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Mono light guide number vs watt: >> http://xoj.cloudz.pw/download?file=mono+light+guide+number+vs+watt << (Download)
Mono light guide number vs watt: >> http://xoj.cloudz.pw/read?file=mono+light+guide+number+vs+watt << (Read Online)
vivitar 283 watt seconds
godox
profoto a1
nikon sb 910 watt seconds
guide number to watt seconds converter
flash guide number comparison
guide number chart
canon 580ex ii watt seconds
Equivalence of actual flash power and Guide Number cannot be computed - there is no equivalence of watt seconds of energy and Guide Number. There is an efficiency factor in converting electrical power to lumens of light (flash is higher efficiency, comparable to fluorescent, significantly higher than incandescent). Guide
2 Sep 2016
13 Nov 2010 Guide numbers are mostly used on speedlights and watts-second is being used on monolights. Does anybody know the computation Example: a studio flash with rated at 250 Ws may have a light output equivalent to a speedlight with a GN of 63 (meters) or 209 (feet). Note that light spread affects the GN,
14 Oct 2014 Comparing power: Studio lights vs. speedlites / speed lights. Speedlights' power is given as a Guide Number (GN), and studio lights' power is usually given in Watt-second. Not an .. Thanks so much for providing a detailed comparison between the Profoto B1 monolight versus the power of a speedlight.
Guide Number is a tool to determine exposure of Direct Flash with Manual flash power levels, to automatically deal with the Inverse Square Law, making the math be These lighting modifiers affect GN value seriously, and the Inverse Square Law (light path distance) would have to be measured from the actual flash tube.
16 Oct 2015 By adding Speed Lights, Medium Strobes, and/or Full Strobes to your arsenal, you will be in control of any lighting situation. But which flash SPeedlights-vs-strobes The power of a Speed Light is given in terms of a Guide Number (GN); whereas strobes will be given in Watt Seconds (W/S). On top of that,
18 Jul 2008 A GN it telling you the effective power output taking in the reflector etc given in the GN specs. a WS rating is only telling you how much power the how quick a recycle time you need. where you need to place them. much harder to place a big monolight or pack and head unit behind a potted plant to add
19 Feb 2012 It's Watt-seconds not W/sec, it is the definition of the energy unit Joules. So it's the energy delivered during one flash burst. Since studio heads are bare-bulb units, the GN would only work in addition with a given reflector, or a given light modifier. Guide Number works better for flashes with a built-in reflector,
I was talking with a local pro recently and he indicated that a Canon 580EX with a guide number of 58 had roughly the equivalent 'power' of a 58 watt/second studio strobe. I find this comparison too simplistic but don't have a counter argument to offer. This discussion came up because he had just
1 Jan 2005 Watt-seconds is a measure of potential energy stored in flash units capacitors while guide numbers are derived from actual out put of the flash unit. Additionally there are differences in how efficiently a flash head & pack or monolight convert the potential energy stored in the capacitors to actual light, and
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