AV Studio Signoff
Join #support_avstudio on Slack!
Equipment Overview
Where can I use this equipment?
In the AV Studio
In the shops
Elsewhere at NL
Shop/other
Studio Advantage
General Policies
Subject overview
Cameras
A bit about Streaming
Lights
Gimbal
Light! (and shadow)
Shadows and Light Size
1” diameter light
1” light w/ 5” diffuser
The inverse square law
The inverse square law
Light intensity can be calculated with the equation:
The further you get from a light source, the brightness drops not in a linear manner, but exponentially.
A light source 1’ from the subject, but 4’ from the background will have light intensity as follows:
Subject: 1/(1^2) = 1 Background: 1/(4^2) = 1/16 = .0625
A sixteenth as much light from subject to background
Move that same light back 3’, so it is 4’ from the subject, and 7’ from the background, and you get a much smaller difference in intensity between the subject and background…
Subject: 1/(1^4) = 1/16 = .0625 Background: 1/(7^2) = 1/49 = ~.02
A ~third as much light from subject to background
What does this mean?
If you correct for the amount of light hitting the subject so it remains properly exposed…
The background will be significantly brighter when the light is further away vs. when that light is super close to the subject.
Inverse Square Law in action
Light close to subject
Dark background (sharp falloff)
Distance reduces falloff
Single light placed further away
Object and background are more evenly lit
Putting it together
If you use a large light source (using umbrellas, a softbox, or even shining through some translucent fabric) that is far from the subject and background…
you will have soft shadows and limit light falloff from subject to background.
Softbox at left, 2 background lights
Softbox (keylight)
Background
Background
This isn’t really doing anything
Blackbody temperature
Kelvin Blackbody scale
Mismatched LED lights on a house
Strobe 5600K LED panel 3200K LED panel Tungsten
5600K LED panel 3200K LED panel
Ring light controls
Adjusting the Limelite panels
Two 1’x1’ bi-color LED panel lights, by Limelite.
Power switch on the right side.
Click top button (with fader icon) to get to “PST”
Limelite Panel Demo
Press ✔ to toggle between color, intensity
Use +/- to adjust col/int
Col[or] and Int[ensity]
Color is adjustable from 3200K (“warm white” - approximating the color temperature of a tungsten light) to 5600K (“daylight” - approximating the color temperature of the sun on a bright day).
The display omits the last 0.
Intensity is adjustable from 0 (lowest brightness) to 255 (maximum brightness).
The brightest light will be at 255 at around 4400K, as both sets of LEDs will be on.
Cameras
Shutter speed
How long is the camera’s shutter open?
Shutter speed
How long is the camera’s�shutter open?
Shutter speed
How long is the camera’s�shutter open?
1/30 second
1/15 second
1/640 second
1/8000 second
Aperture
How much light is the lens letting in during the exposure?
Aperture
How much light is the lens letting in during the exposure?
Lenses with low f-numbers�(f2.8, f2, f1.8, etc) are ‘fast lenses’ and let in a lot of light, thus, you can use a faster shutter speed at a given brightness level.
f2 vs f22
“Wide open”
Lets in lots of light.
“Closed down”
Lets in little light.
Aperture
Controlling depth of field.
Depth of Field
Shallow (low F-stops)
Deep (high F-stops)
ISO
The sensitivity of your camera
White Balance
Warm
Cold
White Balance
Magenta
Green
Photos in action
Troubleshooting 101
What went wrong here?
Troubleshooting 101
What went wrong here?
The Camera (GH5)
Lumix GH5 Interface
Touchscreen flips/swivels
Lumix GH5 Interface
Many function-specific buttons
Streaming
Streaming with nice cameras
Our HDMI Capture Device
Lumix Webcam Software (beta)
Gimbal
Lightweight, 3-axis gimbal for small to medium mirrorless and DSLR cameras.
The Ronin SC is a handheld stabilizer for cameras.
It uses accelerometers and brushless motors to counteract the movement of your body, arms, and hands to stabilize a camera and smooth its motion.
Don’t lose parts!
There are MANY small parts and cables for the Ronin.
Please be sure to put everything back in the case when you are done using it, and take an inventory using the diagram at right.
Main components
Three main parts to the gimbal
Camera and base plate/dovetail
Assembly
Attach battery/grip to gimbal
Screw on tripod foot
Attach dovetail and �lens support
Balancing
Starting points
Setup the camera:
Be kind, rewindcharge, and put away when done
Did I forget the parts list?
Ronin SC resources:
TBD:
Resources for using the focus wheel/focus motor.
Camera control on the GH5
Questions?