Fog can completely transform the look of your film, but only if you use it right. In this video, we break down when to use fog, how to get the best results, and what to watch out for. Whether you’re shooting interviews, music videos, or short films, this is a quick guide to leveling up your visuals with atmosphere.
[Music]
Heat. Heat.
[Music]
[Applause]
One of the easiest and simplest ways
that you can make your shots look better
is to use fog in your image. Just by
using fog, you can turn your images from
looking like this into this. So, if
you've never heard of it, what is fog
and how do we actually use it
effectively? The number one reason
filmmakers use fog is to introduce depth
and add volume to their lighting. When
you're using a camera and lens, you're
flattening out your 3D world into a 2D
image. That's why cinematographers like
to use things like foreground elements,
background elements, lighting, all that
kind of stuff in order to shape a 2D
image to look more like a 3D world. And
fog is a thicker substance than water
vapor. Water vapor is just water and it
just kind of dissipates after you
release it. This gives you the ability
to see the shape of your light. It adds
another dimension to your shot and it
also kind of gives character to your
lighting. Now, fog isn't really
something that I've used a whole ton of
in the past. For my projects, when I'm
shooting commercials and live events, it
doesn't really call for fog, so I never
really get the chance to play around
with it, but it is very exciting when
you do get the chance to mess around
with fog. Now, when I'm going into a
project and I know that I'm going to be
using fog, I'm going to give myself some
prep time in order to get the fog
looking right. You can't just release it
and then immediately expect to start
shooting with it. It's not going to look
good at all. Fog needs a lot of time to
settle in before it looks its best. Now,
I'm using the Cobalt CF5 fog machine.
Here's what happens when you immediately
start shooting before you let it settle.
You'll notice that the particles are
moving all around in the shot, and it
looks like my computer is on fire. It's
like smoke coming out of it or
something. Definitely not what I'm
trying to go for. And then in the next
shot, this is what it looks like after
you wait 10 to 15 minutes for the fog to
really settle down. And you can tell
it's way less distracting, but you can
still see the shape of the light that's
coming in through the window right
behind me. Now, once I release the fog
from the CF5, I like to manually start
fanning it with like a newspaper or some
magazine or something like that.
Anything that can make the fog disperse
and disappear and dissipate into the air
a lot faster. The CF5 actually does come
with a fan unit attached to the front of
it magnetically, which is really cool.
You can set the fan speed to three
different levels. I usually put it on
the highest, the strongest level.
Combining that little fan and me
manually fanning it out, it makes the
fog even out a lot faster. Now, I
probably should have started with this
first, but it's important to note that
you don't want any air flow. You don't
want AC on. You don't want doors open,
windows open. You want everything closed
and none of the air inside the room that
you're working in to be moving around.
Cuz once you start having air move
around, it takes that fog and it just
like shoves it right out the window or
shoves it right out the door or sucks it
right back into the ventilation if the
AC is on. On a recent shoot at a
restaurant, AC was on and we found out
really, really quickly that, you know,
fog doesn't like AC. We tried to release
fog into the whole room and within a few
seconds, it was just gone. It was like
you didn't, it did not stay in the air
for long at all. So, make sure you turn
everything off. No air flow at all. Now,
it's also important to not use too much
fog and not overdo it, or else you'll
lose a lot of contrast, a lot of
saturation, and it'll make your image
look really gloomy and hazy, which could
be a look that you're trying to go
after. But definitely for me, in this
particular shot right here, this was
definitely not what I was going for.
It's easier to add fog than to get rid
of it. So, use a little bit at first,
fan it out, see how you like it, if it's
not enough, then add more to it. The CF5
has a really cool interval release
feature that allows you to add a certain
amount of fog after a certain amount of
time. Kind of like a time-lapse feature.
And I actually found this to be really,
really useful. It helps me dial in
exactly how much fog I want. So, what
I'll do is I'll continually release fog
for like a minute or so and then just to
see how it looks, fan it out, and then
the little CF5 will just release 5
seconds of fog and then wait 40 seconds
and then release 5 seconds of fog. And
it'll do that like 40 times over again.
So that way I'm not all of a sudden
adding so much fog into the atmosphere
and I'm letting it go 5 seconds at a
time. So always remember with fog, start
small and then go big gradually. The
best way that I found to really maximize
that wow factor when I'm shooting with
fog is to use hard directional light.
That's backlighting the fog at an angle.
That means you want to be using fog when
you have something to break up the
light. Ideally, you want to be shooting
indoors, maybe with light coming in
through a window or using your own light
and attaching maybe like a spotlight
mount to it so that you can actually
shape the beam of that light. Or if
you're outdoors, you might want to be
shooting with trees, lots of trees,
breaking up the sunlight with leaves and
stuff like that. But with this little
CF5 fog machine, you're probably not
going to be taking this outdoors anytime
soon. It's very small, so you're not
going to be outputting a whole ton of
fog. Don't use it in broad bare
daylight. you're never going to see any
like light beams or any shape to the
light because the light is just
literally everywhere when I'm shooting
with soft light and trying to use fog
with it. What I found that is you will
most likely get the highlights to bloom
more than getting shape on the light,
which isn't really what I was going
after in my shots. You can see these two
examples right here where I am being
backlit and I'm shooting directly into
the window with sunlight coming in. The
sunlight, however, is behind some
clouds. It was a cloudyish day. It was
intermittent clouds. So just at that
moment when I was shooting, the sun was
right behind clouds and uh it created
this really soft light. It looks really
nice. And because the light was very
directionless, the fog didn't help at
all. It just made everything more
directionless. Versus when I was
actually using my own light, the Cobalt
CL330, and attaching it with the God Doc
Spotlight mount, I was able to get that
fog to really bring out that shape from
the light. And because you could see
that beam of light really clearly, it
just helped draw your eyes towards
whatever the subject was. In this case,
it was me as I was working. And my
camera placement was also really
important. Like I said, I don't want the
camera to be directly in front of the
light, shooting into the light. That
way, you don't really get to see the
shape of the light. I like having the
light backlighting the fog at an angle
so that you can actually see the outline
of that shape of the light. All right,
cool. This was a very fun little
experiment. The CF5 is a really cool
little portable fog machine. You would
really ideally just use it for something
like a home office space like a 10 x 12
or 10 x10 office space like the one I
have. Anything bigger than this, like
even if I tried to do it in my living
room, which is kind of a bigger space,
it probably won't work the best. It
probably will take a lot of time for the
fog to fill up the entire space. And
then for the fog to be at its most
optimal level, it's going to take a lot
of time for the fog to just settle in.
So, I would ideally want to use
something bigger for a fog machine or
you would just use it in a smaller
environment. And as with most fog
machines, they're going to be loud.
They're going to have a fan. They're
going to have some sort of like
mechanism or motor to spit out the fog.
And so, that's going to be that's going
to be loud. So, you're not going to be
able to have any dialogue as the thing
is
going. Otherwise, overall, I had a
really fun time messing around with fog.
This is one of the rare few times that I
get to actually play around with
something like this. But that's it for
this quick little video of me relearning
how to use Fog. Let me know if you have
any questions or comments down below.
That's it. My name is Alex Chong and
I'll see you later. Bye.