Dancing with the beamer and the camera :: The color wheel “rainbow effect”
Some cool DLP Projector images:
Dancing with the beamer and the camera :: The color wheel “rainbow effect”
Image by Rosa Menkman
DLP projectors utilizing a mechanical spinning color wheel may exhibit an anomaly known as the “rainbow effect.” This is best described as brief flashes of perceived red, blue, and green "shadows" observed most often when the projected content features high contrast areas of moving bright/white objects on a mostly dark/black background. The scrolling end credits of many movies are a common example, and also in animations where moving objects are surrounded by a thick black outline. Brief visible separation of the colours can also be apparent when the viewer moves their eyes quickly across the projected image. Some people perceive these rainbow artifacts frequently, while others may never see them at all.
en.wikipedia.org/wiki/Rainbow_effect#The_color_wheel_.22r…
Digital Light Projection
Image by jigpu
My sister has a DLP projector over at her place, and one of the things I quickly found out was this shimmering rainbow effect. Apparently most DLP systems make use of a white-light lamp which is then filtered through a colorwheel to alternatively project the R, G, and B components of a picture. Because they’re spaced in time, waving an object quickly enough in front of the lens (like say, your hand 
) will reveal a rainbow-like effect as its lit by each color.
Epson DC-06 Document Camera – Document camera – color – USB – ELPDC06 DOC CAM MAC COMPATIBLE XGA 1024X768
Epson DC-06 Document Camera – Document camera – color – USB – ELPDC06 DOC CAM MAC COMPATIBLE XGA 1024X768
ELPDC06 DOC CAM MAC COMPATIBLE XGA 1024X768
Incorporating Epsons advanced technologies, the Epson ELP DC-06 is a compact and affordable desktop solution for enlarging the source materials you can display while drastically cutting preparation time. The Epson ELP DC-06 visualizer only takes seconds to set up. You can connect directly to the new Epson EB-8 projector series and future Epson projectors thanks to the direct USB connection and two-in-one cable. It also lets you work via a computer. Just plug in, unfold the arm and youre ready to focus. Visual quality is guaranteed with 2 million pixel resolution and powerful zoom allowing you to focus on details. The camera can be turned 90 in different axis and the height adjusted, so you can even capture 3D objects, or an entire board. The Epson ELP DC-06 visualizer does not need a separate power supply, making it very compact. It is light, and the arm folds down neatly into the base making it easy to carry. With power consumption of less than 2.5W it meets modern ecological standards.
Price: $ 497.30
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Categories: 1080p Ceiling Projectors Tags: 1024x768, camera, Color, compatible, DC06, Document, ELPDC06, Epson
Nikon Coolpix S1100pj 14 MP Digital Camera with 5x Wide Angle Optical Vibration Reduction (VR) Zoom and 3-Inch LCD and Built-in Projector (Silver) Reviews
Nikon Coolpix S1100pj 14 MP Digital Camera with 5x Wide Angle Optical Vibration Reduction (VR) Zoom and 3-Inch LCD and Built-in Projector (Silver)
- Incredible built-in projector; 14.1-megapixel CCD sensor
- 5x wide-angle optical Zoom-Nikkor glass lens
- 3-inch touch-screen display; 5-way VR Image Stabilization system
- HD (720p)movie recording with One-Touch control button
- Capture images and video to SD/SDHC memory card (not included)
For sharper images, the S1100pj has a 5-Way VR stabilization system that combines multiple technologies to smooth the bumps when shooting under low light conditions or in situations where you can't use flash. For spectacular portraits, Nikon's Smart Portrait System offers Skin Softening filters (3 levels of adjustment), in-camera Red-Eye Reduction, Face-Priority AF, D-Lighting, a Smile Timer takes the picture only when your subject smiles, and Blink Proof, which automatically takes two quick shots and saves the one with eyes open.
Other outstanding features include Quick Retouch, which works with the D-Lighting function to optimize shadow and highlight detail, fisheye effect, selective color highlighting on an otherwise monochrome picture, and background softening, 17 scene modes, and macro shooting down to 1.2" from the front lens element.
Categories: Digital Ceiling Projectors Tags: 3Inch, angle, BuiltIn, camera, Coolpix, Digital, Nikon, Optical, Projector, Reduction, Reviews, S1100pj, Silver, Vibration, Wide, Zoom
Nikon Coolpix S1100pj 14 MP Digital Camera with 5x Wide Angle Optical Vibration Reduction (VR) Zoom and 3-Inch LCD and Built-in Projector (Black)
Nikon Coolpix S1100pj 14 MP Digital Camera with 5x Wide Angle Optical Vibration Reduction (VR) Zoom and 3-Inch LCD and Built-in Projector (Black)
- Incredible built-in projector; 14.1-megapixel CCD sensor
- 5x wide-angle optical Zoom-Nikkor glass lens
- 3-inch touch-screen display; 5-way VR Image Stabilization system
- HD (720p)movie recording with One-Touch control button
- Capture images and video to SD/SDHC memory card (not included)
Sharing photos and videos doesnt get more immediate, or simple, than with the Nikon S1100PJs built-in projector. Show the shots you take with your 14.1-megapixel camera, or the movies you film in HD, at up to a 47 projection that can be used on any flat surface. Hybrid optical and electronic image stabilization keep blur from creeping in, and a 5x optical zoom lets you get things framed just right. Easy-Auto mode and a Smart Portrait system make sure that you can concentrate on taking pictures, rather than on adjusting settings, while a 3.0 touch LCD viewscreen makes previewing and editing images easy on the eyes.
List Price: $ 349.00
Price: $ 349.00
Nikon COOLPIX S1200pj Black 14MP Digital Camera w/ Projector | US $364.95 End Date: Wednesday Feb-08-2012 12:38:00 PST Buy It Now for only: US $364.95 Buy it now | Add to watch list |
 | US $149.00 (0 Bid) End Date: Wednesday Feb-08-2012 13:43:35 PST Buy It Now for only: US $199.00 Bid now | Buy it now | Add to watch list |
Categories: Digital Ceiling Projectors Tags: 3Inch, angle, Black, BuiltIn, camera, Coolpix, Digital, Nikon, Optical, Projector, Reduction, S1100pj, Vibration, Wide, Zoom
Nikon Coolpix S1000pj 12.1MP Digital Camera with Built-in Projector and 5x Wide-Angle Optical Vibration Reduction (VR) Zoom
Nikon Coolpix S1000pj 12.1MP Digital Camera with Built-in Projector and 5x Wide-Angle Optical Vibration Reduction (VR) Zoom
- 12.1-megapixel resolution for stunning prints as large as 16 x 20 inches
- World’s first camera with an ultra-small, built-in projector provides new ways for enjoying your pictures anytime and anywhere
- 5x wide-angle Zoom-NIKKOR glass lens; 5-way VR image stabilization system
- Bright 2.7-inch high-resolution LCD; Scene Auto Selector and Smart Portrait System
- Capture images to SD/SDHC memory cards (not included)
Nikon Coolpix S1000pj 12.1MP Digital Camera with Built-in Projector and 5x Wide-Angle Optical Vibration Reduction (VR) Zoom – 26186
List Price: $ 349.95
Price: $ 349.95
Panasonic Digital Multimedia LCD Projector PT-L720U | US $495.55 End Date: Wednesday Feb-08-2012 5:34:29 PST Buy It Now for only: US $495.55 Buy it now | Add to watch list |
 | US $2,144.53 End Date: Wednesday Feb-08-2012 7:31:53 PST Buy It Now for only: US $2,144.53 Buy it now | Add to watch list |
Categories: Digital Ceiling Projectors Tags: 12.1MP, BuiltIn, camera, Coolpix, Digital, Nikon, Optical, Projector, Reduction, S1000pj, Vibration, WideAngle, Zoom
Rough And Ready: Toshiba Debuts 2MP Network Dome Camera IP66-Rated For Outdoor Installation
Rough And Ready: Toshiba Debuts 2MP Network Dome Camera IP66-Rated For Outdoor Installation
Toshiba Surveillance & IP Video, a business unit of Toshiba America Information Systems, Inc., recently debuted the IK-WR12A, a two-megapixel IP network dome camera featuring an IP66-rated housing that safeguards it from both extreme weather conditions and vandalism.
Read more on RetailSolutionsOnline
Categories: Digital Ceiling Projectors Tags: camera, debuts, Dome, Installation, IP66Rated, Network, Outdoor, Ready, Rough, Toshiba
What movie camera should I buy for school plays and does the Epson Movie Mate Projector come with sound?
I wish to take videos of the school play practice and play it for the kids to improve their acting skills. What is a good video camera for this use and what projector should I use with it?
Categories: Epson Ceiling projectors Tags: camera, come, Epson, Mate, Movie, plays, Projector, School, should, Sound
Epson Announces DC-11 Document Camera with Outstanding Image Quality, Performance and Versatile Teaching Tools
Epson Announces DC-11 Document Camera with Outstanding Image Quality, Performance and Versatile Teaching Tools
DENVER, June 28 /PRNewswire-FirstCall/ — (ISTE, Booth 1846) Epson America today announced the Epson DC-11 document camera, designed to help K-12 classrooms promote a dynamic learning environment.
Read more on redOrbit
Categories: Digital Ceiling Projectors Tags: Announces, camera, DC11, Document, Epson, Image, Outstanding, Performance, Quality, Teaching, Tools, Versatile
Want to connect my Sony video camera to my Viewsonic video projector……?
I have a Sony video camera and would like to hook it up to my viewsonic video projector. The reason is that I would like to set this up is because I’m trying to record an event and at the same time show it on my projector screen. IS THIS POSSIBLE?