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Guide number - Camera-wiki.org - The free camera encyclopedia
- http://camera-wiki.org/wiki/Guide_number#:~:text=The%20guide%20number%20is%20a%20value%20indicating%20the,distance%20between%20flash%20and%20image%20subject%20%28in%20meters%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.
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.
Guide number (Photography) - Definition - Lexicon & Encyclopedia
- https://en.mimi.hu/photography/guide_number.html
- Guide number Indicates the output, or power, of an electronic flash. You can use the guide number to work out the aperture or flash to subject distance by dividing either into the guide number. A photo term sometimes used to describe a flash factor, which provides a guide to correct exposure when using flash. Guide Number
Definition of guide number - iDigitalPhoto Dictionary
- http://www.idigitalphoto.com/dictionary/guide_number
- guide number. Definition: Value used in flash photography to calculate the correct lens aperture for a given flash-to-subject distance, flash coverage and film speed. * Guide number for a given film speed, when divided by distance (metric distance for metric guide number), equals lens aperture in f/numbers. * E.g. for ISO 100 film, a metric guide number of 45 and a distance of …
Guide number - Camera-wiki.org - The free camera encyclopedia
- http://camera-wiki.org/wiki/Guide_number
- The guide number is a value indicating the strength of a flashlight. According to Andreas Feininger the guide number helps finding the right aperture for flashlight exposures with the formula aperture= guide number distance between flash and image subject (in meters)
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)
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]
A guide to basic photography terms | Adobe
- https://www.adobe.com/creativecloud/photography/discover/photography-terms.html
- F-stop: The size of the aperture opening, also known as the f-number. A small f-number means the aperture is open more. A larger f-number means it’s open less. For example, f/1 lets in much more light than f/6. ISO: How sensitive your camera is to light. A higher ISO will be more sensitive and photos will generally be brighter. A lower ISO less so.
Guide Numbers Explained for Manual Flash - John Peltier …
- https://www.jmpeltier.com/guide-numbers-explained-manual-flash-calculator-chart/
- What is a guide number? 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.
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