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Hintergrundstoff oder Pappe?

Background fabric or cardboard?



Frage von Johannes:
Dezember 2009

Hello, for a couple of presentations I need a background or the background should be white. Which the presenter as in "there is nothing", one knows it even from some programs. Now I wonder whether I'll buy the white fleece or whether I would rather reach for cardboard photo should I? What are your experiences to tell?



Antwort von Axel:

A quick & dirty solution for a "Lumakey" is a white wood-chip wallpaper halt (any white wall, any structure is anyway weggestrahlt by light). They checked the cleanliness of the keys already in the recording by the zebra function of the camera: is all that has zebra, behind transparent.

This will be equal to the two main problems seem keying, and also the way to avoid them:

1. Only a separate illumination of foreground and background, and a sufficient distance from the motif of the wall prevents the "halo" of your host, eats through the background of your hair.

2. Also in the foreground image parts can be covered by the Key. Rarely, it is possible to avoid the 100%. And that should not be synonymous in every case (see below).

Lumakey This test is done in a minute. In some respects, however, is the green screen, although theoretically accurate (chroma compression formats on consumer vs.. Lumainformation, read with interest) in the practice popular. First, a garish green or royal blue area goes behind the presenter, and the terms tend to rag or cardboard to promise better results as a wall, as in Lumakey. "Uniform illumination" can account for a small area mean: Oh, not directly illuminated, and avoids the spill and allow a smaller distance. The rest of the background is removed with a very coarse mask, perhaps synonymous "crop up" and "sufficient crop left" ;-)))

- Are crude example - the blue eyes of the presenter of Blue Key with cover, it's not good to reduce the tolerance. It is better to create a rough mask over his eyes. Conversely, if the elbow extends short time keying in the rectangle, it is better for a few frames an animated mask to draw your elbows form than to increase the surface. With these principles in mind, keying is not a big deal anymore.

The best thing is, of course, the whole time just to test yourself.



Antwort von Johannes:

Thank you for your answer, my question is synonymous if they missed something. So I wanted to keep me from keying in moderation.
The "Studio" will be white. How it knows of Product Information eg Thomann, and there is then the product instead of the person or equal to 2
All product images we have white cardboard as background or as a kind of plastic, but only about synonymous. 50x50 cm. The moderators are, however, had 1.8 m wide. Now I wanted to know if I use such a board as the background (yes, there is 11x2, 5m) or prefer white Moltonstoff take so that it looks uniform.








Antwort von B.DeKid:

I like paper often do not - but just in the task of the paper is more appropriate - it is in fact throw any wrinkles!

............

Paper pick ... Curtain rod, 2x Wall Hook - Tank tape

More you will not need

Approximately 4 m roll on the ground - Height as high as it will stop - paper tape with the side tie "bands /"

Otherwise, the tips of the Lighting and distance of the person to the wall on Axel's Tips eighth.

MfG
B. DeKid




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