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 how to calculating GN at OneSlidePhotography.com
Zooming is a photography technique that gives the impression of motion in the pictures by changing the focal length of the lens. Adjustments of focal lengths can only be done in zoom lenses. The zoom lens is a lens that has a range of adjustable focal lengths; such as the 18-55 mm, 16-35 mm, and […]
The following questions are the most common ones asked by amateur photographers which professional photographers find ridiculous. Why? It is because photography is a piece of art and not a math calculation where one plus one results two. There are so many unnecessary questions and usually they are ones to be blamed when a photo […]
There is a friend of mine who once told me a story “yesterday, I went to an old house which is said to be haunted. Did you know what happened when I was taking a picture in an empty room? There were some mysterious circular lights and I am quite sure that at the moment, […]
There are several differences to consider when deciding whether to purchase the D5100 or D90.
People photography is always popular, as evidenced by the millions of faces, arms, legs and muscles gracing the pages of magazines, billboards and grandma’s brag book. In todays highly competitive modeling world one of the key factors that successful models must have is a clear understanding of how to pose for the camera. Every model […]
Focal length of 50mm is popular because the field of view that’s in focus is approximately what you see in the real world. There is no distortion of space like in ultra wide angle lens, and it is not compressed like telephoto lens.Therefore, focal length of 50mm is also an honest lens. Because it does […]
The arrival of the D5100 appears to signal the completion of Nikons refresh of its non-pro DSLR lineup. Nikon’s latest DSLR is official, the D5100, promising Full HD video recording, 16.2-megapixel stills, and fancy features like in-camera HDR photography, ISO 102,400 for extreme low-light shots, and effects like selective color sampling. The Nikon D5100 also […]