Originally Posted by noob00224
Can paint mixes have ALR properties?
ALR /Ambient Light Rejecting implies that the light is rejected, with some ALR fabrics having narrow viewing cones as a result.
Can paints do the same? Do paints just absorb the ambient light and reject it uniformly?
I don't think a paint can reproduce the technology incorporated in some screens like lenticular, but what about angular type ALR's?
Yes they can do "Angular"......that has always be easy enough to accomplish simply by maintaining Gain while at the same time deepening the Black and retaining Color dynamics.
Back not to terribly long ago, some few DIY detractors wanted to use just such a limit on viewing cone as a weaponized bludgeon....that is until Screen Mfg started embracing exactly the same "technology". Frankly speaking....advanced DIY Screen making has always been more on the cutting edge than it has been lagging behind playing catch up. Ultra sooth "4K Ready" surfaces for instance....such smoothness has always been a hallmark of a well done DIY Screen. The first noticeably proficient ALR(resistant) DIY Screens hit this Forum all the way back in 2004-05...resulting as an offshoot from the development of paint formulas that could enhance on-screen Contrast without muting White and colors. The caveat being that the more effort that is made to go further down that road, the more restrictive viewing come often becomes.
Candidly, it is exactly the resulting loss of viewing cone that is something that really good ALR (resistant) Paint solutions usually can avoid, and that has always led to the effort to avoid such. As such there are different levels one can aspire to have, something that really isn't practical as far as Mfg Screens are concerned.
The Angular aspect can be taken to extremes.....shucks....a Retro-Reflective Paint is another easily accomplished feature if one can place the Projector accordingly. But other issues such as Screen artifacts (graininess) can ruin the effort, just as they do with retro-reflective Mfg Screens. Such was why back then such longer viewing distances were always suggested by Mfg.
As for true Ambient Light Rejection...well we can still come close, certainly close enough to satisfy most wants and needs. We can also "mostly" avoid the graininess issue. And when one compares the level of proficiency of a painted solution to that of screens that cost $1000s of dollars, DIY'ing a ALR(rejection) screen can do a damnable good job of it.
So now then noob00224 , what's your poison?
Originally Posted by Dave in Green
How the actual performance of an ALR paint would compare with an ALR screen would require objective comparison testing by experienced, unbiased AV reviewers. Otherwise you would need to rely on marketing claims and user comments that may not always be objective and unbiased opinions from people with experience in making such judgments.
All throughout the history of DIY Screen making, such a drive to try to qualify DIY by making it undergo the same level of authoritative testing and evaluation that "some" Mfg Screens undergo has been used to dismiss and/or discredit the many extremely glowing testimonials made by the people that matter....the end users who post such exclamations on this Forum.
Really....it's much more clearly definable a choice that all that.
Here's a kicker...I personally have reached out to a few Members whose abilities could qualify them to do such...as well as the Representative of at least 3 Web-Based Review sites. So far, none has taken up the offer.....(Forum Politics no doubt...or demands that finished DIY Screens be provided...) and even Projector Central, who did their own take on what a supposed DIY painted screen would /should be (...and failed miserably...) never responded.
Peer reviews....literally a few 1000s of them have always been more than sufficient, so any attempt to belittle all those member's efforts to express their satisfaction with the end results should be viewed as just being no more or less subjective than the actual member's reviews themselves.