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 value at OneSlidePhotography.com
Tripod is an apparatus that should be considered important especially by beginners in photography. Most of them take too much importance on the great camera body and lens whereas the tripod role is actually very important especially for photographers who like to shoot landscapes. There are so many kinds of tripod but the most common […]
In Selective Color Photography Using Adobe Photoshop part 1 and part 2, I’ve explained how to achieve a selective color photograph using masking and using hue and saturation settings. In this 3rd part, I will show you how to create a selective color photograph using the “COLOR RANGE” feature on Adobe Photoshop. 1. The first […]
Recently, someone commented on the photography blog about how a friend chose a used Canon 1D Mark IIn (2005) over a Canon 7D (2009). Their friend’s reason behind this decision is quite simple; because the Canon 1D Mark IIn is classified as a professional camera. So, what really differentiate a pro camera from a non-pro? […]
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?
Of all the types of photography ever invented, I would claim that live concert photography is up there among the most difficult ones. You have five thousand fans behind you, and there is a band in front of you. Nobody stands still. In fact, even the notion of standing still ruins the idea of a […]
When discussing photography styles, the discussion will center around the unique aspects of each photographer that are apparent in their works.? Why unique? Because each photographs of each photographer is different. Whether it be from the angle the photograph is taken, how they direct their subjects, the lighting techniques they incorporate, or the post processing […]
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 […]