Whoa, too much.
Right... There.
So, exposure...
Hey everyone, Camber here back with you and today we are talking
about exposure, and if you're new here this channel is all about teaching you
how to use your camera to make good films. So if that's you, consider subscribing.
Now, exposure is the amount of light allowed to hit the image sensor of your
camera while taking a photo or a video. In the days of film cameras, there was an
actual mechanism that was in front of the film. When taking a photo, the
mechanism would move out of the way and allow light to hit the film for a period
of time. Then the mechanism would move back in front of the film and block out
the light once again. So you were literally exposing the film to light.
Hence the term, exposure. And most digital photo cameras work in a similar way, like
the DSLR, however most smaller digital photo cameras and almost all video
cameras don't have a physical mechanism in front of the sensor and instead use
an electronic shutter. So both mechanical and electronic shutters work in a
similar way, however, all you really need to know is that longer exposure times
result in a brighter image and more motion blur and shorter exposure times
result in a darker image and less blur. And for a photo you're dealing with one
exposure whereas for video you're dealing with a constant stream of exposures.
Known as frame rate.
That are anywhere from 24 to 60 frames per second for
normal-looking video and above 60 frames per second for high-speed video
typically used for slow motion. And exposure is controlled by three main
things in your camera; and that is your aperture, your shutter speed, and your ISO.
And each of these is going to get their own video in much greater detail in the
future; but for a quick overview your aperture controls how much light hits
your camera sensor, your shutter speed controls how long the light hits your
sensor, and your ISO will control the sensitivity of your sensor to light. And
for stylistic effects your aperture controls your depth of field or the
blurriness of your background, your shutter speed will control the motion blur
of your image, and the ISO is going to control how grainy your footage looks.
So when your exposure is set properly a change in any one of these settings will require
an equivalent change and one or more of the other settings, and in order to be
able to control all these settings you need to be shooting in manual mode.
But how do you know if your exposure is set properly. Well, let's take a look at the
exposure meter inside your camera. Looking at the meter scale you should
see a zero in the middle with a one and two on each side of the zero. Each of the
numbers on the meter scale represents a stop of light, which is a doubling or
halving of the amount of light let in when taking a photo. So if you hear a
person talk about increasing exposure by one stop, that simply means to capture
twice as much light as on the previous shot or half as much by decreasing a
stop. Moving to the right side of the zero results an overexposed image and to
the left results in an underexposed image. Now there are different types of
metering modes in your camera that will affect the way your camera senses light
and displays it on your metering scale, and we'll cover this in a separate video;
however, in general, if your scene is evenly lit, the zero on your metering
scale should represent a properly exposed image. So the goal is to properly
expose all of your shots, however, I prefer to be a little underexposed
because as soon as you overexpose anything, especially skin, you can't get
that information back. But on the flip side if your footage is too underexposed,
when you brighten it in editing, it'll start getting grainy very quickly.
So getting exposure correct is crucial to your footage looking good. And that's all
I have for exposure so if you made it this far, hit that thumbs up and let me
know down below if you have any more questions about exposure. Subscribe if
you haven't, and remember that the only way to get better at something is to practice.
So get out there and film something.
See you soon!
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