Visual effects used to instill interest as well as portray mood and continuity to a commercial. Dissolves, Cross fades, and Montages are all opticals.
Found on
http://www.encyclo.co.uk/local/21023
Effects produced through Optical Printing, including transitions, superimposed titles, etc. Sometimes called Optical Effects. However, anything optically printed can be called an optical, so even blowing film up from 16mm to 35mm, though it does not involve an effect, is an optical.
Found on
https://www.encyclo.co.uk/local/21112
No exact match found.
