Electronic flash-light unit for use in photographyWolfgang, Ludloff
(Photography) photography in which a flashbulb or electronic flash is used to provide momentary illumination of a dark or insufficiently lit subject Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009...
A flash unit comprising a flash light source () and a projector lens () positioned to project light from the flash source onto a subject. In a preferred embodiment there are two flash light sources for projecting patterned and unpatterned light respectively on to the subject, and a circuit ...
Check your camera. If it has a hotshoe, then all you need is a flash unit. While many SLR cameras produced in the 1980s and later may have multiple contact points in the flash shoe to connect with dedicated flash systems, all you really need is the center contact and a generic automat...
However there is a very obvious difference in the relative capabilities of the lights. The technique is, low power on a speedlight (fast), in dim ambient so shutter speed does not blur it. The flash unit's specifications instead measure the actual duration of the flash directly. ...
flash - a bright patch of color used for decoration or identification; "red flashes adorned the airplane"; "a flash sewn on his sleeve indicated the unit he belonged to" patch - a piece of cloth used as decoration or to mend or cover a hole10...
The first habit to break with flash photography is the belief that you should use a flash only when you’re in a low-light situation. Often, a flash can be used to complement the ambient light in a scene to create a mood or effect. ...
From the tables one can determine the change in effective range by moving up or down and across the tables to reflect changes in shutter speed, focal length (and zoom head position) etc. By looking at the tables we can see that effective range for the unit is longest in manual control,...
In flash photography, the two most important controls over exposure are f-stop and flash-subject distance. These controls combine to create the flash unit’s Guide Number. The guide number = f-stop x flash-subject distance. For instance,GN = 10′ x f/4 = 40. The guide number is a re...
Whether you own a 35mm or digital SLR camera, a dedicated external flash unit can be a valuable accessory. Not many new models were unveiled at photokina, and three of the four were macro ringlights. These have been gaining in popularity for extra lighting in extreme close-up photography of...