[boomstick]

What benefits, besides size, will the 7in plans have over the 15in plans - if any?

[xeo]

The benefits are simple - a beamer with 7" TFT is smaller than one with 15" - but most likely not cheaper ...

but you don't have a disadvantage at all when buying the 15" guide because you get the 7" guide for free ...

And if you wanted to build a 7" beamer you could use the time until the new guide is available for research

[OKflyboy]

I had the exact same concern when I bought my plans, but like xeo said, anyone who buys the 15" plans now will get the 7" plans for free when brainchild finishes them.

As far as I know The 7" will be based on the 7" Lilliput available on ebay. This panel is XGA compressed, which I think means 'not quite' XGA resolution. (correct me if I'm wrong here, guys). So you're looking at slightly less resolution, the trade, a box less than half the size... Smaller panel size also means smaller screen sizes at the same distance from projector to screen vs. the 15"

I've also heard the 7" will be a little more difficult to construct, more precision measurements, etc. I've decided since I'm new to all this that the simpler 15" design would be best to cut my teeth with. If I pull the 15" off well, I can always try a 7" later.

Anyway, just my $0.02

Also, this has been addressed before. Check out:

http://www.lumenlab....p?showtopic=115

This post has been edited by OKflyboy: 17 February 2004 - 05:06 PM

[Rorshach]

Quote

Smaller panel size also means smaller screen sizes at the same distance from projector to screen vs. the 15"

That depends on if the same triplet lens is used in the 7" design. Brainchild may have a totally different lens setup compared to the 15" plan, so projected image size over distance is yet to be determined - Brain?

[brainchild]

Yeah I have a few lenses to try but I'm trying to get the zoom finished for this one.

[OKflyboy]

Quote

That depends on if the same triplet lens is used in the 7" design. Brainchild may have a totally different lens setup compared to the 15" plan, so projected image size over distance is yet to be determined

Ahh, too true... Hadn't thought of that. (I did remember the zoom lens, but not until a few minutes ago...)