EXPOSURE

Exposure is one of the most fundamental photography terms. When you take a picture, you press the shutter button to open a camera’s aperture, and light streams in, triggering a response from a sensor. Exposure is the amount of light that reaches your camera’s sensor, creating visual data over a period of time.

Iris or Aperture

The part of the camera that opens to let light in. The f-stop or f-number is the measurement of how open or closed the aperture is.

ISO

How sensitive your camera is to light. A higher ISO will be more sensitive and photos will generally be brighter. A lower ISO less so. This term used to apply to film, but in the digital era it is now a camera setting. (this is referred to as gain on broadcast cameras)

Shutter speeed

How long the camera’s shutter is open and the sensors inside are exposed to light. Very high shutter speeds are used for things like capturing a moving subject without blur.

Depth of Field

The difference between the closest and farthest in-focus objects in a photo. A shallow depth of field means that relatively close background objects become blurry. A deep depth of field means that faraway background objects are still in focus.

Bokeh: The Japanese word for haze or blur. Refers to intentional background blur, popular in portraits.

Exposure triangle

The combination of aperture, ISO, and shutter speed, which determines the time and intensity of light being let into the camera. Different exposures in film and digital images alike are achieved by adjusting these exposure settings.

HOW EXPOSURE TRIANGLE WORKS WITH VIDEO

In the realm of photography, mastering the interplay between APERTURE, ISO, and SHUTTER allows for precise exposure control. However, the rules shift when it comes to video.

When capturing video, selecting the appropriate shutter speed is paramount. It's recommended to set it at double the frame rate. For instance, if you're filming at 24 frames per second, ideally, aim for a shutter speed of 1/48. This practice is commonly referred to as shooting at a 180-degree shutter angle.

TFH Settings

TFH Production will shoot at a fixed aperture and shutter speed

Aperture
Sticks: f/4.0
Mobiles: f/2.8

Frame Rate / Shutter Speed
Worship: 23.98 fps - 1/48 Shutter
Sermon: 59.94 fps - 1/120 Shutter

When both IRIS and Shutter Speed are locked in place, ISO becomes the sole variable we can manipulate.