![Film-Tech Cinema Systems](http://www.film-tech.com/images/masthead.jpg) |
|
Home
Products
Store
Forum
Warehouse
Contact Us
|
|
|
|
Author
|
Topic: About MDI mirco-perf distance/resolution
|
|
|
|
Marcel Birgelen
Film God
Posts: 3357
From: Maastricht, Limburg, Netherlands
Registered: Feb 2012
|
posted 09-14-2017 12:29 PM
Like Steve already mentioned, it's best to have them send you some samples so you can judge for yourself. Also, if you do not have a projector in place, at least use a very bright flashlight to light it up from the front, because with only ambient light, your judgement will most likely be off.
Our screening room uses a micro-perf screen with 0.5mm perforation and about 30k holes per sq ft. and a gain of ~0.95. Most microperf screens roughly follow those specifications. At least around here, I couldn't find a reputable source for perforations smaller than 0.5mm.
Previously, we used a woven screen, but the weaves were still noticeable in the front row and were pretty annoying in bright scenes. Although woven screens are superior for sound, the micro-perf screen didn't impact the perceived sound quality in any way, but it did greatly improve the image quality.
Now, in the first row, which is about 9 feet away from the screen, you can still notice the perforations if you know what to look for in very bright scenes, on the second row, in which your head will be about 15 ft. away from the screen, the perforations are practically invisible, also during the brightest scenes.
We did have to adjust the zoom level which we used for content with an AR of 1.77, because in some rare cases at the particular zoom level and especially with 4K content, we would get some noticeable moire patterns. So, we're not using the full height for the screen now in 1.77.
| IP: Logged
|
|
|
|
All times are Central (GMT -6:00)
|
|
Powered by Infopop Corporation
UBB.classicTM
6.3.1.2
The Film-Tech Forums are designed for various members related to the cinema industry to express their opinions, viewpoints and testimonials on various products, services and events based upon speculation, personal knowledge and factual information through use, therefore all views represented here allow no liability upon the publishers of this web site and the owners of said views assume no liability for any ill will resulting from these postings. The posts made here are for educational as well as entertainment purposes and as such anyone viewing this portion of the website must accept these views as statements of the author of that opinion
and agrees to release the authors from any and all liability.
|
|
|
|