Lights Features Of Studio Photography Tips
An illuminator is characterized by a series of characteristics that define, in addition to the range of action, even the final price. The first and most important it is the power, in watts. A higher power does not necessarily mean enhanced lighting: the energy saving lamps are in fact able to produce greater brightness (expressed in lumens, lm) compared to a lamp with the classic incandescent filament, in addition to generating a relatively cool light. The discriminant is defined for the lamps efficiency: the ratio of the light produced in the visible spectrum and the amount of absorbed power. The higher the efficiency (lm / w) the better the quality of our lamp.
When you buy a lamp pay close attention to the supply voltage: if the intent is to use it only in closed environments (such as a study), there orienterete on a classic 230V voltage. On the contrary, if the intent is to use it also outside, it makes more sense to a 24V or 12V voltage so as to be able to feed with portable battery.
The illuminators to emit light concentrated light directly at the subject, with a more or less narrow beam (the side flaps are also used to direct or decrease). This type of illuminator has a feature: the lens concentric circles (said Fresnel lens). This lens is required to prevent the glass of the expansion due to the temperature distorts the light rays http://bdmaster.net. There illuminators concentrated light also equipped with multiple lenses, beam shapers, whose purpose is to model the light and allow the photographer to achieve an even greater control of the light source.
The banks are of very large illuminators, whose characteristic is to emit the illumination, precisely, through a surface dozens of times higher than that of the two categories views in prior periods.
Other important parameters are the illumination intensity (measured in candelas (cd), is the amount of light energy that is emitted by a source date), the flux (in lumens, the light energy is detected at a given point), illuminance (lx = lm / m2, is the ratio of the flux received by a surface and the area of ??the surface itself), the temperature of the lamp color (normally varies between 3200 ° K or 5600 ° K, at least the professional) as well as the energy spectrum (wavelengths which are emitted by the lamp and the energy associated with them).