Green screen program refers to a technique of replacing the image at the background of the subject by any other image or graphics in a picture
. A photographer makes use of this technique to attractively prepare an image. There are a number of background images available in the market in order to create perfect pictures.
A photographer can create a variety of beautiful and wonderful pictures with the help of green screening technique. You should remember a few main points while applying this technique. If you are photographing a subject inside the studio, you need to keep different requisites in your mind. Inside the studio a photographer can make arrangements of lights but should consider a few points. The subject as well as his background should not be brightly lit. If the surroundings are brightly lit, in the picture they show a glare on the face of the subject or behind the subject. This results in color spill which is a process of light getting reflected and bouncing back from the background to the face of the subject. If a photographer is planning to shoot a scene in an open area outside the studio, one should position the subject in such a way so that the light falls on the face and lights him up clearly. You can place a green or blue color cloth behind the subject for applying green screen effect. Once you have taken a picture, you can then upload the image in the green screen program for the purpose of digitally replacing the green or blue color background image by any other desirable image. When shooting inside the studio a person can use amber gels for visual effects. You can also make use of other tools and equipments such as butterfly sheet for leaving a cool effect on the face of the subject. All these tips and tricks enable a photographer in making an attractive picture.