What is a good guide number for a flash?
What is a good guide number for a flash?
It is easy to use guide numbers to calculate either an aperture or a flash-to-subject distance. Consider a flash device with a rating of 28 meters (which might be marked “92 feet”, “28 DIN”, “28/92”, “92”, etc.).
What is Speedlight Guide number?
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.
What is effective flash range?
The flash is a device that emits light momentarily. Look for “Effective Flash Range” under the Flash section for the maximum effective distance (measured from the tip of lens) where you can still get an appropriate brightness (correct exposure) using the flash.
What do flash numbers mean?
The distance at which a built-in flash can light a subject is however limited. 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.
Is Canon 430EX II wireless?
The 430EX II also excels at ease of use, with a real power switch, dedicated control buttons, an easy-to-read custom LCD display and a built-in infrared autofocus illuminator. The 430EX works as a wireless slave, but not as a transmitter.
How do I find my guide number?
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).
What does flash coverage mean?
The angle of coverage, also known as the flash angle, refers to the area that the light from a flash can cover in terms of the lens angle-of-view (focal length). Built-in flashes have an angle of coverage designed to cover an angle-of-view equivalent to the wide-end of a standard zoom lens.
Can Canon 430EX II be used as master?
Older speedlites such as the Canon 580EX II or the Canon 430EX II only have optical wireless, whereas the newer speedlites such as the Canon 600EX II-RT can act as either radio master or optical master. The Canon 430EX III-RT can only act as a radio master.
Which is better Speedlite 430EX or 430EX II?
The Speedlite 430EX II is also quieter, recycle time is 20% faster (as compared to the 430EX) and since it is compatible with Canon’s wireless E-TTL, it can be used as an affordable “receiver unit”.
Is the canon 420EX the same as the 430EX?
420EX (2000-2005) The older Canon 420EX has essentially the same size, wireless ability, zoom range, power and features of the original 430EX (which is pretty much the same as the 430EX II). The 420EX has even simpler controls, no rear LCD, no 14mm diffuser panel and recycles a bit more slowly than the 430EX.
How tall is the canon 430EX II zoom head?
Canon 430EX II (14.8 oz./420g with 4-AA eneloop cells, 1.8 second measured recycle time, measured ISO 100 guide number of 24 meters/80 feet at 35mm, rated guide number 31m/102′ at 35mm, 24-105mm zoom head with 14mm wide panel, discontinued but still available new at Amazon or about $80 used if you know How to Win at eBay ).