Methods to Convert EV Into F-Stop

LV, and also Light Value, measures the brightness with the subject you are taking photos. To expose an impression correctly, you need to make sure you convert LV to EV, and also Exposure Value, which may be the measure of the lgt to which your video or digital sensor is exposed as you press the shutter introduction. EV is a schooling would include biology film speed, lens aperture good in f-stops and shutter rate. LV and EV are usually determined with spotmeters setting exposures for traditional dvd cameras, especially medium as well as large formats.

Instructions

Measure light value which includes a spotmeter. LV ranges right from L-15, when the only source of light is starlight, to L18, midday sun on open excellent skiing conditions. LV7 is typical inside light, or outdoors 10 a few minutes before sunrise or 10 a short time after sunset. Sunset views are LV 9-10. LV13 might be bright shade or light source overcast day. Gray cards fully sunlight are LV 15-16.

Convert LV to make sure you EV. Most classic spotmeters have built-in converters which you can use to translate LV to be able to EV. Many conversion tables can be obtained online. A simple route to convert LV to EV yourself is almost always to remember that" EV = LV located at ISO 100, " and therefore LV and EV at the same time have one f-stop increments. Having 50 ISO film, reveal LV 14 at EV 13. Meant for ISO 400, expose a strong LV 12 subject from EV 14.

Convert EV in order to actual exposure settings. That EV scale starts from EV 0, or f/1. 0 for one second. If you may be shooting 100 ISO the silver screen in typical afternoon sunlight when using the subject sidelit, then: LV 14 = EV 14 = f/8 from 1/125 second.

Use that "sunny 16" rule allow me to explain have a light meter and ought to estimate approximate exposure benefit. "Sunny 16" is all the rule that in glowing sunlight you expose at f/16 from the reciprocal of the movie speed. For ISO 100 roll film, that would mean f/16 during 1/125. Use an EV platform to calculate f-stops off of "sunny 16" for assigned lighting situations.

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