Panasonic makes some excellent projectors. Their install products really are some of the best on the market.
Their short throw models are pretty average overall. That is, for the ones linked to. It can do 50 to 100 inches in diagonal only. So, nothing larger or smaller.
Short throw projectors like that are EXTREMELY finicky when it comes to the screen you use and must be extremely precisely positioned. This is something I would keep in mind if you really think you need a 'short throw' model. You really want to justify that product to your needs as the typical use for short throw is whiteboard use, and they are installed for sub 100" white boards.
Panasonic makes some phenomenal ultra short throw models with a interchangeable lenses. 10,000+ lumens, huge size capability. Pricey.
Unfortunately, I think the industry misses out on 'shorter' throw projectors. Ones which can hit a 120" diagonal from 7 or 8 feet away.
I wouldn't be sold on Panasonic on this since they really don't offer much in 'short throw'.
I would look at this list...http://www.projectorcentral.com/projectors.cfm?g=1&hide=0&st=1&mfg=&p=400&p=4000&w=&r=&br=&ll=<g=&t=&db=&dt=&c=&ar=Wide+%2816%3A9-10%29&dvi=&wr=&pjl=&pjw=&pjh=&td=8&is=120&i=d&tr=&oop=1&sort=%24&sz=15
Most of those models have interchangeable lenses and require the shortest throw lens available. The Ricoh at the top includes the lens in the price, and has just a bit of zoom to the lens. It's a pretty interesting product.http://www.projectorcentral.com/Ricoh-PJ_WX3351N.htm
Wish it was LCD instead of DLP.
The NEC is the best on the list...http://www.projectorcentral.com/NEC-PA571W.htm
The short throw has some zoom range, it is really bright, and it can handle very large image sizes from a relatively short throw.
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