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Understanding Flash's Guide Number (GN) — Daily Photography Tips
- https://www.dailyphotographytips.net/blog/flash-photography/understanding-flash-guide-number-gn#:~:text=Guide%20Number%2C%20usually%20abbreviated%20GN%2C%20determines%20power%20rating,at%20a%20particular%20shooting%20distance%20and%20ISO%20setting.
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Understanding Guide Numbers | B&H eXplora
- https://www.bhphotovideo.com/explora/photography/tips-and-solutions/understanding-guide-numbers
- GN = Subject Distance from Flash Source x f/Stop. Guide numbers are based on a simple mathematical equation that states: the light output of an electronic flash is equal to the distance of the flash unit from the subject multiplied by the lens aperture, or f/stop.
Guide Numbers Explained for Manual Flash - John Peltier …
- https://www.jmpeltier.com/guide-numbers-explained-manual-flash-calculator-chart/
- In short, guide numbers on a flash indicate how much light that flash can produce. You’ll see them in the specs indicated in either meters or …
Top 10 WHAT IS GUIDE NUMBER IN FLASH PHOTOGRAPHY …
- https://campinghiking.net/photography/what-is-guide-number-in-flash-photography/
- Understanding Camera Flash Guide Numbers, plus GN … Guide Number (GN) is a numerical method used to determine exposure of direct flash for Manual flash power levels, to automatically deal with the Inverse (4) … The flash guide number tells you – in a general sense – how powerful the flash is and hence, how much of an area it can illuminate.
Guide numbers for flash - Photography Tips, Tricks and Techniques
- https://www.photographytips.com/page.cfm/2172
- A guide number (GN) is an indication of a flash unit's power (how much light it gives off), and is used in a simple mathematical formula to calculate aperture. The formula is GN/distance = ƒ/stop. It is simply the product of a distance and an ƒ-stop that gives correct exposure with a certain film speed and flash unit.
Tutorial: How to use the guide number of your flash
- https://neilvn.com/tangents/tutorial-how-to-use-the-guide-number-of-your-flash/
- GN = distance * f-stop Your flash’s Guide Number (GN) is determined at 100 ISO, when it gives correct exposure at a certain distance, …
Flash Guide Number - The Digital SLR Guide
- https://www.digital-slr-guide.com/flash-guide-number.html
- Flash Guide Number Distance, Aperture and ISO. In order to understand how a flash guide number is calculated, you first have to understand... A Balanced Exposure. Ideally, you'd like to capture photos that look like #3 all the time - but this is sometimes... Flash Guide Number Formula. Before we dig ...
Understanding Camera Flash Guide Numbers, plus GN …
- https://scantips.com/lights/flashbasics1c.html
- Guide Number (GN) is a numerical method used to determine exposure of direct flash for Manual flash power levels, to automatically deal with the Inverse Square Law, making the math be trivial. Guide Number = Distance x fstop (values which actually give a proper exposure) f/stop = Guide Number / Distance (aperture for other distances)
What is a guide number? Photography terms explained
- https://www.eos-magazine.com/articles/eospedia/what-is/guide-number.html
- Photography terms explained GN: GUIDE NUMBER The power of a built-in flash or Speedlite is given as a guide number (GN). The higher the number, the brighter the flash. A guide number can be determined by taking a correctly exposed photograph of a subject and then multiplying the camera-to-subject distance by the lens aperture used.
Understanding Flash's Guide Number (GN) — Daily Photography Tips
- https://www.dailyphotographytips.net/blog/flash-photography/understanding-flash-guide-number-gn
- Guide Number, usually abbreviated GN, determines power rating of flash unit that describes how powerful flash unit is and how far it can shoot. In another word, GN specifies the power of an electronic flash in a way that it can be used to determine the right f-stop to use at a particular shooting distance and ISO setting.
Flash Photography - Understanding Guide Numbers
- http://www.naturephotographers.net/articles0703/jm0703-1.html
- A flash’s power is determined by its Guide Number, with low Guide Numbers (GN) indicating a weak or less powerful flash than one with a high GN. For ease of comparison, most flash GNs are rated for an ISO 100 film. If you use a film with a lower ISO the GN will be lower, and, conversely, if you use a higher speed film the GN will be higher.
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