Wacom

Flyerfye 06-12-09 | Marks: 0 | Flag as Inappropriate

Cool idea, hadn't thought of this before. Execution proved slightly harder for me, though. The green ended up bleeding over the edges too much to create a usable chroma key, my screens just cast way too much light on the subject.

Brian_D_Watters 07-26-09 | Marks: 81 | Flag as Inappropriate

Awesome idea Royvsimonds!!! Never thought of that. =============== fmeres: To avoid light reflections there are a few things you could do. If your camera allows, you could bounce your flash. that is, angle it upward to the ceiling, or at a reflector so that it doesn't hit your subject / monitor straight on. Another option might be to use a diffuser, you could simply make one by placing a tissue over the flash, there by softening the light hitting your subject and monitor. Another really good option would be to simply angle the monitor slightly so the the reflection does not comeback at the camera. Or shoot slightly off side, angeling yourself and subject so that the monitor still fills the area behind the subject, but like angeling the monitor, no reflection is directed back at the lens. Finally, turn the flash off and light your subject from on or both sides. Keep in mind that if you use ambient light, such as incandescent light bulbs, or fluorescent lighting, it's always better to adjust your white balance settings in camera rather than try to compensate for it later with software. =========================== Flyere: Consider moving your subject further away from the monitor(s), or better yet, adjust the brightness of the monitor or "green Screen Color". :) ======================== lcue: Blue Screens used to be used lot with film based video and still photography, as a solid well lit single color background that would easily be canceled out behind a subject to isolate them from the background in so that another background could be substituted in. With digital, Blue Screens can still be used, but in most cases, Green Screens have become more reliable. The idea is to get a colored background that will contrast most with the subject you wish to isolate. Now this color ideally should be one that isn't found on the subject your are capturing. Magenta and the lime green you see above are usually pretty good picks. The background should be evenly and well lit, whether it is an actual green screen made out of some material, paint or in this case a monitor. Some software products have built in filters that with a click of a button will basically make the green invisible to show the substitute background, or even a transparent background. In photo shop, you might use a green-screen to create photo objects, which you can drop into other images without having to trace or mask around them first. if the background is a solid, evenly lit color which contrasts against your subject, you might easily use a magic wand tool in Photo shop to select all the green, then either create a layer mask, or delete the green, leaving just your subject visible. There's a hundred ways to achieve the same results in many image editing programs, but that was just an example of what you might try. ======================== Just one further note on using a monitor, remember the refresh rate of the screen you are using. In north America, our electricity works n a 60 Hertz system, where as in Germany for instance, they run on a 50 Hertz cycle. What this means, is if you are shooting with a still camera in North America against a monitor, you will need to shoot at 1/60 of second or slower in order not to get a dark bar crossing your monitor during he capture. In Germany you would need to shoot at 1/50 of a second or slower. Hmmm, now I'm not sure if that is just for progressive displays or interleave displays. Well, trial and error is always an option. hope this is helpful. cheers! - Brian D. Watters

FilmGuru 08-06-09 | Marks: 3 | Flag as Inappropriate

OYE! There are no Stupid Question here folks... Green Screen allows to to do composite shots, allowing you to drop different images into the background to make you shots more Interesting and Feasible cost wise... Its very cool if you haven't used it! -The Blond One-

Icue 02-13-10 | Marks: 0 | Flag as Inappropriate

Thanks Brian Sorry it took so long to get back to you, I've been out of the loop for a minute. This is very helpful. Thanks again.