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 Yongnuo YN560 II YN560 II YN560II Flash Speedlite Canon 550D 1000D 500D 450D $66.85 Time Remaining: 7d 12h 13m Buy It Now for only: $66.85 Buy It Now | Add to watch list |
 Nikon Speedlight SB 600 Camera Flash $105.00 (12 Bids) Time Remaining: 2h 51m Bid now | Add to watch list |
 Nikon SB 900 AF Speedlight Flash $305.00 (26 Bids) Time Remaining: 2h 51m Bid now | Add to watch list |
 Yongnuo Flash Unit Speedlite YN 560II Ships from the USA $89.99 Time Remaining: 12d 8h 45m Buy It Now for only: $89.99 Buy It Now | Add to watch list |
 Tocad Sunpak Auto 433D Shoe Mount Flash for Minolta manual focus 35mm SLR $44.99 Time Remaining: 38m Buy It Now for only: $59.99 Buy It Now | Bid now | Add to watch list |
 YONGNUO YN 560 II Flash Speedlite for Canon 7D 60D 400D 450D 550D 600D 5D II $77.68 Time Remaining: 27d 6h 15m Buy It Now for only: $77.68 Buy It Now | Add to watch list |
 Tocad Sunpak Auto 355AF Shoe Mount Flash for Pentax 35mm Cameras $34.99 Time Remaining: 38m Buy It Now for only: $39.99 Buy It Now | Bid now | Add to watch list |
 Promaster 7500EDF Shoe Mount Flash for Canon $199.00 Time Remaining: 1h 49m Bid now | Add to watch list |
 VIVITAR SF4000 BX DIGITAL SLAVE FLASH WITH HOT SHOE NEW SF 4000 $27.95 Time Remaining: 5d 20h 1m Buy It Now for only: $27.95 Buy It Now | Add to watch list |
 Nikon SB 600 Shoe Mount Flash $152.50 (4 Bids) Time Remaining: 21h 1m Bid now | Add to watch list |
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 Canon Speedlite 199A $19.99 Time Remaining: 1h 59m Bid now | Add to watch list |
 Olympus FL 50R Electronic Flash for Digital Cameras NEW $499.99 Time Remaining: 5h 40m Bid now | Add to watch list |
 Digital Flash for Canon Rebel XTi XS XSi T1i T2i Camera $39.95 Time Remaining: 14d 5h 56m Buy It Now for only: $39.95 Buy It Now | Add to watch list |
 Nikon SB 26 flash speedlight nice $80.00 (8 Bids) Time Remaining: 1d 3h 28m Bid now | Add to watch list |
 Yongnuo Upgraded Flash Speedlite YN 560 II for Nikon D90 D5000 D80 D70s D3x D3 $74.88 Time Remaining: 27d 7h 7m Buy It Now for only: $74.88 Buy It Now | Add to watch list |
 Sigma EM 140 EM140 DG Macro Ringlight Flash for Canon E TTL II NEW $379.00 Time Remaining: 7h 23m Bid now | Add to watch list |
 Nikon SB 900 SB 900 Speedlight Shoe Mount Flash $202.50 (10 Bids) Time Remaining: 3d 21h 23m Bid now | Add to watch list |
 Yongnuo YN560 II Flash Speedlite w LCD Screen For Nikon D700 D300 YN 560 upgrade $74.55 Time Remaining: 17d 12h 5m Buy It Now for only: $74.55 Buy It Now | Add to watch list |
 Nikon SB 800 SB 800 Speedlight Shoe Mount Flash $149.50 (13 Bids) Time Remaining: 3d 21h 29m Bid now | Add to watch list |
 Yongnuo YN560 II YN560 II YN560II Flash Speedlite Nikon D90 D3100 D5000 D7000 $66.85 Time Remaining: 7d 12h 30m Buy It Now for only: $66.85 Buy It Now | Add to watch list |
 Olympus T 32 Flash Electronic Flash $9.99 (1 Bid) Time Remaining: 23h 47m Bid now | Add to watch list |
 OLYMPUS FL 36R ELECTRONIC FLASH DIGITAL EVOLT USED 3 YEAR WARRANTY 1 $80.00 (5 Bids) Time Remaining: 5d 2h 52m Bid now | Add to watch list |
 Digital Flash for Nikon D3000 D5000 D90 D40 D60 Camera $39.95 Time Remaining: 7d 22h 20m Buy It Now for only: $39.95 Buy It Now | Add to watch list |
 Vivitar 285HV 36 DIN Auto Professional Flash W Auto Bounce Control $134.99 Time Remaining: 3h 32m Bid now | Add to watch list |
 Yongnuo YN560 II YN560 II YN560II Flash Speedlite Canon 5D II 1D 7D 50D 40D 30D $66.85 Time Remaining: 7d 12h 23m Buy It Now for only: $66.85 Buy It Now | Add to watch list |
 Sigma EF 500 DG Super Shoe Mount Flash for Canon $30.00 (1 Bid) Time Remaining: 1d 3h 36m Bid now | Add to watch list |
 VTG SUNPAK AUTO PRO 120J ELECTRONIC FLASH UNIT W RECHARGEABLE BATTERY LOTLM $255.00 (11 Bids) Time Remaining: 2d 23h 45m Bid now | Add to watch list |
 Yongnuo YN560 II YN560 II YN560II Flash Speedlite Nikon D300 D700 D300s D3x D200 $66.85 Time Remaining: 7d 12h 25m Buy It Now for only: $66.85 Buy It Now | Add to watch list |
 Minolta Auto Electroflash 280PX Electronic Flash NIB in box $9.99 Time Remaining: 2d 21h 40m Bid now | Add to watch list |
 T32 ELECTRONIC FLASH W FULL AUTO CONTROL PANEL 148982 $45.00 Time Remaining: 8d 23h 52m Buy It Now for only: $45.00 Buy It Now | Add to watch list |
 Sunpak PZ40X II Power Zoom Digital Flash for Nikon $58.00 Time Remaining: 2h 39m Buy It Now for only: $64.99 Buy It Now | Bid now | Add to watch list |
 VIVITAR 283 AUTO THYRISTOR ELECTRONIC FLASH UNIT $9.99 Time Remaining: 1d 4h 3m Bid now | Add to watch list |
 Yongnuo Upgraded Flash Speedlite YN 560 II for Canon 10D 20D 30D 40D 50D $74.55 Time Remaining: 17d 12h 1m Buy It Now for only: $74.55 Buy It Now | Add to watch list |
 Working Vivitar 2800 Auto Thyristor Electronic Flash $9.97 Time Remaining: 1d 4h 44m Bid now | Add to watch list |
 Digital Flash for Canon Rebel XTi XS XSi T1i T2i Camera $39.95 Time Remaining: 26d 3h 3m Buy It Now for only: $39.95 Buy It Now | Add to watch list |
 Olympus FL 50R Electronic Flash for Digital Cameras NEW $499.99 Time Remaining: 2d 5h 40m Bid now | Add to watch list |
 TOSHIBA QCC10S ELECTRONIC FLASH 11151 $24.51 Time Remaining: 1d 3h 5m Bid now | Add to watch list |
 SEAGULL SG 100 Universal Hot Shoe Camera Flash SG100 $24.50 Time Remaining: 26d 9h 57m Buy It Now for only: $24.50 Buy It Now | Add to watch list |
 Sigma EM 140 EM140 DG Macro Ringlight Flash for Canon E TTL II NEW $379.00 Time Remaining: 2d 7h 23m Bid now | Add to watch list |
 VIVITAR GN42 Speedlite Flash TTL LCD for Canon EOS T3I 600D T3 1100D 1000D $109.95 Time Remaining: 26d 16h 54m Buy It Now for only: $109.95 Buy It Now | Add to watch list |
 Vivitar 283 Classic Electronic Flash Auto Slave Sync Cable Clean NR $1.00 (1 Bid) Time Remaining: 5d 5h 52m Bid now | Add to watch list |
 Olympus Camedia Electronic Flash FL 20 In Box With Manual $79.00 Time Remaining: 1d 3h 51m Buy It Now for only: $99.00 Buy It Now | Bid now | Add to watch list |
 Olympus FL 50R FL 50 R Flash for E 5 E 30 Evolt E 620 E 520 Digital SLR Camera $299.95 Time Remaining: 26d 16h 20m Buy It Now for only: $299.95 Buy It Now | Add to watch list |
 Nikon SB 20 flash + Nikon SS 20 flash case EXCELLENT almost as MINT $30.00 Time Remaining: 20h 55m Buy It Now for only: $40.00 Buy It Now | Bid now | Add to watch list |
 Yongnuo YN560 II Flash Speedlite w LCD Screen For Canon 600D 550D YN 560 upgrade $74.55 Time Remaining: 17d 12h 4m Buy It Now for only: $74.55 Buy It Now | Add to watch list |
 OLYMPUS ELECTRONIC FLASH T20 $0.99 Time Remaining: 5d 3h 55m Bid now | Add to watch list |
 Promaster FTD 5500 Shoe Mount Flash $34.99 Time Remaining: 16h 52m Buy It Now for only: $44.99 Buy It Now | Bid now | Add to watch list |
 Vivitar GN42 LCD P TTL FLASH FOR PENTAX K 5 AF360FGZ AF 360 FGZ EF 610 DG $95.99 Time Remaining: 27d 2h 4m Buy It Now for only: $95.99 Buy It Now | Add to watch list |
 Canon Speedlite 188A Camera Flash $1.00 (1 Bid) Time Remaining: 4h 45m Bid now | Add to watch list |
 Vivitar Power Zoom Flash For Canon 450D1DMKIII1DMKII $129.95 Time Remaining: 27d 8h 19m Buy It Now for only: $129.95 Buy It Now | Add to watch list |
 SUNPAK ELECTRONIC FLASH FILTER KIT FOR AUTO 411 $10.00 Time Remaining: 4d 4h 49m Bid now | Add to watch list |
 Olympus FL 36R Shoe Mount Flash $61.00 (5 Bids) Time Remaining: 6d 1h 22m Bid now | Add to watch list |
 YN460 II Flash Unit For Canon EOS 450D 500D 550D 1000D 1100D 600D 60D 50D $42.17 Time Remaining: 9d 7h 50m Buy It Now for only: $42.17 Buy It Now | Add to watch list |
 Vivitar Flash LCD VIV PRO 548 GN45 FOR NIKON D5100 D5000 D3100 D3000 D700 $99.00 Time Remaining: 2d 4h 19m Buy It Now for only: $109.00 Buy It Now | Bid now | Add to watch list |
 Vivitar 233965 285HV Non Dedicated Shoe Mount Flash Professional $84.99 Time Remaining: 14d 3h 4m Buy It Now for only: $84.99 Buy It Now | Add to watch list |
 Olympus FL 50R Electronic Flash for Digital Cameras NEW $499.99 Time Remaining: 4d 5h 39m Bid now | Add to watch list |
 VIVITAR AUTO THYRISTOR 530D AND 2800WESTON ELECTRONIC BOUNCE W 18LOT OF 3 $12.00 Time Remaining: 1d 4h 29m Bid now | Add to watch list |
 I TTL AF Flash + Free diffuser for Nikon D90 D80 D70s D60 D40 D40x D3100 D3000 $57.00 Time Remaining: 25d 17h 54m Buy It Now for only: $57.00 Buy It Now | Add to watch list |
 Sigma EM 140 EM140 DG Macro Ringlight Flash for Canon E TTL II NEW $379.00 Time Remaining: 4d 7h 23m Bid now | Add to watch list |
 Zeikos Professional Deluxe Soft Box Diffuser $15.89 Time Remaining: 21d 23h 1m Buy It Now for only: $15.89 Buy It Now | Add to watch list |
 SUNPAK GX24 ELECTRONIC CAMERA FLASH W AC ADAPTOR $0.99 (1 Bid) Time Remaining: 2d 4h 24m Bid now | Add to watch list |
 Sunpak Thyristor Auto 522 Electronic Flash Unit Film Photography camera flash $79.00 Time Remaining: 20h 45m Bid now | Add to watch list |
 Really nice VIVITAR 285 Zoom ELECTRONIC FLASH w manual $49.95 Time Remaining: 4d 22h 52m Buy It Now for only: $49.95 Buy It Now | Add to watch list |
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 Canon Speedlite 430EX II Flash for Canon Digital SLR Cameras $279.00 Time Remaining: 7d 19h 48m Buy It Now for only: $279.00 Buy It Now | Add to watch list |
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 Canon Speedlite 188A $19.99 Time Remaining: 21h 24m Buy It Now for only: $24.95 Buy It Now | Bid now | Add to watch list |
 Digital Flash for Sony A230 A450 A500 A550 A850 Camera $39.95 Time Remaining: 3d 2h 15m Buy It Now for only: $39.95 Buy It Now | Add to watch list |
 Honeywell Auto Strobonar 682S Camera Strobe Light Vintage $0.99 (1 Bid) Time Remaining: 4d 5h 14m Bid now | Add to watch list |
 Digital Flash for Nikon D3100 D90 D700 D300s Camera NEW $39.95 Time Remaining: 10d 9h 45m Buy It Now for only: $39.95 Buy It Now | Add to watch list |
 Vivitar Flash LCD VIV PRO 548 GN45 FOR NIKON D5100 D5000 D3100 D3000 D700 $99.00 Time Remaining: 3d 4h 24m Buy It Now for only: $109.00 Buy It Now | Bid now | Add to watch list |
 MINOLTA AUTO 132X ELECTRONIC FLASH W CASE INSTRUCTIONS EXCELLENT+ $9.95 Time Remaining: 1d 3h 4m Bid now | Add to watch list |
 Nikon SB 700 TTL AF Shoe Mount Speedlight USA Warranty 4808 $326.95 Time Remaining: 29d 15h 41m Buy It Now for only: $326.95 Buy It Now | Add to watch list |
 VIVITAR 2800 AUTO THYRISTOR ELECTRONIC FLASH WITH MANUAL $35.00 Time Remaining: 1d 17h 17m Bid now | Add to watch list |
More Great Information on Auto Electronic Flash:
Scenes that will fail your digital camera auto focus by Ziv Haparnas
Digital cameras include sophisticated mechanisms that can automatically figure out the perfect focus for the scene that you are photographing. However even the most sophisticated digital camera can be fooled by scenes that are hard to focus on. Here are a few such scenes and explanations.
There are three main ways to implement automatic focus:
Passive auto focus: This is practically an electronic version of the way in which photographers manually focus on objects. In this mode the digital camera defines areas in the photo on which it will try to focus. These are usually around the center of the photo. The camera captures the picture in real time and analyzes the quality of the focus in these areas. The camera moves its optical components (lenses) back and forth in a search for the optimal focus quality position. This in many ways is similar to the way photographers focus on objects they try to move the lens in one direction, if the focus gets better they move the lens a bit more, if the focus gets worse they move the lens to the other direction. The process continues until the best focus is achieved.
Active auto focus: Active auto focus is a more direct implementation of auto focusing. In theory if you knew the exact optical characteristics of the camera and its lens and the exact distance to the objects that you are trying to focus on you could calculate the exact position of the lens that will result in a prefect focus. Active focus systems measure the distance to the objects in the picture by transmitting an invisible light beam and measuring the time it takes for the beam to bounce back from the objecst. The measured distance is used to calculate the position to which the lens should be moved in order to achieve the best focus.
Combined auto focus: These systems are a combination of passive and active focusing. High end digital cameras support both passive and active methods. In combined mode the camera either chooses which system will work best for any given scene (for example in dark scenes passive auto focusing is not practical) or it uses both systems together (for example using the active system to bring the lens close to the perfect focus and then the passive system to fine tune that focus position.
In some scenes auto focus systems can fail. It is important to understand what these scenes are and it is even more important to understand why the auto focus system fails in these scenes. Photographers that understand how auto focus system works and why it fails can easily identify scenes in which the digital camera would not be able to automatically focus. In such scenes the photographer can use techniques such as manual focusing or focusing on another object in the same distance and panning the camera (while the focus is locked).
Following are a few scenes that will fail the auto focus system and the reasons why:
Low light or dark scenes: Passive auto focus systems need to electronically see the objects in the scene in order to calculate the quality of the focus and find he best focus position. In low light or dark scenes such systems can not work since they are not able to see the objects and to calculate the focus. Some digital cameras solve this problem by shooting a series of flashes toward the objects and having the passive auto focus capture the image and try to find the perfect focus. This solution is very limited. It can only work with objects that are within focus range. In addition such aggressive flash usage is not practical in many scenes for example if you are trying to quietly take a photo of an animal. In low light or dark scenes the usage of active systems is very effective since they do not need ambient light in order to work.
Active systems can fail too. For example they can fail when taking photos of objects that absorb the infrared energy that is used by the camera in order to measure the distance to the objects. They can also fail in scenes with objects that emit infrared energy such as candles or other heat sources. This emitted energy can cause the digital camera active system to measure the wrong distance.
Low contrast objects: Objects such as white walls or blue skies are low contrast objects. Passive auto focus systems rely on the fact that the focus quality significantly changes in relation to the optical components position. This is only true for high contrast objects. Low contrast objects are harder for the camera to focus on since the focus quality does not change much and it is almost impossible for the camera to find a definite best focus position. This can be solved by using an active system that can simply measure the distance to the object or by focusing on another high contrast object in the same distance and then panning to the low contrast object while keeping the focus locked.
Find more on photo printing and photography is on printrates.com - a place about photo prints Ziv Haparnas writes about practical technology and science issues. This article can be published only if the resource box including the backlink is included. Ziv Haparnas is an expert technology writer.
Article Source: http://www.earticlesonline.com/Article/Scenes-that-will-fail-your-digital-camera-auto-focus/122551
what camera will a focal M500C zoom auto electronic flash unit fit.It says 0to 90 degrees angle 20-01-37 on it?
It will depend on what camera it was designed for and the trigger voltage it uses. Every camera maker uses a specific trigger voltage. If the voltage is to high it will fry your cameras electronics.