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Studentfilmmakers Magazine
Lighting a Room ‘Night for Day’
By Kevin Zanit
posted May 7, 2008, 09:04
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Click here to get a copy of the October 2006 Edition, so you can read and enjoy all of the excellent articles inside. Check out this article in the October 2006 print edition of StudentFilmmakers magazine, page 10.

Kevin Zanit is a cinematographer based in
California. His experience is mostly in music
videos and does narrative work as well. His
filmography includes Room Service (2006),
These Days (2006), Inner Prison (2005),
and Passing Moments (2003).
As a cinematographer, one of many skills
you should have is the ability to “cheat” what time of day you are shooting for
another. A situation I encounter regularly
is shooting at night in a room filled with
windows when the scene is supposed to
take place during the day.
There are many reasons why this situation
arises. Some of the more typical reasons:
time constraints of shooting in a particular
location require that work to be done at
night; work on a scene continues into
nighttime; or sometimes we may be after the
increased control of the look that shooting
night for day sometimes offers.
Night for day is a very useful tool;
however, there are several compromises to
take into consideration to accommodate this
type of shooting. Generally, you must be
content with having “blown out” windows,
(windows that will appear mostly white,
with no detail outside of them). This is
why it is very important to work with the
art department on incorporating some sort
of window coverings. I have found very
translucent white or off-white curtains work
very nicely. I find blown out curtains look
more appealing than a blown out perfect square window, but every situation is
different.
It is possible to show detail outside
the windows, but it is very difficult to
successfully light a large outside area while
also sending light in through the windows.
However, if your shot only shows a very
small amount of area outside the window, it
is possible to light that area as well.
Typically the location needs to be on the
first floor, or if on a higher level, must have
some kind of built-in platform that could
support lighting units. If it does not have a
platform that could support the lights at a
reasonable distance from the window, then
you would need a Condor type lift to hold
lights at or above window level.
If you can contend with these
compromises, you will also find there are
several advantages to shooting night for day.
You can maintain complete and total control
over how the light comes into a room
without the need to “tent” the windows to
block out the sun and then relight to your
preferences. It is easier to achieve perfect
continuity throughout the night of shooting
because there is no sun moving throughout
the day. And it is simpler to create a variety
of daytime “looks” for different parts of your
story
The general principal behind shooting
night for day with a scene that shows the
windows is to create the illusion of sunlight
by having either the windows glowing
brightly in frame as if the sun was shining
outside, and/or to incorporate shafts of “sunlight” streaking through the room.
When a window is in the shot, you have
two choices about how you want that
window to look and what it should do.
It can provide actual illumination of the
actors and the room, or it can “glow” softly
without affecting the overall light level in
the room very much.
There are infinite ways to make a window “blown out” or just glowing nearly white. A
few of the common methods are listed here,
but always remember to experiment with
your own ideas to find what works best for
you.
Place “1000H” tracing paper on the
outside of the window, cut to size, and
then place a large lighting unit a distance
from the window. This creates a very
pleasing soft light through the window that
can provide illumination in the room, or
by adjusting the brightness of the lighting
unit, can provide a glowing window that
does not affect the light levels much. You
could also substitute 1000H paper with
any diffusion of your preference, but if the
diffusion is too light, the light source behind
the window can sometimes show.
To create a more subtle “glow”, one
can place white bounce boards a distance
from the window and bounce a light
source into these boards. You can also use
a combination of both methods – using
diffusion on the windows with bounce
boards. Generally speaking, the diffusion
helps to “smooth” over the light on the
windows to insure a somewhat uniform
glow without any “black holes” through the
white.
To create a harder “sunlight” through
the windows you need to use much less
diffusion (if any) on the windows. The
problem is that a window is fairly clear,
and thus will not tend to completely blow
out, allowing you to see black outside of
the window, or even the light source itself.
A trick I have used is to lightly spray the
outside of the window with dulling spray.
This very subtle bit of material (essentially
diffusion) on the window will pick up the
light and help blow the window out without
softening the light too much. It also helps
to use a bigger light source because the
larger lens of, for example, a 20k Fresnel is
essentially a bigger source that maintains
its intensity towards the edges of the beam,
thus covering the window more evenly. You
will need to overexpose the windows more
when going for a bare window “hard light”
look. Do this with either a bigger unit, or by
lowering all your other units’ intensities, so
you can open up on the lens, thus causing
the window to be more overexposed.
Sometimes a combination of hard and
soft light through the window is needed. An
example of this would be, if you want some
general soft light with some dappled hard “sunlight” to punch things up. There are several ways I have achieved this look. You
don’t always need to have your diffusion
flush with the window. You can take a large
frame of diffusion (8’x8’ for example), and
place it several feet from the window, and
then between the gap, work in your hard
light. The only drawback to this is you tend
to need a much larger unit to fill the entire
frame evenly. Another method I have used
is to put my 1000H on the window, and
then cut a small square or two of it out.
Through the holes, I can send some very
directional hard light in to punch things up
a bit.
Using the fundamentals discussed above,
we can go through a situation I was faced
with when shooting a project with extensive
night for day work.
The above still shows the room after it
was lit at around 1:00 a.m.

First, examine the largest window on
the right. I had the art department utilize
a translucent curtain to cover this large
window. Most of the general ambiance in
the room comes from this window. Outside
of the window was a “Big Eye” 10k up high
on its stand and centered at a distance that
completely covered the window with light
The 10k mainly provided a nice general
room level, but the scene had actors seated
on the chair and couch. To bring up their
levels, and to shape the light on their
faces, I used some narrow spot PAR cans
also through that large right window for
more directional light. In many situations,
you can light the actors from the general
direction of an on screen window without
having to actually light from the window,
but in this case, there was nowhere to hide
any lights inside the set, so all light had to
come from the on screen windows.
Next, we have the two smaller windows
on the left and right. For these windows I
used the technique of placing several white
bounce boards, and shining a light (in this
case, a 1.2k PAR) into those bounce boards
outside of each window. To smooth out the
look, I placed some very light diffusion on
the windows.
I then used a small light bounced into
the ceiling to provide a bit more general
ambiance in the room. You will often find
yourself needing to bring up the ambient
levels in a room more when shooting night
for day because during the daytime sunlight
bounces off of everything which contributes
to filling things in a bit more (which can be
an advantage or disadvantage depending on
what you are going for).
Again, there are many ways to create a
night for day effect. These above techniques
are good fundamentals to practice and
see what works best for you by testing and
observation of the real world around you.
There are no rules in lighting, just simple
fundamentals to expand upon. When trying
to faithfully recreate a daylight look, I take
my cues from how the room looks in actual
daylight, and then modify that look to suit
my needs.
This article may not be reprinted in print or internet publications without express permission of StudentFilmmakers.com.
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