I've been doing lots and lots of tests recently but all have been with low-qual and none lit screens so, heres a test that shows off the kind of screen I'm gonna be using for the final film.

right click and save as

Its still not perfect but hey, this is a low budget picture It was filmed in-doors with three light sources (the actual shoot will be done out-doors) so the quality will get better. I edited it using Premiere Pro 1.5, using both green keying and choroma keying.

The video may appear dark, if so use the sliders in Media Player to lighten it up, let me know wat u think

The screen itself is simply very light green paper, the kind u get in rolls in alot of art shops. Its prob only slightly thicker than normal A4 printing paper, maybe thinner!

OH, before u ask I've tinted the entire video to be more like the background

your key looks fine. Better than some that have made it into Robert Rodriguez's films--seriously. It's difficult to see the fine details of the key on a scaled down, heavily compressed version. Perhaps posting full res, uncompressed screen grabs would be more useful.

So, some suggestions: If you already know what the plate is going to be, try and reproduce the lighting that's in the plate. --for the foreground, not the rag. Also, try to figure out camera angles and keep them consistent throughout the plate and the keyed subjects. Like in your example, the photograph behind you (or that person) was taken very low angle and very close to the ground. Whereas the chroma key was shot a meter or two off from the ground. The background photo was also shot using a much wider angle lens than the chroma key. These little difference will make your composite look less believable. Finally, make the shot so interesting or so short that the audience doesn't have time to start thinking about if it was composited together or if it's an actual place. This guideline has worked for hollywood for decades. Keep it short and make it really visually interesting and your audience won't care.

Hi joren, thanks again for ur reply.
Heres a few uncompresseded grabs, before and after





Most of the keying effect will be applyed to driving scenes as I think it would be too hard to actualy film a conversation while on the road. I also wanna use the effect towards the end of the film, the climx takes place ontop of a tower so i'll be keying in photos and videos of skylines

Only thing wrong is around the fingers, but other then that, can't complain! Good job!

Try to use a backlight, with a orange gel on it (CTO). It will help a lot for keying

yeah Hoeks, and if you apply a color smoothing filter before the key, you'll probably get rid of the blocks around the hand. You might also try a 1 pixel matte choker after the key.

Forsakenproductions:
I agree, the fingers appear to be the worst effected areas. You can also slightly see the line where the two green screens I used connect.

Hoeks:
Wen u say a backlight, do you mean a light behind the screen? And with gell smeared onto the lense of the light?

Joren:
Can you do colour smoothing in Premiere? Also what is a 1 pixel matt choker? I havent heard of eaither of them before.

Thanks again everyone for ur feedback, good or bad, it all helps.

a gel is not a "lubricant" or any of that sort...think of those colored plastic sheets they use on lights.....those are gels....the back light is a light that is used to bring out the green screen (in this case)....it makes the green screen look greener and easier to key out.

I thought the back light (gelled) was to help avoid the green (from the green screen) from spilling onto the subject so it looks better when it's keyed out.

yes trespasser, that's right.

you can use warm lights on the subject and cool lights on the green screen to make the wavelength of light hitting both very different, and that way make it way easier to key out.