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Understanding Camera Flash Guide Numbers, plus GN Calculator
- https://scantips.com/lights/flashbasics1c.html#:~:text=Guide%20Number%20%3D%20Distance%20x%20fstop%20%28values%20which,Guide%20Number%20%2F%20fstop%20%28distances%20for%20other%20apertures%29
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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/
- We’ll use a Guide Number of 60 meters in all of these examples. The flash guide number formula. Before we can understand anything further we need to know how the flash guide number (GN) is calculated. Distance * Aperture = GN. Flash exposure on your subject is dictated by aperture, ISO, and distance (see Inverse Square Law). Shutter speed doesn’t have much to …
Understanding Camera Flash Guide Numbers, plus GN …
- https://scantips.com/lights/flashbasics1c.html
- For any given "correct flash exposure" situation, guide number is simply numerically equal to the aperture number (like the number 8 in f/8) multiplied by the subject distance (like 10 feet). Then for example, the guide number is f/8 x 10 feet = GN 80 (feet units).
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.
Flash Guide Number - The Digital SLR Guide
- https://www.digital-slr-guide.com/flash-guide-number.html
- Guide Number = [Flash to Subject Distance] x [F-Stop] Before we dig into some examples, it's important to note the following constant in the equation: ISO. When a guide number is calculated, it is often assumed that the ISO is set to 100 , since increased ISO numbers will have an impact on the guide number calculation.
Flash Photography - Understanding Guide Numbers
- http://www.naturephotographers.net/articles0703/jm0703-1.html
- Following the formula, GN=f-stop X distance, you’d have GN= f8 x 10 feet or GN of 80. Just to drive the point home, the GN for ISO 200 film would be 160 since you gain a stop of light with the faster film, so GN= f16 x 10 feet or 160. High guide number flashes provide a greater reach or working distance for a flash.
Compare Power Rating of Camera Flashes with Guide …
- https://scantips.com/lights/flashpower.html
- Guide Number simply is the multiplied product of (flash distance x f/stop) for a proper exposure situation (normally specified for ISO 100). For example, if a certain Guide Number were equal to 100 (feet), then it says a correct direct flash exposure is f/20 at …
Photography for Beginners (The Ultimate Guide in 2022)
- https://expertphotography.com/a-beginners-guide-to-photography/
- Photography beginners, I will walk you through the 10 step process of taking sharp photos like a professional. It covers everything from choosing the right aperture and shutter speed to shooting in RAW. It’s pretty easy to make only a few small mistakes which will result in less sharp images.
Home - Photography Guides
- https://photoguides.org/
- Welcome to Photoguides.org a place where you can get information about the most exotic places to photograph in the world. We do all the hard work for you and find all the stunning locations for your next adventure. We map everything out for you. We also include camera settings, best times to shoot, and what gear to use. This map was created by ...
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