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Nikon | Imaging Products | DSLR Camera Basics | Flash ...
- https://imaging.nikon.com/lineup/dslr/basics/24/02.htm#:~:text=Flash%20Level%20%28Guide%20Number%29%20In%20flash%20photography%2C%20the,to%20photograph%20a%20subject%20at%20a%20given%20distance.
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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
- As a method of standardizing the process, manufacturers use ISO 100 a nd a flash-to-subject distance of 10' as fixed reference points when calibrating guide numbers. An example of this formula: a flash unit with a GN of 40 would require an aperture of f/4 at a subject-to-flash distance of 10' ( GN = 10' x f/4 = 40 ).
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 - Tangents
- https://neilvn.com/tangents/tutorial-how-to-use-the-guide-number-of-your-flash/
- Guide Number: 118′ (36 m) at ISO 100 … for the flash-head zoomed to 35mm The GN of 118 is close enough to the Nikon’s that the explanation is the same for 35mm flash-head zoom. For the flash zoomed to 35mm, the aperture would be 118/10 = f/11 (If your Math insists it isn’t f/11 keep in mind that the next 1/3rd stop setting down from f/11 is f/13)
Flash Level (Guide Number) - Nikon | Imaging Products
- https://imaging.nikon.com/lineup/dslr/basics/24/02.htm
- The flash guide number (GN) is a measure of the distance at which the flash can illuminate a subject. The higher the guide number, the greater the distance at which the light from the flash is sufficient for optimal exposure. The formula for calculating the guide number is as follows: Guide number (GN)=distance (meters) × aperture (f-number)
Flash Guide Number | Beginners Tutorial | Photography Tips
- https://www.youtube.com/watch?v=B8B35Km-d9A
- Check out our video to learn about the Flash Guide Number and how to measure it. Find yours here: https://amzn.to/2Uk8i9i #CommissionsEarnedSubscribe to our ...
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.
Guide number - Wikipedia
- https://en.wikipedia.org/wiki/Guide_number
- Example: Guide number = 48 (m) and the distance is 6 meters; one needs and aperture of f /8 (GN 48 ÷ 6 m = f /8). Example for finding a distance. Suppose a photographer wants to shoot with an aperture of f /2.8 and the guide number is 28 (m) / 92 (ft). The flash device must be 10 meters (33 feet) from the subject.
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)
Compare Power Rating of Camera Flashes with Guide …
- https://scantips.com/lights/flashpower.html
- The simple rule is: Guide Number = distance x fstop Number (for any proper direct flash exposure). Therefore, double GN is double distance or double fstop Number (which is 2 EV stops of exposure). So comparing as f/stops works too.
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