Most people tend to think of tripods as being a “unit.” In reality, most full-sized tripods can be purchased as two parts: the legs and the head. These parts may come in various configurations so that you can customize the tripod that best suits your style of shooting, your budget, and even your height! You’ll […]
Articles by Jeffrey Kontur Archives - PictureCorrect2 articles
Power, expressed in Guide Number (GN), is a measure of how much light the flash will produce. GN is a non-standard unit of measure. It basically tells you how far away a subject can be from the source of the flash, where the flash is the primary light source, and the subject to still be properly lit. The problem with this is that the distance can be expressed in either feet or meters. There is often no way of knowing which it is. GN also assumes ISO100 and f1.0 so adjustments will have to be made in the calculations to account for real-world conditions. For instance, f1.0 lenses are very rare and extremely expensive.