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Hot Lights Are Cool How To Mix Tungsten And Flash Lighting For Great Results
By Jay Abend November, 2000
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Here's a Hollywood classic converted for modern photography
use. This 2k Fresnel was purchased from a West Coast cinematographer.
I bolted a Bogen 5/8" light stand adapter to the yoke and
installed a grounded Belden power cable with a switch. Boy
does this thing throw off some light. |
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There was an era long before
my time when a pro photographer shot with big, heavy, hot tungsten lighting.
In the 1930s, '40s, and '50s, hot lights were the state of the art. Giant
1k, 2k, and 5k tungsten fixtures from Hollywood suppliers flooded the
studio with 5600k light. It wasn't the most efficient way, but it was
all there was. In the '60s as the studio electronic flash became a reasonable
way to pour light on a subject at the very instant of exposure, the hot
lights started to vanish from the photo scene. By the time I was getting
into photography in the early '80s, Speedos, Ascorlights, and Normans
were pretty much all I saw.
As they say, what goes around
comes around. Hot lights have made a remarkable comeback as a real working
tool for pro photographers. Try and make a living today with nothing but
an array of hot lights and you'll probably starve, but when mixed with
a potent studio flash system you can really get some great images.
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A side view shows the key feature of a focusing Fresnel--the
crank at the front of the light (right). The "S" and "F"
stand for "Flood" and "Spot." |
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Why would you want to use continuous
lighting when you already own some snazzy flash units? Easy--by mixing
the daylight-balanced, action-stopping qualities of a powerful studio
flash with the warm, continuous qualities of tungsten or halogen lighting,
you can get a nice combination of sharpness and "fluidity." The technique
is simple--you light your image normally with your studio flash units,
then illuminate only part of the image with hot lights. You turn the modeling
lamps off on your flash units, so the only ambient light in the studio
or at your particular location is provided by your tungsten units. By
setting slow exposures and also synching with your flash units you can
combine two images in the same exposure--the first image is the sharp
image captured by the 1/1000 sec duration of your main flash units, the
second is the longer exposure provided by the tungsten lights. If you
are shooting people and can dial in a longish exposure, then you can get
the classic "motion blur" shot.
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By moving the light fixture back and forth inside the unit,
the quality of the light changes from a hard spot to a soft
flood. Those 2k bulbs are about $80 each, so I treat this
thing gently. |
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This image has nice sharp details
but the edges of the person's outline--hair, clothes, etc.--are blurry
and motion streaked. If you can get your exposure down to around 1 sec
or longer, the subtle movements of your model will create the blue. If
you hand hold, you'll add some movement of your own. I like to light the
subject with flash, then light the background with tungsten only. It's
a technique that has been made popular for the last 10 years, but done
right it still looks pretty cool.
If you're shooting products,
then you can't count on the small movements of your subject to create
a bit of motion blur. (Unless your products are alive.) There are a couple
of neat ways to still create that blurred feeling. I like to use a long
lens and hand hold while backlighting the subject with tungsten. This
creates a nice sharp image where the edges of the product are nicely blurred
with a soft, warm edge. Even if the product is staying totally still,
you can always forgo the motion and just count on the mismatch of color
temps for an interesting effect. A 5600k tungsten mixed with daylight-balanced
film will produce an exceedingly red color balance. If the bulk of your
image is lit with flash, HMI, or daylight, you can use tungsten for a
nice warm accent.
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Photogenic Minispot is really handy to have. I mix a little
Minispot tungsten into almost every flash shot. Its small
size makes it easy to squeeze in anywhere, and it produces
a beautiful light with a soft gradual falloff.
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Of course, tungsten lighting
is still a viable choice as your main light source in the studio. There
are a number of different ways to alter the light, whether it be a diffusion
panel, gobo, scrim, or softbox. The blazing heat produced by most tungsten
lighting makes it tough to just pop a tungsten light head into a standard
softbox. A normal light box is designed to handle studio flash. While
a typical studio flash head has a 200 or 250w tungsten modeling lamp,
they are usually fan cooled and don't throw off the kind of intense heat
that a 1000 or 2000w cine lamp does.
When studio flash came into
vogue in the '70s, the style of photography changed dramatically. Photographers
were no longer trying to squeeze every lumen out of their light source,
so efficient Fresnel lenses and polished aluminum reflectors were out,
and diffusion panels, umbrellas, and softboxes were in.
That's not to say that you
can't shoot soft with hot lights. I use a combination of hot lights and
flash almost all the time, and I frequently fire the hot lights through
a softbox. Don't try this with a typical light bank. You'll not only burn
up the softbox, but you'll kill the expensive tungsten bulb very quickly.
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Tales from the bargain bin--these two Colortran movie lights
were purchased for $5 each. It pays to keep your eyes open
when in a big camera store. |
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Most tungsten lights rely on
good old-fashioned convection cooling. Impede the flow of air around the
bulb and you'll burn it out in a matter of minutes. Really severe cases
of overheated light heads can get dangerous, with heat, smoke, and flames
possible.
How to diffuse a hot light
with decent control? Simple--buy the right softbox. Check with the manufacturer
for the capabilities of their particular softbox. I stumbled across a
great light bank for hot light use, the Soffbox by Larson. It's a large
square light box made of a very thin material that keeps the light in,
but allows air to flow through. You mount the light head to a sturdy metal
plate and assemble a nice metal frame, which supports the light box material.
While I believe that Larson products are only sold direct, it's a terrific
light box for the photographer who prefers tungsten lighting.
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Here's a handy unit. I found a few in my flash repairman's
garbage can. With new sockets and a well placed internal
fan they are my handiest tungsten lights, since they use
the same reflector mount as my studio flash heads.
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The hardest thing about using
tungsten lighting is finding it. Your standard pro camera store might
have one or two bottom of the line Smith Victor photoflood fixtures lying
around, but ask about the Smith Victor pro stuff and you'll get a blank
stare. Shutterbug has actually been a tremendous resource for me. I've
scoured the used gear ads looking for those magic "Fresnel" or "Tungsten
Lighting" categories. Since most of the really good stuff was designed
for the film industry, it can be tremendously costly to buy new. (Film
crews rent everything, so purchase price is never a consideration.) A
big 2k Fresnel light that was made in the '50s probably still has a few
decades of service left in it. If you buy an old movie light you'll probably
need to put a modern grounded cord on it, and perhaps replace the lamp
sockets. Once you've got it up and running you'll probably be amazed at
how much light these monsters throw out.
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Here's a great example of tungsten and flash mixed. Famed
bass player Richard Patterson was posed in New York's Studio
Instrument rentals for a magazine ad. I lit him and the
equipment with flash, then hit the background and floor
with the big tungsten units. A 1/2 sec exposure gave me
nice fluid movement in the background and a really sharp
artist with his gear. |
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If you've never really thought
about tungsten lighting, except how to overpower it with your studio flash
units when shooting on location, think again about working with mixed
light sources. I've been tracking down and buying up tungsten lights for
years, but there are plenty left at pretty fair prices, so it's not prohibitively
expensive to get started. While many photographers like to meter out the
actual color temperature of their light sources, I balance everything
for the flash and let the tungsten lights blaze away. If you bracket a
few stops in either direction, you'll always get something that looks
great. |
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