This allows you to adjust the colour manually by degrees Kelvin. The
lower numbers represent warmer colours like orange (tungsten light)
and the higher numbers are cooler (blues).
ND filter – stands for neutral density filter which is a filter designed to
go in front of the lens to block out some of the light entering the
camera. Often used by landscape photographers to be able to get slow
shutter speeds when photographing waterfalls and streams in full
daylight.
Panning – the act of using a slow shutter speed, and moving the camera
in the same direction as a moving subject, during the exposure to create
a blurred background.
Stopping down – the act of closing the aperture to a smaller opening say
f2.8 to f4."
TTL and ETTL – stands for Through the Lens, refers to the metering
system in regards to flash exposure. The flash emits light until it is
turned off by the camera sensor. ETTL is evaluative through the lens
metering and fires a “pre-flash” to evaluate and calculate for lost light
then compensates and fires the main flash. It happens so fast you do not
see two flashes.
Golden hour – also called “magic hour” is the hour right before sunset
or right after sunrise. The sun is low on the horizon and it is an optimal
time for photography.