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 Nissin Speedlite Di866 Mark II Flash for Canon Digital Camera NEW $264.90 Time Remaining: 29d 20h 27m Buy It Now for only: $264.90 Buy It Now | Add to watch list |
 Dedicated Flash and Diffuser for Nikon D3100 D5100 D3000 D5000 D300S D90 D7000 $57.00 Time Remaining: 59m Buy It Now for only: $63.00 Buy It Now | Bid now | Add to watch list |
 Flash Diffuser for Sony A300 A230 A330 A380 A350 NEW $59.00 Time Remaining: 59m Bid now | Add to watch list |
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 Yongnuo Digital Speedlite Flash YN465 for Nikon DSLR Camera $59.99 Time Remaining: 59m Buy It Now for only: $65.99 Buy It Now | Bid now | Add to watch list |
 Canon 430EX II EOS Speedlite Flash Exclusive Pro Kit $279.00 Time Remaining: 13d 13h 29m Buy It Now for only: $279.00 Buy It Now | Add to watch list |
 QUANTARAY QTB 7500A FLASH WITH NIKON OR MINOLTA BASE 264 $14.99 Time Remaining: 2h 14m Buy It Now for only: $39.99 Buy It Now | Bid now | Add to watch list |
 Canon OA 2 Off Camera Shoe Adapter Genuine New OA2 EOS $13.73 Time Remaining: 2h 17m Bid now | Add to watch list |
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 PiXel Pawn TF 362 Wireless Flash Trigger for most SLR digital cameras $79.98 Time Remaining: 2h 18m Bid now | Add to watch list |
 Canon Speedlite 600EX RT Flash for Canon SLR Cameras $586.00 Time Remaining: 7d 9h 15m Buy It Now for only: $586.00 Buy It Now | Add to watch list |
 Sigma EF 500 DG Super Flash Shoe Mount for Sony Minolt $60.00 (1 Bid) Time Remaining: 2h 41m Bid now | Add to watch list |
 Nikon SB 600 Shoe Mount Flash $151.00 (28 Bids) Time Remaining: 2h 58m Bid now | Add to watch list |
 Oloong SP 690 Speedlite i TTL Auto Flash GN50 LCD Display for Nikon Camera $134.99 Time Remaining: 8d 21h 12m Buy It Now for only: $134.99 Buy It Now | Add to watch list |
 Canon Speedlite 580EX Shoe Mount Flash $261.00 (11 Bids) Time Remaining: 3h 57m Bid now | Add to watch list |
 Yongnuo YN 565EX Wireless Slave TTL Flash Speedlite for Canon 7D 60D 600D $150.00 Time Remaining: 7d 13h 9m Buy It Now for only: $150.00 Buy It Now | Add to watch list |
 Nikon SB 600 Shoe Mount Flash $150.00 (10 Bids) Time Remaining: 4h 51m Bid now | Add to watch list |
 CANON SPEEDLITE 540EZ SHOE MOUNT FLASH UNIT $71.00 (10 Bids) Time Remaining: 5h Bid now | Add to watch list |
 Sigma EF 610 DG ST i TTL Tilt Swivel Flash for Nikon $165.00 Time Remaining: 1d 1h 57m Buy It Now for only: $165.00 Buy It Now | Add to watch list |
 Canon Speedlite 580EX Shoe Mount Flash with Diffuser no reserve $225.00 (7 Bids) Time Remaining: 5h 39m Bid now | Add to watch list |
 CANON SPEEDLITE 420EX Flash for XT XTi XSi T1i T2i T3i 20D 30D 40D 50D 7D READ $119.99 Time Remaining: 6d 12h 30m Buy It Now for only: $119.99 Buy It Now | Add to watch list |
 Nikon SB 600 Speedlight Shoe Mount Flash Very Clean $212.50 (24 Bids) Time Remaining: 7h 6m Bid now | Add to watch list |
 Nikon SB 600 Shoe Mount Flash $175.00 Time Remaining: 7h 36m Bid now | Add to watch list |
 Better Beamer FX3 Flash Output Booster for Canon 580EX $38.95 Time Remaining: 16d 11h 49m Buy It Now for only: $38.95 Buy It Now | Add to watch list |
 Oloong Speedlight Wireless TTL Flash SP 660 II for Canon Nikon Pentax Olympus $105.99 Time Remaining: 8h 19m Bid now | Add to watch list |
 Canon Speedlite 600EX RT Shoe Mount Flash 5296B002 $584.57 Time Remaining: 7d 6h 42m Buy It Now for only: $584.57 Buy It Now | Add to watch list |
 Canon Speedlite 300EZ SLR AF Hotshoe Flash Strobe A TTL EOS Film $3.46 (4 Bids) Time Remaining: 9h 21m Bid now | Add to watch list |
 OLYMPUS FL 36R ELECTRONIC FLASH DIGITAL EVOLT USED 3 YEAR WARRANTY 1 $102.50 (7 Bids) Time Remaining: 11h 20m Bid now | Add to watch list |
 VIVITAR FLASH PRO 548 FOR NIKON D200 D50 D70 D100 D40 D60 $107.99 Time Remaining: 29d 16h 46m Buy It Now for only: $107.99 Buy It Now | Add to watch list |
 08m TTL Off Camera Flash Sync Cord Cable FC 682 s for Nikon Camera Speedlight $14.50 Time Remaining: 11h 28m Bid now | Add to watch list |
 Nissin Di866 Mark II Flash for Canon EOS DSLR F262 $258.50 Time Remaining: 12d 21h 21m Buy It Now for only: $258.50 Buy It Now | Add to watch list |
 18m TTL Off Camera Flash Sync Cord Cable FC 682 m for Nikon Camera Speedlight $16.50 Time Remaining: 11h 28m Bid now | Add to watch list |
 Canon Speedlite 480EG Handle Mount Flash Transistor Pack Diffuser Cords $99.00 (1 Bid) Time Remaining: 11h 35m Bid now | Add to watch list |
 Canon 430EX Speedlite II Flash for Digital SLR NEW $277.82 Time Remaining: 17d 4h 16m Buy It Now for only: $277.82 Buy It Now | Add to watch list |
 Sony DSC F828 Digital 8 MP Camera with Carl Zeiss Lens and Sony HVL F32X Flash $150.00 Time Remaining: 11h 50m Bid now | Add to watch list |
 PT 04 GY 4 Channels Wireless Radio Flash Trigger SET with 3 Receivers $27.99 Time Remaining: 5d 19h 47m Buy It Now for only: $27.99 Buy It Now | Add to watch list |
 Flash GN38 for Nikon D3100 D3000 D3500 D5000 D40 D60 $59.99 Time Remaining: 12h 7m Buy It Now for only: $65.99 Buy It Now | Bid now | Add to watch list |
 For Canon Flash TTL Off Shoe Cord OC E3 430EX 580EX II $24.14 Time Remaining: 12h 13m Bid now | Add to watch list |
 New NIKON SB 700 TTL Speedlight Flash Light SB700 F160 $339.00 Time Remaining: 26d 19h 37m Buy It Now for only: $339.00 Buy It Now | Add to watch list |
 I TTL OFF CAMERA SHOE CORD FOR NIKON D90 D200 D40 $29.89 Time Remaining: 12h 13m Bid now | Add to watch list |
 Canon 580EX Mark II Speedlite TTL Shoe Mount Flash NEW $467.00 Time Remaining: 7d 8h 47m Buy It Now for only: $467.00 Buy It Now | Add to watch list |
 Flash Diffuser for Sony A300 A230 A330 A380 A350 NEW $59.00 Time Remaining: 12h 14m Bid now | Add to watch list |
 Canon Speedlite 580EX II Shoe Mount Flash $344.00 (24 Bids) Time Remaining: 12h 18m Bid now | Add to watch list |
 Yongnuo YN 565EX I TTL Flash Speedlite for Nikon D3000 D3100 D5100 D5000 $153.95 Time Remaining: 16d 21h 15m Buy It Now for only: $153.95 Buy It Now | Add to watch list |
 Zeikos DEDICATED I TTL FLASH FOR NIKON D3000 D3100 D5000 D5100 D7000 $60.00 (2 Bids) Time Remaining: 12h 26m Bid now | Add to watch list |
 i TTL Off Camera FLASH sync Cord for Nikon SC 28 SC 17 $11.99 Time Remaining: 12d 18h 15m Buy It Now for only: $11.99 Buy It Now | Add to watch list |
 Ring flash o flash adapter for Canon 430EX II XSi XS XTi T1i 500D 450D $36.79 Time Remaining: 12h 28m Bid now | Add to watch list |
 Pocket Wizard Mini TT1 Transmitter for Canon NEW $179.99 Time Remaining: 12h 33m Bid now | Add to watch list |
 Vivitar DF 383 NIK AF Power Zoom Flash for Nikon $113.95 Time Remaining: 25d 9h 29m Buy It Now for only: $113.95 Buy It Now | Add to watch list |
 Nikon SB 800 Speedlight Shoe Mount Flash $255.00 (23 Bids) Time Remaining: 12h 33m Bid now | Add to watch list |
 RF 602RX Receiver for RF 602 Flash Trigger CANON NIKON $18.79 Time Remaining: 13d 22h 25m Buy It Now for only: $18.79 Buy It Now | Add to watch list |
 Off Camera TTL Flash Extension Cord for Pentax Cameras $19.99 Time Remaining: 12h 38m Buy It Now for only: $29.99 Buy It Now | Bid now | Add to watch list |
 Metz Mecablitz 45 CL 4 Handle Mount Flash $390.00 Time Remaining: 12h 45m Buy It Now for only: $450.00 Buy It Now | Bid now | Add to watch list |
 2M E TTL II Off Camera Flash Cable for CANON 580EX OC E3 $13.99 Time Remaining: 2d 16h 18m Buy It Now for only: $13.99 Buy It Now | Add to watch list |
 E TTL Off Camera FLASH Cord FOR CANON OC E3 T3i 600D T2i 550D T1i 500D 450D $13.99 Time Remaining: 12h 51m Buy It Now for only: $16.99 Buy It Now | Bid now | Add to watch list |
 RF 602 24GHz Wireless Remote Flash Trigger for CANON $26.90 Time Remaining: 19d 3h 42m Buy It Now for only: $26.90 Buy It Now | Add to watch list |
 Nikon SB80DX SB 80DX TTL Digital Flash with Case Manual $159.00 Time Remaining: 13h 19m Bid now | Add to watch list |
 Nikon SB 600 Digital I TTL Shoe Mount Flash $117.50 (16 Bids) Time Remaining: 13h 22m Bid now | Add to watch list |
 RF 602 24GHz Wireless Remote Flash Trigger for NIKON $26.90 Time Remaining: 18d 21h 2m Buy It Now for only: $26.90 Buy It Now | Add to watch list |
 Brand New TTL Remote Extension Off Camera Cable Cord MQ P1 fr Pentax AF 360 FGZ $19.99 Time Remaining: 13h 24m Bid now | Add to watch list |
 i TTL Digital Flash for Nikon D90 D700 D40 D300s D3 NEW $139.95 Time Remaining: 29d 10h 41m Buy It Now for only: $139.95 Buy It Now | Add to watch list |
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 Nikon SB 400 Shoe Mount Flash $100.00 (1 Bid) Time Remaining: 13h 45m Bid now | Add to watch list |
 Phoenix Smart Flash 92C for Canon EOS 7D 60D 50D T3i T2i XS KISS N X X2 X3 X4 $49.95 Time Remaining: 7d 1h 56m Buy It Now for only: $49.95 Buy It Now | Add to watch list |
 New Flash TTL Off Camera Shoe Cord for Canon OC E3 O7B $24.14 Time Remaining: 14h 13m Bid now | Add to watch list |
 Nissin Di866 Mark II MK Flash for Nikon DSLR D700F295 $258.50 Time Remaining: 28d 20h 55m Buy It Now for only: $258.50 Buy It Now | Add to watch list |
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 TTL Off Camera Flash Sync Cord MQ F1 for Sony Alpha $19.99 Time Remaining: 19h 36m Bid now | Add to watch list |
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Photography 101: External vs Built-in Flash by Jennifer Clarkson
External flashes, or accessory flashes, have several benefits over built-in, pop-up flashes seen on most cameras today. Power, the ability to change light source location relative to the lens, and additional features all make external flashes worth considering for the avid hobbyist.
Bulb Power
First, let's discuss power. Simply put, external flashes have much more power than built-in flashes. Think of how many times it took you to learn that your built-in flash's light fell short of the intended subject and lit only the near objects in your scene. The ability to throw light farther is measured by a flash's guide number, which used to be the only way to calculate exposure. Specifically, the correct aperture (for ISO 100) equals the guide number divided by the number of feet of the flash from the subject.
Metering with Flash
Modern external flashes allow exposure to be metered with TTL (through-the-lens) flash metering, which allows the unit to regulate the amount of light output in auto-exposure modes. The flash actually cuts off light when enough has been dispensed on the subject. Flash exposure compensation allows further fine-tuning whereby adjustments can be made to allow more or less light than the TTL metering suggests. Thus, today's external flashes only have a guide number for flash power comparisons. The guide number on a typical pop-up flash is fairly low - perhaps 40 - whereas the guide number on an external flash easily has a guide number upwards of 100 or 200. For comparison purposes, you need to understand that a guide number of 80 is four times (two stops) more powerful than 40.
Flash Proximity to Subject
External flash also allows you to distance the flash light source from the lens. This becomes very important for macro photography where pop-up flashes can actually cause shadows of the lens, based on its proximity to the large barrel. It is also more likely to cause red-eye in portrait shots, and means you cannot conveniently counteract another light source since the built-in flash is not moveable. With infrared or radio slaves, motion detectors or photo cell sensors, multiple flashes can be triggered remotely in sync, no matter how far away from the camera they are.
Fill Flash
Most accessory flashes have the ability to shoot at less than 100% power, so as to enable fill-flash in appropriate situations. Built-in flashes must be manually covered with a diffuse fabric in order to be successful at providing fill-light (e.g. brightening a flower, or combining fill-flash with slow shutter speed for fast-moving wildlife). Variable power in external flashes makes fine-tuning aperture or flash proximity to subject very easily. Some external flashes have infrared sensors that sense the distance to the subject automatically, thus synchronizing the camera to suggest a correct aperture and shutter speed.
Flash Heads
When it comes to physically setting up an external flash, most come with swivel and bounce heads, to allow more realistic and softer lighting effects by bouncing light from a white card or reflector above or to the side of the subject. These are things that a pop-up flash cannot do.
Zoom heads on external flashes allow for coverage adjustment when the flash is used in conjunction with a wide-angle or telephoto lens. The path of light covered by the flash will be modified to suit the angle of coverage by the lens. Ring flashes are a particular type of external flash that forms a ring around the barrel of the lens - they are best suited to macro or portrait photography where large lenses can get in the way of pop-up flashes and cause a shadow.
Dedicated Flashes
Dedicated flashes are external flashes built specifically to work with a particular camera's features and settings. Third party flash manufacturers such as Sigma design dedicated flashes for each of the major camera brands.
Jennifer Clarkson is a Canadian photographer living in Ottawa. She is compiling a series of Photography Tips on her website to promote the education of amateur photographers.
For more Photography Tips, or to view her Photo Gallery, please visit www.jclarksonphotography.com.
Article Submission made possible by: http://www.articles-submit.com
Courtesy of:ArticlesRus.Net
Article Source: http://www.earticlesonline.com/Article/Photography-101--External-vs-Built-in-Flash/47999
Triggering off camera flash for my Canon T1i?
I am getting the Opteka EF-600 DG Flash unit http://www.amazon.com/Opteka-EF-600-EO-TTL-Digital-Camera/dp/B001GD3Z02/ref=cm_cr_pr_product_top for my Canon t1i. I want to trigger it wirelessly. Will any radio trigger work, or do I need a specific kind? I am a bit confused about how that works. Which kind would you recommend? Preferably something on a budget. Thanks in advance
It claims to be a flash that can be used on Canon T1i's but can it?
If the trigger voltage is over 6v, it could damage your camera.
Call Canon and check before you void your warranty and have a fried camera.
800.OK-CANON