consider noticeable enough to do anything about.

Hope this helps.

EDIT: I just noticed you said your ceiling is 8ft high. I'll bet you can get the image at just the right spot on the wall without having to do any tilting (and hence no keystone issues).

Thanks, that's encouraging. I really want a 120" screen. If I mount it 2" from the ceiling (like you did), then

At 90" its 31.5".

At 100" its 24.9".

At 110" its 18.4".

At 120" its 11.8".

Can you please share the link for the DIY mount or if one is available online somewhere that would allow me to place the pj as close to the ceiling as possible.

(@ fleaman)
Quote:


There are different points of view about this. Some say to have your eye level about 1/3 up from the bottom of the screen. But this is assuming you are sitting fairly upright and most people (especially me) lounge/lean back with our heads naturally (comfortably) tilted back. So take that into account. In my room my eye level is about even with the bottom of the screen, but again, I lean/lounge back quite a bit so this is about right for 'me

Sometimes its wise not to be too greedy. I should probably sit down on the recliner and go with the screen size that provides appropriate height from the floor. I also like to lean back a little and be comfortable when watching.
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post #298 of 1524 Old 01-22-2011, 10:38 AM
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Another thing I wanted to discuss was that how far should I mount the pj from the screen.

According the calculator on Mitsubishi's website for a 120" inch screen my projection distance can be anywhere from 12.1' to 18' (8' ceiling and 2" lens height) and the image will be 11.8" from the ground. I am assuming that it should be mounted as close as possible because that would give me the best brightness (?) or am I missing something else?

On the other hand if I mount it at around 14' I would have to use the zoom function to fill the screen. Disadvantage less brightness? PQ? or both?

Can mounting at 14' give me a 120" screen with more distance (>11.08") from the floor than mounting at 12.1' (the shortest distance according the calculator) ? My guess is no but I am not sure (typical newb).
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post #299 of 1524 Old 01-22-2011, 11:15 AM
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Offset is tied to the screen size you use. So it will be the same whether you mount close or far and use the zoom to 120". Zoom will not change offset, only the size of the screen will.

As far as the pros/cons regarding mounting closer or farther, these are some basic rules:
> Mounting closer will give more brightness, less contrast, less black levels (due to more brightness)
> Mounting further will be dimmer, better contrast, better black levels (due to it being dimmer)
> Middle of the zoom usually will be the sharpest (though you would have to do a scientific up close test of most of the screen area to see it). This is usually not noticable.

Even the brightness/contrast differences are usually not noticable by the eye, though they are usually measurable with a light meter.
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post #300 of 1524 Old 01-22-2011, 11:34 AM
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Quote:
Originally Posted by fleaman View Post

Offset is tied to the screen size you use. So it will be the same whether you mount close or far and use the zoom to 120". Zoom will not change offset, only the size of the screen will.

As far as the pros/cons regarding mounting closer or farther, these are some basic rules:
> Mounting closer will give more brightness, less contrast, less black levels (due to more brightness)
> Mounting further will be dimmer, better contrast, better black levels (due to it being dimmer)
> Middle of the zoom usually will be the sharpest (though you would have to do a scientific up close test of most of the screen area to see it). This is usually not noticable.

Even the brightness/contrast differences are usually not noticable by the eye, though they are usually measurable with a light meter.

I like a picture with better contrast. I should then mount it closer to the rear wall and find a mount that would allow me to place it as close to the ceiling as possible. Any suggestions for mounts. Since Its closer to the rear wall may be I can use a shelf mount, but tilting may be an issue with that type of approach. Also the projector has to be upside down so I guess a ceiling mount is what I need.

Thanks for replying.
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