LIGHT METERS.
Currently, only photoelectric light meters are used, in which the phenomenon of the generation of an electric current when light falls on a properly constructed photoelectric cell was used.
Istnieją …
Photographer
LIGHT METERS.
Currently, only photoelectric light meters are used, in which the phenomenon of the generation of an electric current when light falls on a properly constructed photoelectric cell was used.
Istnieją …
Light measurement.
Another newly used method is called light measurement or direct light measurement, while the former is called, by contrast, object measurement. Light measurement is …
Incorrect exposure indications.
Despite the performed calibration, we unfortunately have to make deviations from the found exposure values. This is always the case with photo objects o …
Exposure measurements.
While measuring the color temperature of light is a special measurement method in color photography, especially for reversible images, this light meter is well known …
LENS EXPOSURE MEASUREMENT.
The automation of the exposure time is closely related to the issue of measuring this time not in the special viewfinder of the light meter, but directly through the lens (drawing).…
AUTOMATION OF EXPOSURE MEASUREMENT.
Attempts to automate exposure time measurement have been going on for many years. In the interwar period, experimental apparatuses were built, w których czas naświetlania sterowany …
Light meters give an objective assessment of light, but unfortunately not always accurate. Even the most perfect ones will inform us incorrectly, if we use them uncritically.
Using on purpose …
Light is electromagnetic energy, radiant, undulating transversely to the direction of propagation. It has less than a speed in a vacuum 300000 km/sek. Passing through a transparent body (center …