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This topic comprises 2 pages: 1 2
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Topic: 4k vs 2k on 30' wide screen
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Steve Guttag
We forgot the crackers Gromit!!!
Posts: 12814
From: Annapolis, MD
Registered: Dec 1999
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posted 01-04-2019 06:57 AM
Just noting that the model numbers the OP listed (CP4325 and CP2315) are both RGB laser projectors, not xenon.
The CP4325-RGB can hit 6000:1 on the contrast ratio so, as 4K goes, it beats most any xenon 2K machine by a factor of 3:1
For a 10-year investment...where do you technology going? 10-years from now, 4K will likely be very much the standard if we aren't already moving to 8K.
The point some make about not having a lot of 4K content, at the moment, is valid but slowly, that is changing and will continue to do so since the ultimate end-game for movies in the home...which is already 4K on all new systems (of any size).
If I'm right and you are talking about laser projectors, definitely do NOT undersize the projector. The key to laser life is running them cool. If the projector can barely hit your light or even be in the 85-90% power range on day-1, you'll be hating life when it can't make light before the 10-years is up. Most rate the laser life as when it drops to 1/2 output and typically in the 20K-30K hours. But 1/2 output of 14fL is 7!!! Once it drops below 11fL you are out of spec and it WILL start to look dingy before then. So think a bit of down-the-road.
Another thing to consider is protecting your investment. Since you are a single, I'd recommend on getting an extended warranty for those 10-years. Things do break and you might not be able to find the $10,000-$20,000 to get it fixed on no notice. So you might weigh the cost of an appropriately sized 2K projector, warranted for 10-years versus the 4K with the standard 3-year warranty.
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Bruce Cloutier
Expert Film Handler
Posts: 161
From: Gibsonia, PA, USA
Registered: Aug 2016
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posted 01-04-2019 10:22 AM
There is value in up-scaling 2K content to 4K. It is worth keeping that in mind although I cannot speak for the theater. In fact, in my home situation I have given up waiting for 4K content. I have one of the original LG 4K LM8600 panels. By original, I mean it was probably the first in western PA and my dealer was one of the first if not the first to obtain and place the product. We worked directly with a VP at LG to make that happen. The dealer later went to CES and all of the other dealers were all excited that they would be getting this 4K panel but Harry already had one in the showroom and one installed in a customer's home. So... yeah, it cost me like $20K.
Here it is like 10 years later and I still have not watched a single complete 4K movie on it. But, I never once regret the investment. The up-scaled image lacks any sign of pixels and images are so much better. It is an 86" screen and we sit 12 feet from it but you can walk right up to it and still be impressed.
All I am saying is that while all of your content may be 2K, how that content is rendered can make a big difference IMHO.
For a very large screen, you will want 8K even if original content remains 2K. Again IMHO.
Also, not everything is about ROI. That $40K invested in the image might be generating more value in intangibles than it would sitting in the bank at some pittance of an interest rate. If you are going to finance it, that is another matter. I'm personally debt-adverse. You don't want to get me on a rant about banks and financing.
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Leo Enticknap
Film God
Posts: 7474
From: Loma Linda, CA
Registered: Jul 2000
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posted 01-04-2019 12:27 PM
Tim,
It sounds to me like you're only considering Christie. Is this the case, and if so, have you already looked at the competitor models from Barco, NEC, and Sony, and ruled them out? If not, is there any reason why not?
If you did not previously have a DCI system, you will also need a server/IMB, or IMS. That in turn could influence your choice of projector model.
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Leo Enticknap
Film God
Posts: 7474
From: Loma Linda, CA
Registered: Jul 2000
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posted 01-04-2019 01:43 PM
You have to balance early adopter issues vs. when the manufacturer pulls support. If you buy a newly released model, you face early adopter issues. If you buy a model that has been on the market for, say, over five years (e.g. the NEC 3200/3240 or Barco B series), the possibility exists that the manufacturer may cease production and then discontinue spares support a couple of years later. IMHO it would probably be unrealistic to plan to continue running a projector in revenue-earning service for more than 2-3 years after OEM spares availability has been discontinued.
Therefore, IMHO, if a ten-year service life is important, my gut feeling would be to go for a model that has been on the market for 2-3 years. An older model, still in production, which has an unusually large market share (i.e. there are a lot of them in use, and therefore spares support is likely to continue for some time), would also likely be OK. But an older model, still in production, but which never sold in large numbers, is a risk.
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