- Written by Mark Vignola
- Published on 18 October 2011
Home Theater Build: What am I looking for in a new projector?
In the last section of this series I am going to talk little about where I am looking to go with this theater. I think we all have a wish list of things that weâ€™d like to address in our systems...new equipment we want to get and places we want to make changes. Iâ€™ll address my own personal thoughts here, and talk a little about what goes in to my decision making.
Being primarily a video person, Iâ€™m always thinking about new display technology. I generally donâ€™t upgrade in consecutive years â€“ most often the increase in performance in consecutive years doesnâ€™t warrant the cost of the upgrade. We are approaching two product cycles after my RS-25 was purchased, so this year Iâ€™ll be on the lookout for possibly my next projector. What will I keep my eyes on? Iâ€™ll deal briefly with few areas of consideration that I believe we should all think about before we decide to spend money on a new projector.
The â€œHoly Grailâ€ of digital video has always been increased contrast. Manufactures have made great strides in this area. Just a few years ago blacks were more gray and shadow detail was severely lacking. However, there is still farther to push the envelope in the production of deep blacks. I still have yet to see a digital projector that doesnâ€™t cast a shadow when I walk in front of it when displaying an all black field. The gauntlet can and is being pushed forward by projector manufacturers, with better black levels being reported every year. Any new projector that I evaluate will be at this cutting edge, exhibiting best in class black level performance.
While increased contrast ratio is something that we will always talk about in new displays, it is worth noting that for projectors, the room will always be part of the equation. It is important to keep in mind that increasing a projectors contrast can be all but negated by improper room conditions. As we push the contrast envelope further and further, leaked and reflected light in the room becomes increasing important. Before spending money on a projector with huge contrast ratio numbers, take a critical look at your room â€“ if itâ€™s painted white, with white carpets, you may not gain much benefit from all of that extra money.
Personally, given my screen size, projector brightness hasnâ€™t been an important factor for me. At 92â€ Iâ€™m well within the range for most residential targeted home theater projectors. For those with bigger screens though, increasing brightness in a smaller and more economical package is always desirable. We are also looking for projectors that can produce a brighter picture, without sacrificing contrast. Again, while this isnâ€™t a major concern in my current set-up, this is an active area of innovation for projector manufacturers. If you like your image really big, advances in projector brightness will be worth paying close attention to.
Software and Features-
With any new crop of projectors, manufactures will always try and convince us that a given set of new set of features or innovations is a reason for us to buy their product. It is impossible to ignore these and while I generally feel that many are unnecessary, there are a few things that it is important to always keep an eye on. The first and most important of these, in my opinion, is calibration features. Displays have gotten increasingly advanced in their ability to be properly calibrated, making the purchase of costly external advices to make up for deficiencies in features unnecessary if the right unit is purchased. At the very least I look for a projector that is allows user calibration the gray scale, gamma and primary and secondary colors (commonly referred to as a Color Management System). I consider this to be the most important feature of any display â€“ whether projector or flat panel. I always pay attention to what advances manufactures are offering in the calibration features for a unit and, when possible, try and look at these features personally to determine whether they are actually sufficient to perform a proper calibration. Just because a unit possesses all of these features doesnâ€™t mean that they will be accessible, easy to use, or even functional. Because of this, every time Iâ€™m evaluating a new unit, I make sure to gain as much information as I can on what has been done, and in the case of systems I know, what has been changed.
Last year's JVC projector line up was a great example of why you must pay attention to not only whatâ€™s new, but also what has changed. The calibration menuâ€™s in my current JVC RS-25 are fantastic. Unfortunately, last year, JVC elected to make significant changes to the software and menu structure of its calibration system. Many reviewers, including myself, found these changes to be a large step backwards, making calibrations using internal controls exceptionally difficult. Had I been buying a projector last year, I would have considered looking at a different brand to purchase. The best way to get a gauge on this is to do research. Read reviews that include calibrations â€“ like those in Secrets of Home Theater and High Fidelity â€“ and make sure you read the calibration section where reviewers will often comment on how the calibration went. If they say itâ€™s really difficult, Iâ€™d look elsewhere.
Outside of calibration capabilities, I donâ€™t pay much to other features being offered. I personally have no interest in 3D â€“ I find it a gimmick at best, even in the most high-end implementations. Undoubtedly the next unit I purchase will be 3D capable, but I would be very surprised if it is ever used in my home.
Iâ€™m going to throw a bunch of things into what I call next generation features. Generally for these Iâ€™m thinking of aspects that are not mainstream yet, or that are still at a price point that they are prohibitive. While these arenâ€™t things that are on my immediate radar, they are things that I consider important enough advances that Iâ€™m paying close attention as they make their way to more purchase friendly levels.
Where does this light come from?
Like everyone, Iâ€™m currently paying attention to changes in the way light is generated in projectors â€“ namely LED based technologies. Our projectors are â€œagingâ€ from the minute we turn them on â€“ with bulbs decreasing in brightness a little with every use. The implementation of a technology that doesnâ€™t age at the same rate, avoiding costly bulb replacements, would be something that every projector owner should be paying attention to. Thus far, LED based projectors have carried very high price tags. At the same time, promises of infinite life are just those â€“ promises â€“ weâ€™ve yet to see these units actually perform in the wild long term to see how they stand-up to day to day use. Regardless, as LED technology advances and finds its way into more mainstream projectors, Iâ€™ll certainly be watching closely.
Constant Height...without all of those parts?
About 5 years ago, prior to the advent of 1080p, when projector manufacturers had little to tout in terms of technology advances, we saw an explosion in constant height set-ups. I have always toyed with the idea of going to a 1:2.35 screen, but several things have held me back. The two part systems (lens assembly/sled + projector) were not only very expensive, but also complex in their installation and execution. Top of the line video processing was needed to effectively stretch the image without adding any artifacts, adding to the cost. Lastly, even the best lenses can cut the light output of your projector and add unwanted artifacts to the image. On top of all of these considerations, my current room wasnâ€™t really configured to accept at 1:2.35 aspect screen. Still, being primarily a movie watcher, 1:2.35 screen was always at the back of my mind.
Last year at CEDIA we saw the release of a handful of projectors that dealt with several my chief apprehensions â€“ native ultra wide projectors. These units were all based on DLP technology, and contained chips whose native resolution was no longer 16:9, but rather fit with wide screen applications. These WQXGA projectors didnâ€™t need a two part system, and could natively fill a 1:2.35 screen without the aid of a lens (and its associated complications). As I have written in earlier sections of this feature, I have never been able to deal with DLP based projection systems because of my high sensitivity to color separation artifacts. However, I am hopeful that this approach becomes more widely accepted, finding its way into LCOS based projectors. When it does, Iâ€™ll be eyeing very close a conversion to a constant height set-up.