A projector or image projector is an optical device that projects an image (or moving images) onto a surface, commonly a projection screen. read more at WikiPedia

  • I am reading many forums since 2 weeks (home,, and reviews to better understand how to choose the right screen for my Panasonic PT900-AE. I am more or less installed in my new apartment, but in order to profit of the biggest room (6.4m * 3.6m), I have to use a wall with either windows or a door in the middle. Time to shop for a screen instead of using the white wall...

    A lot of companies are selling screens, and if You do not take care, You'll end up very quickly with a 200euro screens, which are per see not bad, but really not adapted for home cinema.
    You will find a lot of tutorials and guide on the Internet helping You choosing the right screens. Stewart being the Rolls-Royce brand of screens (but it start at 8000CHF)

    The 3 major parameters are:
    1. Screen Gain : The ability of a screen to direct incident light to an audience. A flat matte white wall has the gain of approximately 1. Screens with a gain less than 1 attenuate incident light; screens with gain more than 1 direct more incident light to the audience but have a narrow viewing angle. For example: an image reflecting off a 10 gain screen appears 10 times brighter than it would if reflected off a matte white wall. Curved screens usually have larger gain than flat screens.
    2. Viewing Angle:Screens do not reflect equally in all directions. Most light is reflected in a conical volume centered around the "line of best viewing". Maximum brightness is perceived if you are within the viewing cone defined by the horizontal and vertical viewing angles.
    3. Your budget: we can not all buy a Stewart Firehawk (anyway it is optimized for DLP not LCD).

    The presence of black band to hide eventual artifacts created by the projector (but it can be solve by software), the transparency of the screens is also important....
    At the end, I was reading user experience of cheap screens which develop waves after a period of time,  mechanical mechanism problems and so on...I was able to retains 3  models:
    At the end, I was reading user experience of cheap screens which develop waves after a period of time,  mechanical mechanism problems and so on...I was able to retains 3  models:

    Da-Lite Model C A mechanical DaLite, Da-Lite Model C "CSR" 16:9  198x353cm - manual
    which should be the best screen quality of all 2 screens below (screen material only).

    The Model C™ with CSR is a manual wall or ceiling mounted screen with Da-Lite's Controlled Screen Return (CSR).
    CSR is a feature offered exclusively by Da-Lite to assist in the quiet controlled return of the screen into the case.
    Exclusiv home has a tensioned system (seems to be the latest development for avoiding waves in the middle of the screen and still having a rolling screen: the best of the 2 world)

    It has also SOMFY motor, IR remote controller and a price tag of 1980CHF or 1300 euro. It uses  a vinyl screen of gain 1.0.

    In fact it is a screen build by Grandview (Grandview Crystal Screen Co of Canada) 
    They are originally out of China and they have decided to add a supply warehouse in Canada. Sariaa is having the same model here:

    All 3 Brand sell the SAME model, so do not loose time to look at characteristics and choose the one which is cheaper.

    The last option is the DIY (Do It Yourself), and voila a good link if you have a wall big enough:

  • TIDLP I've probably found my next projector, if only price is right...

    Texas Instruments DLP&174; Products Demonstrates Innovation Leadership with New Prototypes Including Lamp-Free
    Projector DLP unveils the world's first 3-D Front Projector and shows the first DLP Pico chipset product

    Texas Instruments at InfoComm DLP&174; Products introduced the industry's first home theater lamp-free projector
    that utilizes a PhlatLight&8482; LED light source and a BrilliantColor&8482; chipset. This technology demo delivers a superior
    1080p picture for which DLP technology is known, while eliminating maintenance costs such as lamp replacements
    and filter changes required by some competing projector products. Multiple DLP customers have plans to develop
    DLP lamp-free LED-based projectors, including Optoma, with units expected to ship in late 2008. Similar to the
    deployment of DLP Product's now popular BrilliantColor technology, the solid-state, lamp-free innovation will first
    be incorporated into home theater units and proliferate through corporate and education product lines thereafter.

    Benefits of Lamp-free projectors

    • LED are coming from Luminus (120'000 hours lifetime or 13 years!),
    • With DLP chipset, more light can reach the screen resulting in a 50% increase in color gamut range producing more
      than 200 trillion colors!
    • Contrast ratio expected in excess of 500,000:1.
    • 30% lower power usage
    • No cooling&160; or FAN, no dust and cleaning required
    • hundreds of euro in savings from lamp purchases.

    Visit and

  • tuxdroid.teamcity

    I did refresh the tuxdroid teamcity plugin project a bit on request to Jasper Moltke Nygaard (Danmark )

    TeamCity is a Java-based build management and continuous integration server from JetBrains, creators of IntelliJ IDEA and ReSharper

    With this plugin you can notify your Tux Droid with your TeamCity build results. After login you can find the new notificator Tux Droid in your notification settings. You need your Tux Droid server IP and port to connect your Tux to TeamCity. After you have saved the parameters you can configure your individual notification settings for just all projects/specific projects/build failures/... Each registered User can customize Tux Droid messages or choose different Attitunes.

    Attitunes are

    robot animations you can create combining movement, sound, Text-To-Speech and fun. Make Tux Droid sing 'Dancing in the rain' or make him cry when you didn't receive any new E-mail.

    The new version is now 0.0.2-SNAPSHOT, and I am able to support both TeamCity 4.x and TeamCity 5.x

    Visit the site to grab the latest version

    This project is Open Source (GPL V3.0) and the source code is available at Google Code, you can join the project by contacting me

    You can read the online documentation in my WIKI

    The Teamcity builds (latest trunk) are also available as artifacts in my public Teamcity server (No login required).

  • Below are some pictures of my first home cinema setup

    1. The flat LCD TV is a samsung LE61B 32 inch (82cm), located below on pictures
    2. The projector is a Panasonic PT900AE, 720pp, light in ECO mode and I use a normal white wall.

    Windows desktop
    (simulator run only under windows)

    Simulator in fullscreen!!!

    Appreciate the difference of size.....And here How the projector is attached to the wall:

    • Big but cheap (45euro), a Panasonic fixation cost 560CHF
    • A lot of space bellow, for a XBOX360, a PS3, a dreambox or linux mediacenter...(planned)

    Note: The picture quality do not reflect the terrific colors and quality of this projector. (Camera Sony DSC700 2.1MP 1998)

  • It's Christmas today!!!! (Part 2)

    You want to read some reviews on the PT900, the best place is at in the Panasonic PT900 section. I have watch till now only 2 DVD with it, base of image: 2 meters (I have fixed nothing, I expect something like 3.5 when installed), I've use it in low power mode: astonishing images!!!!!

    • Description: 16:9 LCD Home cinema
    • Technology: 3x LCD
    • Resolution: 1280 x 720
    • Aspect ratio: 16:9, or  4:3
    • Picture brightness: 1100 Ansi Lumen
    • Contrast: 5000:1
    • Cooler sound: 26 (db im Normalmodus)
    • Distance: 1,2 bis 7,4 (m)
    • Features: Lens Shift, Trapezoidal correction, Smooth Screen Technologie, Prog. Cinema Scan
    • Connections: HDMI, YUV, VGA, Scart, S-Video,
    • Video Lamp: 3.000 hours
    • Measures: 33,5x10,4x27 (cm)
    • Weight: 3.6 kg

    • 1,920 x 1,080 full-HD panels with perpendicularly aligned liquid crystals
    • Outstanding 11,000:1 contrast ratio - highest in its class *1
    • Lumens brightness rating of 1100.
    • Newly developed lens system with original aspherical lenses
    • Pure Colour Filter adjusted to professional specifications for rich, deep blacks and vivid colours
    • 14-bit gamma processing original LSI
    • HD-optimized Dynamic Iris Lens with new algorithm
    • Waveform monitor function
    • HD-optimized Smooth Screen
    • Cinema Colour Management
    • Progressive Cinema Scan (3/2 pull-down)
    • Scene-adaptive MPEG noise reduction
    • Lens-centred symmetrical design
    • 2x powered optical zoom and powered focus
    • Learning Remote Control
    • Two HDMI Inputs
    Price Tag: $3500
  • With 2499$ MRP, 60000:1 contrast ratio - this projector is going to set a new trend in 1080p projector market. For all of you still looking for good reasons to buy it or not, has put an interesting review online


    My current projector (PT900AE) is still working after 2122 hours... hope it will last till the AE3000 reach Switzerland.

    An interesting thread at AVS forums, and the specifications are available as PDF HERE

  • to be continued

  • The PT-AX100U is the successor of the preceding model PT900AE- this new projector comes with better initial calibration, better benchmark scores and an improved lamp with plenty of lumen output.  (2000 Lumens!). Beside this I have 900 hours usage on my PT900AE in less than 6 months.
    You can find some of the best reviews below:
  • panasonic_PT-AE3000

    it look like that I have found my next projector...except if Sanyo come with a better offering for less than 2000 CHF of course :-) or do not give a positive review (that I doubt)

    PT-AE900 720p projector is now 3 years old and has more than 1980 hours lamp usage (on a max 3000 hours)...


    New PT-AE3000 Provides A Bright and Dynamic Wide screen Home Viewing Experience with Crisp Motion Images Via Frame Creation Technology
    DENVER – CEDIA Expo – Sept. 3, 2008 – Panasonic Projector Systems Company, Unit of Panasonic Corporation of North America, announced today the debut of its newest LCD home theater projector, the PT-AE3000. With full high-definition 1080p (1,920 x 1,080 pixel) native resolution, the PT-AE3000 gives home theater enthusiasts a higher level of picture quality entertainment, producing crisp and clear images through new state-of-the-art projection technology.
    As an evolution of its award winning predecessor, the PT-AE2000, the PT-AE3000 delivers a captivating 1,600 lumen brightness and powerful 60,000:1 contrast ratio. To achieve sharp and detailed reproduction of fast moving motion images, Panasonic has developed and equipped the PT-AE3000 with new Frame Creation Technology optimized for large screen viewing. And for easy adjustment to different widescreen movie formats like 21:9 or 16:9, the projector is also upgraded with a Lens Memory Load feature which is capable of memorizing and restoring zoom/focus positions for multiple aspect ratio flexibility.
    Higher Picture Quality with Brightness Upgrade
    The dramatic increase in the contrast-ratio and dynamic range was made possible by the newly engineered Pure Contrast Plate technology that effectively blocks unwanted light from the path of projection. In addition, the polarization filter system surrounding the Pure Contrast Plates has been redesigned to achieve the PT-AE3000's higher level of brightness.
    Together with a host of carefully engineered Panasonic technologies including the high precision optical lens unit, Dynamic Iris and Smooth Screen technology, the PT-AE3000 truly distinguishes itself against its competition and as a projector solution that home theater enthusiasts will thoroughly enjoy.
    Crisp and Clear Details for In-Motion Images
    The PT-AE3000 now incorporates a Frame Creation technology that interpolates an additional frame by analyzing the characteristics of two adjacent frames, creating sharp and clear images of fast moving scenes in sports and action movies, especially for large screen viewing. For crisp motion images with high resolution, users may set their frame count preference to 120 frames/1 sec from 60 frames/1 sec for 60Hz video signal input, while 24frames/sec (24p) signals are quadrupled to 96frames/1sec by interpolating three additional frames to allow natural frame-to-frame transitions.
    The new and advanced Detail Clarity Processor V2.0 allows the projectors' digital processing engine to extract information of the low, mid, high, and even the super-high frequency components. The ability to apply these different degrees of sharpness permits the PT-AE3000 to reproduce natural, lifelike images with exceptional clarity and three-dimensionality to the smallest details.
    The PT-AE3000 comes equipped with professional-level features that let users personalize the images they see on the screen. First, the projector's Split Adjust mode allows users to split the screen into two halves; one to make picture adjustments and one to see those adjustments as a baseline reference. Second, the PT-AE3000's waveform monitor-seen mostly on professional video and film equipment-measures the level of brightness output from a given video signal source. This feature also automatically verifies that the source device is outputting at full dynamic range, and quickly makes adjustments to optimize it for the home theater setting. Users can easily see a graphical representation of any changes made to the unit's color settings.
    Ease of Set-up and Use
    Many movies come in aspects that are even wider than the projector's 16:9 aspect ratio to match the image size 21:9 seen at movie theaters. More and more projector customers are using the 21:9 wide screens to mirror the movie theater experience. The PT-AE3000 enables users to pre-set three different zoom/focus positions and enables easy recall of those positions with the Lens Memory Load function.
    Initial set-up and installation are quick and simple, as the 2.0x zoom can cast a 120-inch diagonal image from as short as 3.6 meters (about 11 feet) to 7 meters (24 feet) from the screen. The projector's lens shift capability enables 100 percent vertical adjustment and 40 percent horizontal adjustment so that viewers can suspend the projector either close to the ceiling or on wall mounts. The lens-centered design and maintenance features such as the replaceable side filter and top lamp, make the projector easy to install and maintain.
    The projector is also equipped with an abundant selection of connections; including three HDMI 1.3 inputs and two component input terminals. The three HDMI 1.3 inputs are all Deep Color and x.v.Color compliant. The Deep Color supports 10 bit (over 1.07 billion) and 12 bit (over 68.7 billion) color depths for smooth tonal transitions and subtle gradations between colors, while the x.v.Color compliance realizes accurate reproduction of actual, true-to-life images.
    Eco-Friendly Intelligence
    In addition to its outstanding features, the new PT-AE3000 is also an ecologically conscious product. The intelligent power management system within the projector reduces the lamp power to the exact required level of brightness depending on what content is displayed. Other than in scenes where full brightness is required, the lamp intelligently determines the necessary power output by analyzing more than 3 billion different image patterns. This advanced analysis process reduces the main power consumption by as much as 10 percent when the dynamic iris function is in operation, thus saving energy.
    Other ecological considerations include an off-timer that reduces wasteful power consumption, as well as an extremely low standby power consumption of 0.08 W[1], which is the lowest in its class.[2]
    The Panasonic PT-AE3000 LCD home theater projector will be made in Japan, available starting in October 2008 to authorized presentation systems dealers with an MSRP of $3,499.
    To learn more about this projector, please visit  or

  • I've just ordered my first home cinema projector: The Sony Hs50 (or Hs51 in USA because it has an ethernet connector more)

    Brightness (Lumens) : 1200 ANSI
    Contrast: ANSI:
    Full On/Off: 6000:1
    Weight: 5.7 kg
    Size (cm) (HxWxD) : 13.6 x 34.9 x 35.9
    Throw Dist (m) : 1.8 - 5.8
    Image Size (cm) : 101.6 - 508.0
    Lens: Focus:
    Zoom: Manual, 1.55:1
    Optional Lenses: No
    Digital Zoom:      **
    Keystone Correction: Fixed
    Lens Shift: H+V
    Compatibility: HDTV:
    1080p, 1080i, 720p
    EDTV/480p: Yes
    SDTV/480i: Yes
    Component Video: Yes
    Video: Yes
    Digital Input: HDMI (HDCP)
    Personal Computers: Yes
    Networking: Wired:

    Warranty: 2 Years
    Lamp: Type:
    135W UHP
    Life: 2000 hours
    Eco-Mode Life: 3000 hours
    Quantity: 1
    Display: Type:
    0.7" PolySi LCD (3)
    Native: 1280x720 Pixels
    Maximum: 1280x768 Pixels
    Aspect Ratio: 16:9 (WXGA)
    H-Sync Range: 19.0 - 72.0kHz
    V-Sync Range: 48 - 92Hz
    Pixel Clock:      **
    Speakers:      **
    Max Power: 195W
    Voltage: 100V - 240V
    FCC Class: B
    Audible Noise: 24.0 dB


    I will list below the Best review of  projector screens I've found, beside this it is really depressive to see Google only being able to return all these online shops with nothing interesting instead of good reviews articles like these:
    1. White, Grey, or Silver - A Review Welcome to my third screen review. This review will demonstrate three professionally manufactured materials that are White, Grey, and Silver. I hope to demonstrate the differences of what these different screen colorations can offer and how you may benefit.
    2. A Screen Showcase & DIY Review Welcome to my second screen review. This review will include lower gain screen materials, what they do, and what they are made of. I see this as a benefit to people because screen surfaces and materials remain a mystery to most. It will include some DIY materials but must be somewhat limited as there are literally thousands of materials to bounce light off of. So, of course, they cannot all be covered here. Finally, at the end, there will be a fun little shootout between some DIY materials and the infamous Stewart Firehawk. 
    3. The High-Gain/Exotic Screen Review  After critically looking at these screens for over 5 days and taking over 200 pictures I must say this was one hard review. There are so many variables, they cannot all be covered here. In the end, it is important to try to achieve the greatest benefit for the environment or viewing you want to achieve. This review will focus on 5 high power screens surfaces and will include 3 lower power for reference only.
    4. to be continued...