Hi,
Low price software have about same technology and naturally offer same performance. With low price product the background represent one surface and must be lighted more uniformely, and the background must be smooth as possible. Talent about 6 feet in front and camera about 6 to 9 feet in front of talent that means you need a room with a minimum of 12 feet x 17 feet long (24 better) at least 4 black box, 2to light the green screen and 2 for the talent + a small lamp to light the should in the back. If you light using a good setup any software can fit your work. That means with the eye dropper you pickup the green color and with the other button you adjust the pixel range value that all pixel inside this range becomes transparent. With time you learn and you need to buy all you need starting from a good software and light boxes, good green screenbackground etc…
You can start easily without to invest too much.
Regards,
YR
