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La portée d'un flash : le nombre-guide - Les Numériques
- https://www.lesnumeriques.com/appareil-photo-numerique/portee-un-flash-nombre-guide-a969.html
- Autrement dit, si je photographie un sujet de luminosité normale, situé à 5 m, avec un objectif ouvert à f/8, j'aurai besoin d'un flash d'un nombre …
A Guide to Flash Photography - Institute of Photography
- https://www.institute-of-photography.com/a-guide-to-flash/
- When photographing a subject, your flash – in whatever form – acts as an emitter of white light. This emitter works in sync with your shutter to …
The Ultimate Guide to Flash Photography for Beginners
- https://iconiccamera.com/flash-photography-basics/
- Most dedicated flash units have a head that swivels up and down and rotates left and right. This means that your flash can aim up and bounce the flash down …
Guide Numbers Explained for Manual Flash – Calculator …
- 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
Beginner’s Guide to Flash Photography - SLR Lounge
- https://www.slrlounge.com/beginners-guide-to-flash-photography-tips-tricks-and-lessons/
- Step 4: Choose Your Quality of Light. Light qualities – starting from left to right: Soft, Hard, Diffused, and Specular. Learn the differences below. There is no absolute right or wrong when it comes to the artistic world of photography, however, there are looks that do tend to go better for specific situations.
Le nombre guide : pour déterminer la puissance du flash
- https://www.linternaute.com/photo_numerique/prise-de-vue/1097178-bien-connaitre-et-utiliser-son-flash/1097190-le-nombre-guide
- Le nombre guide est donné par les constructeurs dans la notice de votre flash. En voici la formule : NG = ouverture x distance. (pour une focale donnée et …
Flash Photography - Understanding Guide Numbers
- http://www.naturephotographers.net/articles0703/jm0703-1.html
- A flash that fires at Full Power may have a flash duration of only 1/800th sec., while the same flash at 1/16th power might have a duration of 1/6000th or less. At the lowest power ratio settings a flash might fire as briefly as 1/30,000th sec. on manual mode. Thus a low power ratio setting will result in a fast or very brief flash duration.
Photographie – Le flash : principe de ... - Police Scientifique
- https://www.police-scientifique.com/photographie/flash
- La puissance d’un flash est indiquée par son Nombre Guide (NG). Plus ce nombre est important, plus le flash est puissant. Les flash intégrés sur les Reflex ont généralement un nombre guide d’environ 10-12. Ce nombre guide permet d’estimer la portée du flash : Avec les facteurs de sensibilité ISO suivants :
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 …
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