Shortly after the killing, bystanders were recording eyewitness interviews and protests on smartphones and linking to the resulting footage from their accounts.
Both of these flash units are synchronized with the camera, which means when you press the shutter button it also fires the flash at the correct time to maximize the brightness of the flash with the opening and closing of the shutter.
If you want a fashionable case and want to have the convenience of a neck strap to carry your camera, by all means, get the field case.
The shutter is based on a rotary mechanism, in that it rotates around to expose the film.
You cannot change the shutter speed and you cannot change the aperture.
The total light output is variable and the flash unit is reusable, meaning it can be flashed over and over again.
Just remember a couple of things: Hollywood Tape that shit down.
An Internet search can show plenty of examples of these things.