Tags
Categories
Meta
Archives
- February 2011
- January 2011
- October 2010
- September 2010
- May 2010
- February 2010
- January 2010
- December 2009
- November 2009
- October 2009
- September 2009
- August 2009
- July 2009
- June 2009
- May 2009
- April 2009
- March 2009
- February 2009
- January 2009
- December 2008
- November 2008
- October 2008
Meta
Green Diffused
25th February 2010
Chroma key is one of the most popular digital video editing effects.
Using chroma key, you can make virtually ANYTHING happen in your digital video.
Want your video to take place on the other side of the universe? Chroma key is the video editing technique that can take you there in seconds, for nothing.
Chroma key is commonly called green screen. Most people are familiar with the term green screen. That’s where your on-camera talent stands in front of a bright lime green background. Then, through editing, all the lime green is removed from the shot and another image is inserted in its place.
Green screen is the common term, but technically, chroma key is more accurate. Chroma key can use any color, not just green. All it takes is the right equipment to handle the different colors. That flexibility can make life much easier.
Lime green and bright turquoise blue are most often used for chroma key effect because they are opposite on the color spectrum from facial tones. Because it is opposite, the digital removal of one color won’t affect the other. This would be why you never see a weather guesser wearing a lime green dress.
WHAT ABOUT LIGHTING?
In order to make your final chroma key effect look right, you have to shoot it with VERY BRIGHT, DIFFUSED LIGHT. You do not want shadows when shooting something for chroma key. Shadows in the back ground alter the color of your background by making it darker or lighter in spots. To do an effective chroma key, you have to have a VERY CONSISTENT COLOR for your background. Remember, this is the color that will be digitally removed. Any slight variations in the color will affect how well you can remove it and replace it with another image.
During editing, apply the green screen filter to your shot of your on-camera person. The filter is not needed on the image that you will key in.
Then, play with details of the filter, including the tolerance level, the edge thickness and the edge softness. By adjusting these levels individually you will get the chroma key effect to look as good as possible.
Large objects chroma key more easily than tiny ones. Tiny, thin objects are likely to disappear with chroma key. Sometimes you can you this to your advantage and leave a slight edge around thin objects. This can look very nice and if you soften the edge, it will look like a faint glow.
HOW FAR AWAY SHOULD THE ON-CAMERA TALENT BE FROM YOUR GREEN BACKGROUND?
The distance between your on-camera person and the background is not that critical. The important thing is that you do not have shadows on your background. So if your on-camera talent is so close to the background that he is casting a shadow, then add some more distance to eliminate that shadow. But if your light is diffused enough to be shadowless, then you can have your talent very close and it will key just fine.
There you have it, the basics of green screen for video production, which is also called chroma key.
Lorraine Grula has been a well-respected award winning video professional for over twenty-five years. (Yeah, that makes her kind of old.) Lorraine has done virtually every kind of video production imaginable and now shares her expertise on the web. Her blog, http://www.VideoProductionTips.com is full of free information and video tutorials.
|
|
LED T1 3mm GREEN LEDs Diffused ( Qty 300 ) *** NEW *** $12.99 |
|
|
5 mm Red/Green Diffused LED’s 3 Lead Common Cathode $2.00 |
|
|
20 Green 5mm Diffused Green Lens LEDs $0.99 |
|
|
2 mm Red/Green 2 Lead Diffused LED Pack of 100 $18.50 |
|
|
100x 5x5x7mm Green LEDs Lamp Light Green Diffused Lens $8.64 |
|
|
500x 5x5x7mm Green LEDs Lamp Light Green Diffused Lens $35.66 |
|
|
200x 2x5x7mm Green LEDs Lamp Light Green Diffused Lens $14.04 |
|
|
500x 2x5x7mm Green LEDs Lamp Light Green Diffused Lens $31.33 |
|
|
100x 2x5x7mm Green LEDs Lamp Light Green Diffused Lens $7.55 |
|
|
1000x 2x5x7mm Green LEDs Lamp Light Green Diffused Lens $54.03 |
|
|
200x 5x5x7mm Green LEDs Lamp Light Green Diffused Lens $16.20 |
|
|
1000x 5x5x7mm Green LEDs Lamp Light Green Diffused Lens $63.76 |
|
|
20 Green 3mm Green Lens Diffused LEDs Free Resistor $0.99 |
|
|
50pcs 3MM GREEN SUPER BRIGHT DIFFUSED LED Free RESISTOR $10.99 |
|
|
20 Green 2x5x7mm Diffused White Lens LEDs $0.99 |
|
|
20 Green 2x5x7mm Green Lens Diffused LEDs $0.99 |
|
|
250pcs green 8mm diffused led $24.73 |
|
|
100pcs 3mm Green Round Diffused LEDs LED 2 pins NEW $5.39 |
|
|
1000pcs 5mm Green Round LEDs LED 2 pins NEW DIFFUSED $29.99 |
|
|
50pcs 8mm green diffused led lamp Free Resistor $9.99 |
|
|
10pcs x 5MM RED YELLOW Blue Green White diffused led $9.99 |
|
|
100 3mm Green Diffused LED 4k MCD Bulb Lowest Price $5.99 |
|
|
100 10mm Green Diffused LED 10K MCD Bulb Free Tax $4.99 |
|
|
50pcs *3mm round diffused green LED LEDS $0.99 |
|
|
50pcs *5mm round diffused green LED LEDS $0.99 |
|
|
20 LEDs 5mm Green Diffused Green Lens LED Bulb $0.99 |
|
|
20 LEDs Green 3mm Diffused Green Lens LED Light $0.99 |
|
|
20 LEDs Green 2x5x7mm Green Lens Rectangle Diffused LED $0.99 |
|
|
20 LEDs Green 2x5x7mm White Lens Diffused LEDs $0.99 |
|
|
5pcs, Flash Flashing Blinking Diffused GREEN LED,GGF5 $1.49 |
|
|
50 Pcs 5mm Round Diffused Ylw Green LED Emitting Diodes $4.43 |
|
|
1000pcs 3mm Green Round LEDs LED 2 pins NEW diffused $26.99 |
|
|
500,Super Bright 6000MCD 10mm Green Diffused LED,G10 $98.00 |
|
|
50,Super Bright 6000MCD 10mm Green Diffused DIY LED,G10 $14.99 |
|
|
5000,3mm Green Diffused Signal Led for Car Boat Bicycle $128.00 |
|
|
5000,5mm Green Diffused Signal Led + FREE Resistors 12v $138.00 |
|
|
5000,5mm Wired Lead 12V DC Green Diffused LED Light,5GG $725.00 |
|
|
10PC 12V DIFFUSED 5mm 12Kmcd Green LED for CAR,DIY 30°+ $7.19 |
|
|
20PC 12V DIFFUSED 5mm 12Kmcd Green LED for CAR,DIY 30°+ $9.89 |
|
|
50PC 12V DIFFUSED 5mm 12Kmcd Green LED for CAR,DIY 30°+ $23.39 |
|
|
100PC 12V DIFFUSED 5mm 12Kmcd Green LED CAR,PC,DIY 30°+ $45.89 |
|
|
2pk – 10mm Diffused Green LEDS $1.00 |
|
|
50 Pcs 5mm Round Diffused Ylw Green LED Emitting Diodes $7.68 |
|
|
PETITE! DIFFUSED GREEN TOPAZ EARRINGS~STERL SILVER~3MM $8.50 |
|
|
20x 5mm Green Diffused Green Lens LEDs Bulb $0.99 |
|
|
20x 3mm Green Diffused Green Lens LEDs Light $0.99 |
|
|
500pcs,5mm Bi-Color Bi-Polar Red/Green Diffused Led,RGF $34.80 |
|
|
100pcs 2x5x7mm Green Diffused LED DIY HIFI $4.99 |
|
|
Green Diffused 3mm Standard LED 15mcd (10) 2EQPPN $2.99 |
|
|
Green Diffused 3mm Standard LED 5mcd (Lot of 10) 2ELAVV $2.99 |
|
|
microtivity 5mm Diffused Pure Green LED (Pack of 25) $5.79 These light-emitting diodes work well for a wide variety of applications. Packaged in a resealable zip lock bag for your ease of use…. |
|
|
microtivity 5mm Assorted Diffused LED w/ Resistors (5 Colors, Pack of 50) $9.99 Contains 10 Diffused Reds, 10 Diffused Yellows, 10 Diffused Greens, 10 Diffused Blues and 10 Diffused Whites. These light-emitting diodes work well for a wide variety of applications including Arduino projects. Comes with some resistors for connection. Forward Voltages are Red and Yellow 1.9-2.0V, Green: 3.0-3.2V, Blue: 3.0-3.1V and White: 3.0-3.2V. Packaged in a resealable zip lock bag for your e… |
|
|
Lastolite LL LS2462M2 Ezybox M2 Hotshoe Kit (24-Inch X 24-Inch) $154.90 The EzyBox Hotshoe converts your battery operated flash gun from a harsh directional light into a much softer diffused light. The EzyBox Hotshoe folds flat for easy storage and can be assembled in a matter of minutes. There are also a number of accessories available including an extending handle, a tilthead bracket and a powerful clamp with brass spigot. Ezybox Hotshoe 15 x 15 M2… |
|
|
Polaoird Universal Gel Soft Box Diffuser (Includes Blue, Red, Green, Amber, Yellow & Pink Gels) For Canon EOS, Nikon, Olympus, Pentax, Sony, Sigma, & Other External Flash Units $12.99 The Polaroid Universal Gel Soft Box Diffuser alters the harsh, highly focused light produced by a cameras flash unit and disperses it across the scene. The result is shadow reduction on people’s faces and shadows that appear on the wall behind the subject. The softer, diffused light enhances the skins overall appearance. Use the six colored gels to add colorfull effects to your pictures. Add them … |
|
|
Green Diffused Bright Aluminum 5/16 dia LED’s Body Mounts, Panel Mounts, Great for Indicator Lights! $12.99 BODY MOUNTS 5/16″ Threaded Housings Great for all your Indicator Lights, small and easy to mount. Drill a 5/16 hole and bolt use supplied nut and hook up to any 12 volt power supply…. |
No Comments
No comments yet.
RSS feed for comments on this post.
Sorry, the comment form is closed at this time.