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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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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 feet. The higher the guide number the further the flash will reach. The specifications will also show the flash settings at which the guide number is calculated, including the ISO and flash zoom setting.
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.
Flash Guide Number - The Digital SLR Guide
- https://www.digital-slr-guide.com/flash-guide-number.html
- The guide numer is an indication of a flash's ability to overpower ambient light and brighten your subject. Flash Guide Number Formula There's a mathematical formula for calculating flash guide numbers: Guide Number = [Flash to Subject Distance] x [F-Stop]
Tutorial: How to use the guide number of your flash
- https://neilvn.com/tangents/tutorial-how-to-use-the-guide-number-of-your-flash/
- 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, multiplied by the f-stop
Understanding Flash's Guide Number (GN) — Daily Photography Tips
- https://www.dailyphotographytips.net/blog/flash-photography/understanding-flash-guide-number-gn
- April 12, 2011 in Flash Photography. 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.
Top 10 WHAT IS GUIDE NUMBER IN FLASH PHOTOGRAPHY …
- https://campinghiking.net/photography/what-is-guide-number-in-flash-photography/
- Understanding Flash’s Guide Number (GN) · April 12, 2011 in Flash Photography . Guide Number, usually abbreviated GN, determines power rating of flash unit (16) … 6. Demystifying Flash Guide Numbers – Vivid Light Photography. But with today’s advanced flash systems, guide numbers are most often used to compare power output between flashes.
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)
Guide number - Canon EOS Flash Photography - He & She …
- https://www.heandshephoto.com/canon-eos-flash-photography/guide-number.html
- The guide number is used in flash calculations to determine the appropriate aperture required to cover a certain distance or vice-versa. Note that technically the guide number describes the distance coverage of a flash, not its actual power output as such.
Making Sense of Your Flash's Guide Number - DIY …
- https://www.diyphotography.net/making-sense-flashs-guide-number/
- Let’s assume that you are placing a flash with a GN of 80 10 feet from your subject. Since 80÷10=8, you would dial in an aperture of f/8 for proper flash exposure. Obviously “proper” means different things to different people, but you can see how the GN gives the photographer a starting point when it comes to setting exposure values.
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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