GN, short for Guide Number, Is the amount of power the light transmitted by a flash device is. It’s the result from multiplying distance (in meter or feet) and aperture.
The power of the flash is measured with the GN which describes the flash’s capacity in illuminating objects within a certain distance (in meters). Modern flashes supports TLL technology that allows it to set its power according to the distance the object is to the camera, so the risk of it being too bright or too dark can be eliminated. Read the rest of this entry » .
Related Photography Ideas for GN in photography at OneSlidePhotography.com
A question most lens buyers face – Should I buy a zoom lens or one or more fixed focal length (prime) lenses?. Experienced photographers who have been around for a while, often prefer prime (fixed focal length) camera lenses over zoom models. Photography magazines always suggest the sharpness of fixed focal length lenses far outway […]
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When a curious soul decides to study photojournalism, he or she will enter into an area where there exist a heavy tradition to pass news to others and to the public. As is executed by artistic photographers, a photojournalist must have an artistic touch to produce an impactful image. Photojournalism is essentially a form of […]
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Why do you think Einstein stuck out his tongue in his most famous portrait? Many have asked that question, and there are even those that think it’s a photoshopped image. Turns out, this really was an authentic photograph and not the least bit photoshopped. So what’s the back story of this portrait?
Have you ever find your camera lens fogged after being in a cold area? Like when you’re taking a trip to the mountains or when you get out of an air conditioned vehicle? This won’t be a problem for you if the fogging only occurs on the outside of the lens. But if the fogging […]