November 12, 2015 1 Comment
There’s a new group on Facebook called iColorama Formulas and Techniques. It’s built for users to learn this robust app from each other, and limits its posts to explanations of how effects are achieved using iColorama. Of course, some questions arise there as well. One question that came up today requires more explanation than a single screenshot or a silent video recorded in the app can give.
There are settings under the Effects>Blend option that may not be obvious in their use. There are four sliders marked Gray, Red, Green, and Blue, with handles at both ends. I’ve discussed the Gray slider before. By moving the left handle toward the middle, you can have the blacks in your photo drop out. By moving the right handle to the middle, you can make whites drop out. This means that you can make an object on a white or black background “float” over a new background. It’s a kind of quick masking – you can find a picture of an object on a white background and quickly and easily composite that image on top of a new background.
The Red, Green and Blue sliders are not so easy to describe. I put together the following image to help show how those sliders work. It’s got 50% gray, red, green and blue squares. Feel free to copy it and follow along.