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Author
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Topic: best digital projector for 30 feet screen
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Dave Macaulay
Film God
Posts: 2321
From: Toronto, Canada
Registered: Apr 2001
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posted 09-09-2012 09:32 AM
For 30 foot screens there are new projectors coming that will be considerably less costly than current solutions. It does depend a bit on the 3D system: all lose a lot of light in 3D and the new projectors will be at their limits at 30 feet - I really doubt any matte screen 3D system will be viable with them on a 30' screen. The new TI chip is supposed to be released in production quantities in December, with projector deliveries soon afterward. Hard data on these projectors is currently sparse: I don't think any of the manufacturers have anything on their web sites although they are being promoted in the industry using "feature lists" but no detailed specs or product images.
For current 2K projectors, whatever is best supported in your region is probably the best bet. The differences are relatively slight, each has its benefits IMO. I've had most experience with Barco and they are quite good. The 2kW Barco 12C is totally air cooled which has benefits in maintenance cost over the comparable competitors, plus Barco air filters are permanent so you won't be buying replacements regularly.
If you want 4K (not much need at 30 feet) I would tend towards Barco as well, I like the serviceability in their 1.4" B models.
Many here seem to share a poor opinion of Sony projectors but they are 4K (excepting in Real-D 3D mode) and at 30 feet, with a relatively low power lamp, the light engine degradation issue should be minimized. Personally I would stick with a TI DLP system.
Christie and NEC are both good systems. Cinemeccanica and Kinoton projectors are actually Barco inside but if either has better support in Pakistan that would be a consideration.
For servers the current best choices (IMO) are Doremi or Dolby, then GDC, then the others.
Dolby 3D uses a matte screen so the image hotspot issue with a silver screen is eliminated. For any matte screen 3D solution you will need a larger lamp than with silver screen systems, since the gain of the silver screen gives a brighter image (with a nasty hot spot).
There are other matte screen 3D systems with active LCD glasses: the cost of the glasses becomes an issue, plus they need their batteries serviced as well as washing (Dolby glasses are also washed on site). These are popular here only in industry screening rooms, the studios don't seem to like the Dolby system and won't accept a silver screen because of the hotspotting. With a controlled clientèle, damage to and theft of the expensive glasses is a non-issue. I don't think there's a public (non-IMAX) cinema in Canada with an active glasses 3D system.
Silver screen systems use recyclable glasses, returned to the manufacturer for a credit after use while new glasses are purchased as needed. As far as I know the Real-D "free glasses" deal is not available in Asia, and you would also have to pay shipping costs to their recycling facility. Possibly you can wash the glasses on-site if you want to? Master Image is the direct alternative to Real-D and has about the same performance. I don't know about the Real-D contract terms outside of North America, but here the equipment is leased to you "free" and you pay a fee per 3D ticket. MasterImage sells you the equipment and you just buy the glasses after that.
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