*Unofficial* Mitsubishi HC3800 Thread - Page 10

The chart list 120" (104.5" x 58.8")diagaonal at 50cm(19.8") above the center of the lens and a 100" (87.1" x 49") diagonal image at 42cm(16.5") above the center of the lens.

This would mean the offset is 33.5% not 29% as reported by projector central.

Rather 34%? 100 cm height and 34 cm offset...

edit: Legairre was first...

Why in the world would you use inches, centimeters, and meters all in a single graph?

I mean come on... pick one and stick with it for heck's sake!

I may have been first, but I said 33.5%. You hit it dead on with 34%.

@ HiHoStevo

It's from Mitsu specs...

That is steep.

It would have helped if each column was labeled with the appropriate dimension unit.
For a Mitsubishi Digital Electronics America, Inc. document, it would be more appropriate to use inches and feet.

My HC1500's offset is 35% so I guess I won't be changing much other than the center of the HC3800's lens being 2.5" off center while the HC1500's is dead center.

Indeed. Those of us with ceilings at 8' or less won't be able to go very big with this projector ceiling mounted (about 110" max). It's a darn shame, as I'd really like the HC3800 to be on my short list.

Rider are you sure 110" would be the max for an 8' ceiling? My HC1500 with the 35% offset is running on a 108" screen with a ceiling height of 7' 4". The projector is tilted up slight and the image is 21" off the floor. This height puts the bottom 1/3 of the image at eye level. http://www.avsforum.com/avs-vb/showt...7#post17270937

I should also say that I know tilting is not for everyone, but if you want to go bigger without keystoning it does work. A very slight tilt can raise the image a 5 or 6 inches.

Does anybody know when will be the first shipment for this projector? I have 8' ceiling, 106" screen, and the distance between the screen to my projector is 12'. Would that be sufficient to install this projector?

Ouch. I preordered but that is going to throw a major wrench in my plans for a 133" screen.

Hmm...

Where did you pre-order from?

Provantage.

I was prepared to tilt a little as I did with my Mitsubishi HD1500 on a 106" screen and go with my 120" screen but the offset being even larger than listed makes this even harder...

That is my point...... whoever made up this chart must have been in a big hurry... it looks like they grabbed information from several places to create this "Hodge-Podge" chart.

I mean the ONLY dimension that is labeled is the offset... the rest you just have to figure out on your own (although it was not rocket-science... just inconvenient).

Speaking of offsets..... do any of you remember what the offset was on the Mits HD1000U? I am guessing it was probably pretty close to the reported offset on the HC1500...... but that is as advertised just a guess.

I am currently using the HD1000U with a 9' ceiling on a 120" screen and the offset nicely slides underneath a ceiling fan that I have in the room... the bottom of my screen's border is at ~21" and I did use a tiny bit of tilt on the projector, but no keystone.

I have been considering upping the ante to a 135" screen.

Offset on the HD1000U is the same as HC1500. 35%.

Thank you

You could probably get a 120" in with some tilting of the projector and either keystone correction or tilting the screen. However, it's still not ideal. I wish Mits would have included at least some vertical lens shift like they did on the HC5500. I think the offset is going to be a deal breaker for me.

Anytime Steve. The HC1500, & HC1600 were pretty much clones of the HD1000U. The main difference is they went from a 4x, 7-segment wheel on the HD1000U and HC1500 to a 2x, 5-segment wheel on the HC1600 to get more lumen. Everything else stayed pretty much the same.

I'm not ready to give up on this projector yet. If you use the long end of the zoom then a small amount of tilt will result in a fairly large rise in height. I'm going to setup a spreadsheet tomorrow so I can play with the numbers - on company time

It was actually quite average for PJ's 4-5 years ago. But yes, it seems like today most PJ's are made with little to zero offset.

I myself like the offset. My ceilings are high'ish and I don't like a long pole down to mount the PJ, nor warning tall people to DUCK!
. Plus, having it up high is quieter than it hanging right above your head.

That is of course if you're not in a low ceiling basement (or the like).

For those of us who want/need some good offset, we have hardly anything to chose from these days But it looks like the HC3800 will be on my list due to it's offset (otherwise I would have bought a Benq W20000 already!). >>> which by the way, you should look into that (W20000) if you don't want any offset!

The HC3000 was initially listed as having more offset than it actually did so this could be another 'goof'. I think the quoted spec for the 3000 was off by about 3% so if that follows here many of you would probably be more in the ballpark. Just speculation but it's certainly possible.

Jason

It's too bad the PJ companies can't make 2 different "offset" projectors of the same model. It wouldn't be economically feasible?

It's too bad the PJ companies can't make 2 different "offset" projectors of the same model. It wouldn't be economically feasible? If they did, they would definitely sell a lot more projectors.

for those of you that are worried about the offset: I have 8 ft ceilings with my 1500 and i simply tilted the projector upward slightly and then Keystoned the image very slightly to correct it. The picture looks EXACTLY the same. The keystoning made absolutely no difference. I did this same exact thing with my HD1000 before my 1500 and i did my dad's 1600 the same way. All of them look the same whether keystoned or not. I can only assume that this PJ will be the same way. Dont be fooled by the folks that say keystoning ruins the picture. It has very little effect on the quality.

Someone remind me... what was the offset of the Infocus 4805? I think the offset on this one is a deal-killer for me, much like the offset on the new Infocus PJs.
:-(

I would absolutely love to look into the W20000 but I am afraid it is in the stratosphere when I am talking about my budget

4805's offset was 27%

Does the offset of the projector remain constant throughout the zoom range? That doesn't seem right to me. I would expect the offset to be reduced as the projector gets closer to the screen, and the lens is zoomed.

Oh, wait. I think I found my own anwer. Offset is calculated by looking at the center of the image, not the bottom of the image...