t Nikon D-SLR cameras that can record HD Video have variable bit rates, selectable from high to normal, depending upon your shooting requirements. Variable bit rates provide higher quality files. Variable bit rates mean that for areas with little or no visual or audible detail, the bit rate can drop down, to save space. This type of compression uses more efficient processing. It is more difficult to stream.nikongrossary
Photographic paper of differing grades of contrast when exposed through special contrast filters.
A type of black and white printing paper that when exposed under different color light yields different printing contrast grades.
A zoom lens - one in which focal length is variable. Elements inside a variable focus lens shift their positions, enabling the lens to change its focal length - in effect, providing one lens that has many focal lengths.
Lens of which the focal length can be continuously varied between set limits. Thelens must be refocused with each change in focal length.
A lighting control that lets you fine tune the output of flash. This comes in useful when space is limited and you can t move lights back and forth or you want to adjust the exposure of one units when used in a set to balance the exposure.