Hello there,
I'm new here )
I was wondering if anyone knows if there is a bluescreen room (for Chroma
Keying) down in Portsmouth or in the Hampshire area that can be hired out.
I need to film in one for an experimental music video I'm making that needs
to be finished by April.
Can anyone suggest any effective DIY methods? I tried using light blue
card but it wasn't great. Any help is greatly appreciated! )
It can be done digitally, all I need is the space and the screen. It's mainly
for close up work, although I need to film close ups of a drum kit on one
as well.
First of all ... consider using green not blue as the chroma colour.
Certain blues are part of flesh colours which can cause problems.
It should not need any special studio ... just enough green/blue
paper to cover the area behind the performer. You can change the
apparent size on the final frame digitally.
Keep a fair gap between backing and performer to avoid shadows.
Light the backing as evenly as you can for easier chroma-keying.
In fact any plain colour can be chroma-keyed out but you want to
avoid colours that are part of the subject. (e.g. with green
backing do not have a green shirt on!)
You can even do it with a plain white wall and reasonably even
colour floodlighting.
Don't you have a friend with a black painted wall or a burgundy
one? They might chroma-key well.
Do a couple of tests before spending too much time shooting.
An NLE package such as Premiere will easily use any colour for
the chroma key area and can be set to accept a fair variation
in the greens/blues/whatever.
Another advice I have seen on internet, if you take the DIY route, is that
you should light the wall and the actors/objects separately so you can do
your best to lit the wall evenly.
When I tried green screen myself a couple of years ago, I seem to have problems
with
(1) colour bleed with the edge - probably due to compression
(2) if a straight edge cuts diagonally across the screen, you get aliasing
effect so lots of visual pixels at the edge - video resolution is too low
compared to film.
Probably a good software can help. Like Dave says, you just have to test.
The material I used for blue screen (if ever) is nylon lining. It's cheap
to buy at about £3 a metre in widths of 120cm. Five metres will give you
enough backing for the drum kit. Lining cloth comes in a fabulous range of
colors and if you do end up using green then there is an excellent green
very close to studio green.
The material I used for blue screen (if ever) is nylon lining. It's cheap
to buy at about £3 a metre in widths of 120cm. Five metres will give you
enough backing for the drum kit. Lining cloth comes in a fabulous range
of
colors and if you do end up using green then there is an excellent green
very close to studio green.
Outside we use a clean sky rather than any kind of screen- you can't beat
the natural thing. Indoors the cloth would simply be pinned to the biggest
wall space available. As for wrinkles(don't know anything about winkles!
I hope that's not a speech impediment coming through)any large surface material
that has to be flat is best stored rolled but if it is folded you can still
get the iron out or the production assistant.
Paint is okay I would guess but I've never gone to that length, I prefer
to keep things compact, portable and re-usable. Paint can be difficult to
get an even covering. Color can be affected by density of chippings in the
board.
Wind may be a problem indoors depending on your diet if like me you eat porridge
oats uncooked with milk and bananas can increase the likelyhood of trouble.
)