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Topic: Camera flash

	Elan II flash system FAQ
		TTL Flash Metering Sensor: The TTL flash metering sensor (positioned in the camera's mirror chamber and aimed at the film plane) is used for A-TTL and TTL flash readings off the film plane during exposure.
		The flash emits a series of brief flashes at high frequency (around 50 KHz or higher) to uniformly expose film while the shutter's slit is moving across the film.
		Flash Exposure Compensation Flash exposure compensation adjusts the level of illumination provided by the flash, and is therefore an important method of creative control for all kinds of flash photography.
	bobatkins.photo.net /info/faq30/flashfaq.htm (2818 words)

	Central Camera's Metz Flash Tips Page (Site not responding. Last check: 2007-11-06)
		With TTL flash mode the light output of the flash unit is controlled by a sensor inside the camera.
		The camera transmits a stop signal to the flash unit as soon as the amount of light is sufficient for a correct exposure.
		The advantage of TTL flash is that all factors contributing to a loss of light, such as filters, extension rings or bellows, etc., are taken into account at the point of measurement (Off the Film Plane).
	www.central-camera.com /flash/metz/flash_tips.htm (927 words)

	Electronic Flash Information
		If the power or the flash stays constant, it is necessary to open up the camera's aperture as the distance between the flash unit and the subject is increased.
		For a fair comparison with a non-zoom unit, the coverage angle of the non-zoom (typically corresponding to 28mm or 35mm lenses) should be known, and the GN of the zoom flash at that focal length should be used in the comparison.
		Other factors which limit working distance are limits on the sensitivity of the light meter in the flash unit or in the camera, as well as parallax problems, when the lower end of the light cone gets into the field of view of the lens at shorter distances.
	www.chem.helsinki.fi /~toomas/photo/flash-faq.html (3730 words)

	Digital Camera Tip - Flash Photography (Site not responding. Last check: 2007-11-06)
		First, read the camera instruction book and learn how to turn off the flash, and how to employ the "force flash" function (that means making the camera's flash operate in bright light).
		Sometimes flash will ruin a picture if a photo is being made through glass, such as photographing a painting under glass in a museum, or taking a photo through a bus window.
		Frequently more expensive cameras have a "hot shoe" flash contact at the top of the camera so that a supplementary flash unit can be attached -- camera manufacturers often offer special integrated flash units.
	www.bytecamera.com /content/view/275/2 (526 words)

	Chapter 6. Automatic Flash
		Flash photography has come a long way since the 19th century when a photographer had to ignite a tray filled with gunpowder to illuminate a scene.
		Another way to use external flash is to buy a slave flash unit that fires automatically when it senses the burst of flash from the camera’s built-in flash unit.
		Since many digital cameras fire the flash twice for each picture (the first is a pre-flash to set color balance), these units have to be adjustable so they fire when the camera’s second flash goes off.
	www.shortcourses.com /using/flash/chapter6.htm (1558 words)

	Blast Destroys Camera, Flash Card Survives - Photography News - Designtechnica
		A news photographer's camera was destroyed during the recent demolition of a MIssissippi River bridge, but the camera's Compact Flash card survived to tell the story.
		It was a shot of his camera being ripped apart in midair.
		Of the two adjacent cameras, both of which he had borrowed from a friend, one had its lens broken; the other suffered minor damage.
	news.designtechnica.com /article5140.html (934 words)

	camera collector - ozcamera
		All cameras, flash units, sundries etc. are sold in "as is" condition, I have done my best to give an accurate description of each item, however I have no expertise in this field being only an amateur collector.
		If you are able to pass on to me information in regard to any of the cameras I have listed, thereby enabling me to give a more informed description, such information will be greatly appreciated.
		Cameras, Flash Units and Sundry Items from my collection are offered as collector's items.
	www.ozcamera.com (736 words)

	PHYS345 Laboratory: Camera Flash and Transients in Circuits
		The inner workings of a disposable flash camera is investigated here by dissecting the camera and making a few simple electrical measurements.
		Sketch the camera as it is disassembled, showing its parts and their interactions in some detail to assist in the reassembly.
		Connect the scope probe across the battery when installed in the camera; the probe should be used in the x10 setting to protect the scope against an accidental encounter with a higher than expected voltage.
	www.physics.udel.edu /wwwusers/watson/phys345/Fall1998/lab/camera.html (1156 words)

	Flash Photography with Canon EOS Cameras - Part I. (Site not responding. Last check: 2007-11-06)
		This is known as its flash sync or X-sync speed, and varies from 1/90 sec on low-end cameras to 1/250 on pro cameras.
		As soon as the flash unit determines that the foreground subject has been adequately lit - by this realtime measurement of reflected flash light - it cuts off the power to the flash tube and the light from the flash unit is immediately quenched.
		The flash unit fires a preflash (either near-infrared light from a front-mounted secondary flash bulb or white light from the main flash bulb, depending on the flash unit and operating mode) in conjunction with the ambient light metering, in order to determine the approximate distance from the flash to the main subject.
	photonotes.org /articles/eos-flash (13788 words)

	Review of multi-flash imaging with the non-photorealistic camera
		The multi-flash camera's non-photorealistic images look like line drawings, but have an advantage over hand made line drawings for they are able depict real-world scenes with precision and, most importanly, speed impossible for the human eye/hand.
		The multi-flash camera uses four strategically placed flashes that cast shadows along the depth discontinuities of a scene.
		The position of the shadows is of course determined by the position of the camera and flashbulb: when the flashbulb is on the right, the shadows are created on the left, and so on.
	www.photo.net /learn/technology/mflash/merl-non-photo.html (681 words)

	Spud Gun Igniter From Disposable Camera Flash
		Camera flashes typically operate by charging up a nice-sized (200-500 uF) capacitor to approximately 300 Volts.
		The flash tube will be eliminated and the electrodes will be exposed to a fuel/air mixture environment.
		Unsolder the flash tube and solder in some wires where the tube used to be.
	www.angelfire.com /80s/sixmhz/camera.html (1212 words)

	Single Use Camera Disposable camera flash
		The Disposable/Single Use Camera is ideal for placing on tables at weddings and other funtions for your guests to take photos of events which would otherwise not be seen.
		The cameras are small, fitting easily into a pocket.
		No need for carrying a bulky camera during walks, hikes or climbs.
	single_use_camera.tripod.com (147 words)

	Digital Camera flash synch problems explained
		John is entirely correct -- when a built-in flash on the digital camera is set for red-eye reduction, the short pre-flash can cause external flash units to fire prematurely.
		The trigger voltage on old flash units can be hundreds of volts, enough to fry the electronic circuitry of your nice new camera, or cause pitting of the electronic connections which will eventually lead to camera failure and expensive $$$ repair bills.
		Canon cameras should only be used with flash units which have a trigger voltage of no more than 6 volts.
	www.acecam.com /photography/2907.html (472 words)

	Digital camera flash
		This is caused by reflection of the flash in the retina.
		However a slave flash would NOT have resolved the second problem, red eyes, since the built-in flash would be reflected anyhow in the eyes of the person.
		The serial resistance of the Agfa flash circuit was so high that the 1 M resistance caused a voltage collapse and hence it did not work.
	www.xs4all.nl /~jjbrouwe/flash/1.html (716 words)

	SD Memory Card Digital Camera Memory Cards Compact Flash Memory Stick
		Digital camera Flash Memory is very important and often an overlooked piece of digital photography equipment, second to the camera itself.
		There are many types of flash Flash Memory cards and it's a great idea to determin what type of Flash Memory a camera uses before you buy your first digital camera.
		Although flash Flash Memory cards are reusable, they don't have a limitless capacity and it's always good to have more than you actually need.
	www.memoryxflash.com (1488 words)

	How to use Nikon CoolPix 990 / 995 / 4500 with studio strobes or off-camera (external) flash units
		To soften the harsh flash effect, a LUMIQUEST PROMAX MINI SOFTBOX was attached to the flash using a thick rubber band.
		If you are not familiar with CoolPix 990 and its flash applications, I promise you that in the beginning it WILL frustrate you because the flash would not fire.
		If the smallest aperture of the camera is still too large for the strobe/flash unit (your pictures are overexposed) you can use Neutral Density filters to reduce the amount of light reaching the camera.
	www.e-zonesystem.com /990flash (1422 words)

	The Disposable Camera (Site not responding. Last check: 2007-11-06)
		So, to summarize, to make the tube flash, apply a medium voltage - a few hundred volts - across the tube, then apply a trigger pulse (maybe 1000 volts) to start the ionization, and shove current through the tube to supply energy and make light.
		The flash tube needs a lot of charge stored at high pressure (a few hundred volts).
		A capacitor is made by putting an insulator between two conductors with large areas, like two pieces of aluminum foil separated by a sheet of plastic wrap.
	www.ee.washington.edu /conselec/CE/kuhn/labs/camera/fl.htm (1294 words)

	LED Camera Phone Flash - LED Flash
		The new Luxeon Flash LEDs produce flash illumination that is up to 12 times brighter than today's devices, allowing consumers to take high quality phone pictures in low-light environments at distances of 1 to 2 meters.
		A brighter flash capability is necessary for 1.3 megapixel and better phone cameras now coming on the market.
		This makes it the first camera phone light source that is capable of producing light levels comparable to the flash devices in digital still cameras.
	www.lumileds.com /solutions/solution.cfm?id=9 (203 words)

	Howstuffworks "How Camera Flashes Work"
		If you've read How Cameras Work, you know that it takes a lot of light to expose a vivid image onto film.
		For most indoor photography, where there is relatively little ambient light, you either need to expose the film for a longer period of time or momentarily increase the light level to get a clear picture.
		As we'll see, a standard camera flash is a great demonstration of how basic electronic components can work together in a simple circuit.
	electronics.howstuffworks.com /camera-flash.htm (165 words)

	Don's Xenon Flash and Strobe Page
		Some xenon flash basics, helpful hints, precautions, and tons of actual schematics from Sam Goldwasser, and a few more from his correspondents.
		Here are some sources, with catalog numbers, prices, and descriptions of several strobes, camera flash units, partial strobes/flash units, as well as just parts.
		For one thing, you improve efficiency at lower flash energy levels if the voltage is higher than the flashtube normally takes in camera flash use.
	www.misty.com /~don/donflash.html (1036 words)

	Nokia - Nokia Camera Flash
		Light up your photos with the Nokia Camera Flash -- a lightweight, compact enhancement for your Nokia 7610 or 6630 imaging phone.
		The Nokia Camera Flash attaches directly to the phone’s Pop-Port™, so there are no cables or wires required.
		And it has a separate battery, so it doesn’t consume your phone battery and you can snap more great pictures – up to 200 flashes when the battery is fully charged.
	www.nokia.com /nokia/0,,58974,00.html (93 words)

	Slave Flash Products for Digital Cameras
		The pre-flashes are used to set the white balance of the camera's image sensor chip - not the exposure.
		Our slave flash units are specially designed to fire on the correct flash sensed by their built in optical sensor and circuitry, thus solving the digital camera flash problem.
		The new RF-50 Ring Flash has built in digital slave circuitry and needs only to be screwed on to the lens threads of your camera (specify camera when ordering).
	www.srelectronics.com (591 words)

	Buena Software, Inc.: Effect Essentials - Camera Flash (Site not responding. Last check: 2007-11-06)
		Whether you're shooting wedding videos or feature films, you've probably had a need for a camera flash effect.
		While an effect like this should be timeless, it shouldn't be time consuming to put together.
		You can also use the Camera Flash effect to create artistic effects that are unlike any real phenomenon.
	www.buena.com /ee/cameraflash.shtml (292 words)

	Vivitar Flashes (Site not responding. Last check: 2007-11-06)
		Acts as a slave to your integral (built-in) digital camera flash
		Flash head manually zooms to match 35mm, 50mm and 85mm focal lengths
		Control flash distance range and depth of field with four auto f/stop settings
	www.vivitar.com /Products/Flashes/flash.html (369 words)

	My Off Camera Flash Set Up
		It doesn't fit the 995 because the flash is in the way.
		The AS-10 is Nikon's multi flash shoe which can connect three flash units plus one in the shoe.
		It can screw into the AS-10 or directly into the SB24 (but you will still need an adapter so the flash can be connected to the 1/4x20 screw on the flash bracket) and fits the CoolPix 990 flash connector socket.
	bermangraphics.com /coolpix/flashsetup.htm (286 words)

	Nikon SC-17 TTL cable for off camera flash (Site not responding. Last check: 2007-11-06)
		I have got a F100 and SB28 and AF Nikkor 85mm f1.4D prime lens.
		I will be either holidng the flash with my left hand or mounting it on a stand.
		First, tell me how long this cable is and this will tell me what you can and can't do.
	www.acecam.com /message/4242.html (207 words)

	DIGITAL FLASH Cards
		Both times, my compact flash card and reader was at my door in 3 days or less even though I selected the cheapest shipping method!
		Check your camera manual or the manufacturer's website for a quick answer.
		Email or call us toll free at 866-621-2223 and we will be glad to help.
	www.memorysuppliers.com /smartmedia.html (407 words)

	DS3888 VC@m VGA 4-in-1 Digital Camera with Flash by Oregon Scientific
		Designed for users 9 and up, this camera is a great tool for learning digital photography.
		These accessories are especially useful when you use the self-timer to take photos or when you use the DS3888 as a PC web cam.
		For the latest Oregon Scientific digital camera PC compatibility chart (which lists the Windows and Macintosh operating systems with which each Oregon Scientific digital camera is compatible), please go to: http://www2.oregonscientific.com/consumer/downloads.html
	www.partshelf.com /osds3888.html (1246 words)

	Digital Camera Flash Memory, Digital Camera Flash computer memory, Laptop Memory, Digital Camera Flash Desktop Memory, ...
		Digital Camera Flash Memory, Digital Camera Flash computer memory, Laptop Memory, Digital Camera Flash Desktop Memory, Digital Camera Flash Notebook Memory, Digital Camera Flash Server Memory
		Memory is the best way to increase the speed of your computer.
		If you do not see you camera listed, please give us a call.
	www.memoryx.net /digitalcameras.html (165 words)

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