Manipulating Your Photography Background With A Chroma Key Backdrop!
† Wednesday, August 18th, 2010Have you gotten to the point of being sick and uninterested in shooting (and seeing) the identical old pictures, time and time again? You have discovered that “chroma key” is the route to go, except you don’t really understand it or even know a great deal about it? Here’s everything you’ll want to be familiar with to put it to use as a photography background!
First…What is it?
You will hear the words “green screen”, “blue screen”, and “chroma key” thrown around and employed to mean the same thing when discussing a photography background.
Chroma key just could be defined as using a backdrop that’s one un-patterned, uniformly lit color. The blue and green are the most used hues. In fact, you could work with ANY color – however blue and green are easiest. I will make clear why that’s the case in a minute.
Blue screen systems can be used for either video and still work. You shoot somebody in front of the green screen and then later (or simultaneously with high end video cameras) you eradicate the solid color and exchange it using any type of backdrop you would like!
That’s the way the local weatherman/woman does the weather report. They’re just standing in front of a chroma key and the camera digitally removes it and puts in the area weather map. They’re just watching themselves on a television monitor to determine where to point and so on. It is confusing and more difficult than you may think to be a weatherman!
Second…Why use green or blue?
Commonly we tend to work with blue and green since they are the furthest away from the colors found in skin tones. The procedure was initially done with blue, but as the quality of cameras changes, green appears to work better. It really is a lot easier to strip from the backdrop, thus most studios are switching to green. However it doesn’t hurt to possess both.
One more good advantage for green is that it results in fewer clothing conflicts.
Since the color is automatically stripped out and substituted, if the subject has on a hue of that color (blue) as part of their apparel…it is replaced. You can frequently see shirts and ties that turn into peculiar appearing holes in the subject – showing through to the replacement background.
It has even occurred among blue eyes!
Green tends to bring about less of a clothing conflict, it happens to be easier for your cameras to work with also it’s simpler and easier to light uniformly.
Even light is vital since shadows falling on the backdrop will show in the final effect. This could destroy the realistic effect of the photography background. And, working with uneven light, you would induce altered hues of the color…several of which may not get stripped out correctly.
The 3 primary types of chroma key backdrops are: fabric, paper and paint.
Paint is useful for people with a studio that has a cove and you do all your shooting there…it really is of no use if you ever ever have to go on location.
Paper comes in huge rolls, but is easily torn and constantly needs replacing. This can get costly in a hurry.
Material tends to live best and is movable. Plus material is simple to clean (dirty chroma key backdrops do not work well).
Any material store can provide some cloth that will do the work. Obtain a little and do some playing around with your photography background, any photo editing program can take out the color. Experiment with it, you will like it!