6am
Need some light to be shined on, this is the first time I have ever worked with projectors. I've come down to two great projectors, but both come with different technology: DLP and LCoS.
This is my scenario... I need the technology that will give me the brightest and sharpest picture for a large room (ie. conference rooms).
What is some pro's and con's for each technology, and which is best suitable for my situation?
MANY thanks in advance, I really appreciate it!
Answer
DLP (Digital Light Processing) and LCoS (Liquid Crystal on Silicon) are two popular, but as you recognize, quite different technologies for projectors. The third is LCD (Liquid Crystal Display). LCoS is best considered a special case of LCD with some distinct advantages.
I've included some links for further info, but basically the pros and cons of DLP, LCD and LCoS are as follows:
DLP can be made with a single or three DLP chip design (e.g. SIM2, Marantz). The single chip design (e.g. Optoma, Mitsubishi) is much less expensive ($1-3000 vs $10,000+). The single chip designs use a rotating wheel with various coloured transparent sections to generate a colour image. Modern DLP projectors have colour wheels that turn at what is called "5X" or more. Slower wheels can lead to "rainbow effect" (a visual disturbance) in susceptible viewers. Traditionally DLP projectors are known for their deep blacks and good dynamic range (although the advent of dynamic iris technology has led to LCD projectors exhibiting essentially equivalent results). Single ship DLP projectors are often less expensive than LCD and LCoS projectors partially because the latter require three panels not one, but also because the zoom range of the lens are (often) less and the projectors (often) lack vertical and horizontal offset capability (increases mounting flexibility).
LCD projectors (e.g. Panasonic, Sanyo, Epson) use three LCD panels (one for each colour) and therefore have no colour wheel. On the other hand, LCD projectors are less capable of extreme black (meaning slightly less "punch" to the image), a more visible pixel structure (called "screen door effect" and meaning you need to sit slightly further back to not see pixels), and more tendency to smearing with fast action.
LCoS projectors (e.g. JVC, Sony, Canon) are a variation on LCD technology (See links), with the primary benefit being no "screen door effect", excellent colour, but (as with LCD) risk of slow screen response and weaker black perfomance. That said a JVC LCoS projector is currently rated by several reviewers as the best under $10,000 projector.
I hasten to add that all pros and cons are "in general" since there are examples of specific models in each class that have overcome the "traditional" disadvantages of the technology. Therefore, your choice really shouldn't be based on the underlying technology, but on performance.
Since all projectors differ in their specific strengths and weaknesses and each fits certain needs better than others I strongly suggest defining your needs (e.g. room size, screen size, light conditions, type of programming, budget) and finding projectors that best meet these needs. The last two links provide a wealth of information to help.
DLP (Digital Light Processing) and LCoS (Liquid Crystal on Silicon) are two popular, but as you recognize, quite different technologies for projectors. The third is LCD (Liquid Crystal Display). LCoS is best considered a special case of LCD with some distinct advantages.
I've included some links for further info, but basically the pros and cons of DLP, LCD and LCoS are as follows:
DLP can be made with a single or three DLP chip design (e.g. SIM2, Marantz). The single chip design (e.g. Optoma, Mitsubishi) is much less expensive ($1-3000 vs $10,000+). The single chip designs use a rotating wheel with various coloured transparent sections to generate a colour image. Modern DLP projectors have colour wheels that turn at what is called "5X" or more. Slower wheels can lead to "rainbow effect" (a visual disturbance) in susceptible viewers. Traditionally DLP projectors are known for their deep blacks and good dynamic range (although the advent of dynamic iris technology has led to LCD projectors exhibiting essentially equivalent results). Single ship DLP projectors are often less expensive than LCD and LCoS projectors partially because the latter require three panels not one, but also because the zoom range of the lens are (often) less and the projectors (often) lack vertical and horizontal offset capability (increases mounting flexibility).
LCD projectors (e.g. Panasonic, Sanyo, Epson) use three LCD panels (one for each colour) and therefore have no colour wheel. On the other hand, LCD projectors are less capable of extreme black (meaning slightly less "punch" to the image), a more visible pixel structure (called "screen door effect" and meaning you need to sit slightly further back to not see pixels), and more tendency to smearing with fast action.
LCoS projectors (e.g. JVC, Sony, Canon) are a variation on LCD technology (See links), with the primary benefit being no "screen door effect", excellent colour, but (as with LCD) risk of slow screen response and weaker black perfomance. That said a JVC LCoS projector is currently rated by several reviewers as the best under $10,000 projector.
I hasten to add that all pros and cons are "in general" since there are examples of specific models in each class that have overcome the "traditional" disadvantages of the technology. Therefore, your choice really shouldn't be based on the underlying technology, but on performance.
Since all projectors differ in their specific strengths and weaknesses and each fits certain needs better than others I strongly suggest defining your needs (e.g. room size, screen size, light conditions, type of programming, budget) and finding projectors that best meet these needs. The last two links provide a wealth of information to help.
Has anyone ever used Volare HD 20k projectors?
Jay
I am thinking about buying one, yet there are absolutely no reviews that I can find and every single one for sale on eBay or otherwise claims that they are brand new. It just seems too good to be true.
Answer
It is too good to be true.... and that's not a good thing.
Some of the worst I have seen are cobbled together in Chinese factories from parts that aren't normally used for projectors. The picture is made by shining a light through a 5" LCD TFT screen that would normally be used as an in-car headrest display. The light comes from the sort of lamp fitted to an outdoor security light. It's hardly the pinnacle of video projector technology.
The Volare HD 20K claims to be a "professional home theater projector" with an RRP of $4,995 and 20,000 lumen (extremely bright) light output. There's no way on Gods green earth and never in a million years it can live up to those claims. I could go in to technical details about why their claims are bogus. But instead I'll just say that as someone who has been selling and installing projectors for almost 25 years my advice to you is to leave the Volare alone. It's a real lemon.
If you want a laugh though go have a read of their user manual for this supposedly $5000 projector..... Page one gives us "Installlation" spelled with 3 L's and the hits just keep on coming.
http://volarevideo.com/hd-20k.html
If you want a decent proper home cinema projector then had a look at the Optoma HD66 or the Optoma GT750 if you're more in to gaming general TV/sports viewing.
It is too good to be true.... and that's not a good thing.
Some of the worst I have seen are cobbled together in Chinese factories from parts that aren't normally used for projectors. The picture is made by shining a light through a 5" LCD TFT screen that would normally be used as an in-car headrest display. The light comes from the sort of lamp fitted to an outdoor security light. It's hardly the pinnacle of video projector technology.
The Volare HD 20K claims to be a "professional home theater projector" with an RRP of $4,995 and 20,000 lumen (extremely bright) light output. There's no way on Gods green earth and never in a million years it can live up to those claims. I could go in to technical details about why their claims are bogus. But instead I'll just say that as someone who has been selling and installing projectors for almost 25 years my advice to you is to leave the Volare alone. It's a real lemon.
If you want a laugh though go have a read of their user manual for this supposedly $5000 projector..... Page one gives us "Installlation" spelled with 3 L's and the hits just keep on coming.
http://volarevideo.com/hd-20k.html
If you want a decent proper home cinema projector then had a look at the Optoma HD66 or the Optoma GT750 if you're more in to gaming general TV/sports viewing.
Powered by Yahoo! Answers
Title Post: DLP vs LCoS Projectors?
Rating: 100% based on 99998 ratings. 5 user reviews.
Author: Unknown
Thank FOr Coming TO My Blog
Rating: 100% based on 99998 ratings. 5 user reviews.
Author: Unknown
Thank FOr Coming TO My Blog
No comments:
Post a Comment