Awesome Power! I shot a reunion using Portra 160 NC and at 45 feet with a group of 70 people the exposure was perfect. I guaged this by the number of reorders as well as my on opinion.
Is it truly automatic? Yep. Is it truly manual? Yep. And everywhere in between. The number of shots per 4 AA's is great and it is so powerful that when fired you can actually hear the "POP."
Used wireless it is flawless. Operates up to 16 meters and has up to 125 degree bounce!

I wish they made a PC cord in addition to the wireless mode just for "old times sake."

What can I say? One is awesome, two and you can slave/bounce/key and fill. You can also bounce out of an umbrella. And because of the wireless function it can be 25 feet above your head and still perform.

Customer Service

I have not had to use them.

Similar Products Used:

Canon Speedlights

Pretty much a complete flash.
Very powerful.
Multiple features.
Easy to use.

Head does not swivel.
TTL ONLY.
Less robust than the primes.

Good flash, good quality/price, powerful and versatile.
Lots of features: Hi-Speed sync, FE lock, Slave function, Strobe, 2nd curtain sync.
Worth trying it.

Customer Service

none needed yet

Similar Products Used:

SB 24

Great features with very resonable price.

Head does not swivels.

Great flash. High speed, Wireless TTL, Strobe, LCD display Fast recycle time.
On my Minolta XTSi it has performed beautifully TTL exposures is very accurate. You get great performance at $100 less then
Minolta's 5400HS flagship flash. Get one.

Customer Service

No needed

Similar Products Used:

None

Supports E-TTL in Canon. Hi-Speed sync, FE lock, Slave function, Strobe, 2nd, curtain sync, etc.

Zoom head range is only 28-80.

Excellent, fully dedicated flash. I believe the Nikon version supports their advanced flash system too! For just $10 more than the 380 EX, you get more power and features.

Customer Service

Friendly and helpful. Called and asked them a question before I bought!

Similar Products Used:

Canon 380 EX, Canon 540 EZ

E-TTL metering with canon Elan II and Rebel 2000, FP flash(high-speed sync), strobe affect, full-1/16th manual power...etc.`

Batteries are limited to Alkaline and NiMh, no packs available. Zoom head is only 28-80, unlike the 380EX which is 24-105; but the manual zoom feature means that you can zoom the flash manually with non-canon lenses, which is not possible on the 380EX.

This is the best flash unit I've ever owned. It's versatility is its best feature. With E-TTL and auto-zoom, its point and shoot simple. With manual to 1/16th and multi channel slaving, its as complex as you want it to be. Hands down the best deal for the money in a brand specific TTL autoflash.

Customer Service

not needed

Similar Products Used:

380EX

multi-functional

doesn't look decent

I am a Nikon user.
This item sounds good but its design was poor. You can not turn it off. Even though you switch it to off, you are still be able to change the ZOOM, test the flash and making other settings. Besides, the "OK" light won't work until you turn on the LCD backlight. You even need do this in the daylight. One word, this item isn't worth the money.

Customer Service

N/A

Similar Products Used:

Sunpak 433AF

Full functions with EOS 50E, with manual controls. Something you can't get from Canon's 420EX.

Shame the preflash doesn't work with the CF4 set to 1 or 2, otherwise it's perfect for the price. Seem a bit more flimsy than the 430EZ though

The best bang for the price.

Customer Service

Haven't tryed yet

Similar Products Used:

430 EZ, 420EX, 380EX

Good build quality for the price.

Lot of useful features and its fully manual.

Good output GN142/Ft(GN43/m)ISO100.

Wireless.

Flash Head Doesnt rotate horizontally, but how often are you going to use that. Go wire less if need be. Zoom head could needs to go higher than 80mm (Come on Sigma thats not hard to do)

A good flash with all of the functions most people need. Rear curtain sync is always useful and not available on the Canon 340. E-TTL metering is availble with this flash which is great if you have a EOS 3 or a 1V but if you have these cameras use should be able the afford the accessorys. You dont put Dunlop retreads on your new Ferrari, afford the car, afford the tires. This is a similar flash to the Canon 540 in terms of specs. The GN for the 540 is slightly higher at 54/177 (ISO 100, m/ft) than the Sigma but the price is almost double. Stand a few of meters closer to your subject and that problem is solved and you would have saved money in the process. The big clear LCD screen on the back of the flash is easy to follow and has a blue backlight if needed. Basically you are getting a flash thats similar to Canons 540 flash for almost half the price, ties in well with E-TTL metering and is fully manual if needed and wireless. Theres room for improvement but its not to shabby so far.

Customer Service

None yet.

Similar Products Used:

SunPack 4000AF (broken straight out of the box)Canon 540 and 550.

Addition info for review below this one.

None

In addition to my review below I discovered that E-TTL metering is only available in the Canon Elan II, Elan IIE, Rebel G, IX and the IX Lite. High Speed Sync (FP Flash), Flash Exposure Lock (FEL) is also only available on these cameras. Sigmas website does not have alot of info on this flash so I'll quote a few things from the manual. The camera can be fully manual if needed, power range is 1/1, 1/2, 1/4, 1/8, 1/16. If you use a motor drive in 1/16 mode the flash can fire upto 8 times, 4x in 1/8, 2x in 1/4 and 1x in 1/2 and 1/1 each charge. Manual operation of the zoom head is available as well 28, 35, 50, 70, 80mm and auto. There is an optional wide panel for 18mm to 28mm lenses. There is also a Multi Flash option so the subject's series of movement will be exposed in one frame in 0.1, 0.2, 0.3 0.5 or 1.0 sec increments. Slow Sync and Second Curtain Sync as well. None of these modes above can be used on the Canon Eos 700, 750 or 850 cameras. Flash exposure compensation is available as well (not available with EOS 620, 650, 700, 750, 850 and 1000/Revel series of cameras. Thats about it. The very first time I used this flash it went totally crazy and would not turn off and each time I pressed a button and it did the same thing as the button next to it. I removed the flash and removed the batteries to reset it. Worked a treat and has never ever failed me since then. Value rating I give is a 4 out of 5. If you had a Elan II, Rebel G, IX etc I would give it a five. Other wise not bad.

Similar Products Used:

None