Posts tagged Ws

Soft-Box VS Beauty-Dish

Last Monday nights shoot idea was based around using one key light in the same position. I didn’t want to change the position, power output or the aperture of my camera, simply change the light-modifiers to have a 100% comparison between Soft-Box VS Beauty-Dish.



Continue reading Soft-Box VS Beauty-Dish «Soft-Box VS Beauty-Dish»

Watt-Seconds vs. Guide Numbers

Recently I have been experimenting a lot with mixing different light sources weather it’s studio flashes, System flashes or constant lighting. And guessing the exposure can get complicated. Guide numbers are mostly used on system flashes (speedlights) and watts-second is being used on monolights.


Watt-seconds (Ws) is a unit of energy. When reading flash unit specifications, the Ws rating is the amount of energy that can be stored in its capacitors and released when the flash is fired.

The Guide Number (GN), on the other hand, is a measure of light. It indicates how intense the light from a single flash is when falling on the subject.


Continue reading Watt-Seconds vs. Guide Numbers «Watt-Seconds vs. Guide Numbers»