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 Flash GN at OneSlidePhotography.com
If you’re a DSLR camera user, there’s a simple and quick tip to protect your lens and camera, especially when you’re using a telephoto lens attached to your camera body. Do pay attention to the way you carry your camera on your shoulder. Pay close attention to the two images below and note the difference […]
There are often times circumstances where interesting objects have to be photographed in low light conditions and a flash device is undesired (if possible). Yet, a sharp resulting photograph is still the goal. Objects such as a clear nighttime view of a city, evening music concerts, or a party’s atmosphere is a shame to pass […]
When mounting a lens to a DSLR camera body, then peer into the viewfinder, what you’ll see is the image in the lens’ widest aperture settings. Now what if you want to see the image when using the smallest aperture opening straight from the viewfinder in order to get an accurate image of how the […]
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Difference between DEP (AV, A on some camera’s) and A-DEP modes Depending on the brand of your digital camera, you may have noticed 2 similar yet different modes on the dial, called DEP and A-DEP. DEP may also be sybolised by the letters AV (Canon) or A (Nikon). This clever A-DEP function allows the Canon […]
Producing razor-sharp photographs is the ultimate desire of most photography enthusiasts, and many varieties of camera features and additional accessories have been formulated for this purpose. If you’ve purchased higher-end professional-class cameras and lenses with the newest features but you have yet to achieve this razor-sharpness you desire, maybe the following things may serve as […]