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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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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. As a method of standardizing the process, manufacturers use ISO 100 a nd a flash ...
Guide Numbers Explained for Manual Flash - John Peltier …
- https://www.jmpeltier.com/guide-numbers-explained-manual-flash-calculator-chart/
- The more expensive Sony units, for example, have the same guide number but are calculated at a flash zoom setting of 105mm. So the Godox units aren’t as powerful. Pay attention to these specifications when looking at flash units. We’ll use a Guide Number of 60 meters in all of these examples. The flash guide number formula
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/
- Keep in mind that the GN is given for a specific zoom setting on the flash-head. Zooming from wide to tele on our flash, changes the Guide Number! The spec for the Nikon SB-910 speedlight is given as: Guide number of 34/111.5 (at ISO 100, m/ft., 35-mm zoom head position, in FX format, standard illumination pattern) for high flash output volume
Understanding Flash's Guide Number (GN) — Daily Photography Tips
- https://www.dailyphotographytips.net/blog/flash-photography/understanding-flash-guide-number-gn
- Basically, to determine the right exposure at any given ISO settings, you would divide the guide number by the distance to get appropriate f-stop. We can write the mathematical formula as, Aperture = GN / Distance. Using D90’s built-in flash as an example, at ISO 100 with its GN of 43 feet in Manual mode, if you wanted to shoot a subject at a ...
Flash Guide Number - The Digital SLR Guide
- https://www.digital-slr-guide.com/flash-guide-number.html
- Bottom line: look for a flash with a high guide number if you think that you'll often use the flash to light subjects from a distance OR if you don't want your aperture choices to be limited every time you use a flash. Guide Number Reporting. If you go shopping for an electronic flash online, you'll probably see it listed like this: [Flash Name ...
Guide numbers for flash - Photography Tips, Tricks and Techniques
- https://www.photographytips.com/page.cfm/2172
- Divide the flash-to-subject distance into the guide number. That's it. The result is the correct aperture for proper exposure. For instance, working in feet, if the guide number for your ISO setting (or film speed) and your flash unit is 56 and the flash-to-subject distance is ten feet, the correct aperture to use is ƒ/5.6. (56 divided by 10 ...
Flash Level (Guide Number) - Nikon | Imaging Products
- https://imaging.nikon.com/lineup/dslr/basics/24/02.htm
- If the flash unit has a guide number of 12 at ISO 100 and aperture is set to f/4, the subject can be up to 3 m away. If the subject is more than 3 m distant , the flash will not be bright enough to light the subject and the photograph will be underexposed.
Guide number - Canon EOS Flash Photography - He & She …
- https://www.heandshephoto.com/canon-eos-flash-photography/guide-number.html
- f-stop number = GN / distance distance = GN / f-stop number. Canon's guide numbers are measured in metres and are for ISO 100 film. Their Speedlite product names, for example, include the highest guide number of the flash. (which is the guide number for the flash when on maximum zoom in the case of zooming flashes) multiplied by 10 - eg: 550EX.
Understanding Camera Flash Guide Numbers, plus GN …
- https://scantips.com/lights/flashbasics1c.html
- If you determine the correct direct flash exposure is f/8 at 10.0 feet, then that is Guide Number 8 x 10 = GN 80, and it is valid for any other combinations multiplying to 80. This computed Guide Number is applicable for whatever ISO and flash power and …
Flash Photography - Understanding Guide Numbers
- http://www.naturephotographers.net/articles0703/jm0703-1.html
- Flash Photography - Understanding Guide Numbers. The burst of light from an electronic flash is extremely brief, lasting from what is a relatively slow 1/400th or 1/800th of a second to as fast as 1/50,000th of a second. At the slow end, the action-stopping ability of a flash is less than what is possible with a camera’s shutter speed.
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