Canon Speedlite 90EX Flash for Canon EOS M Camera (White Box) New

This is a very good performing, well constructed flash for it's price point. I purchased the 90ex to be a master to my 430EXII Speed light on my 6d and 5d Classic. It functions very well as a wireless ETTL trigger on my EOS 6d, but is a, "No go," on the much older EOS 5d mark1. Although the 5dc does have ETTL and ETTL II, it does not have a set up menu for wireless setup. So, you might want to keep that in mind if you have an older EOS. It does function on the 5d classic, but only flash exposure, flash zoom and flash intensity can be controlled due to lack of a menu on this flash and lack of one on the 5d 1, also AF focus assist, does not work with the 5d I. All of these functions are accessible on the 5d II and 60d or newer EOS's and of course, the eos M. This flash is very effective within 15ft. And with the addition of a diffuser ( not included ) the results are very nice. The 90ex is a great buy because it is both a pretty good flash, as well as a master trigger in a wireless system for newer eos cameras, two things that you would need to spend far more on to achieve. I highly recommend you purchase a diffuser along with this flash, because as with other flashes, the resulting images are far more improved. This would make a great back up for a pro doing portraits away from home/studio or as a first time flash user, or anyone just shooting at closer ranges that wants something a tenth the size of their regular flash. Oh, I forgot to mention, with NMH AAA batteries this flashe's recycling time is blazing and seems to flash forever!

If you have one of the Canon DSLR's with no popup flash, this can be your popup flash. Small enough to put in your pocket, it can give you that little extra light you need without having to carry your big 580 or 600 around. Also, it is a way cheaper alternative to the Canon remote flash transmitter for triggering external slaves.If you have a Canon with a popup flash, this can still be good to have. It doesn't use your camera battery, so it may save you from having to change batteries, or worse, running out of juice. Also, it's a bit higher and farther forward than the popup flash. That can help avoid lens shadow at the bottom of your picture. My 16-300 Tamron lens, for example, on the Canon SL1, works well, but when zoomed to 16-20 mm or so, the popup flash produces a half-moon shadow at the bottom center of the frame. This flash does not, plus it doesn't suck the power out of the little LP-E12 battery in that camera.On the 5D2, this will light as wide as the 24mm just fine. It also triggers multiple Canon EX slave flashes (420, 430, 580, 600) at various ratios, using the camera's menu settings. The Canon ST-E2 wireless transmitter will trigger your slave flashes, too--at a list price of $350. This does it for a fraction of the price--enough reason alone to buy this unit.BTW, as of right now, B&H sells this for $5 less than Amazon, with free expedited shipping. I needed it in a hurry, though, and B&H was on religious holiday, so I bought it here. Still a bargain considering Canon's $149 list for this little flash!

I ordered this unit (Canon Speedlite 90EX) as an accessory for my Canon EOS 5D Mark III, which does not have a pop-up flash. I also have a Canon Speedlite 580EX II that I will use when I need a more powerful flash, so my purpose for buying this unit was to have something small and light, easily portable, that I could mount quickly when I needed a little fill flash or low power lighting. Also, I wanted to be able to use its master flash function occasionally in a wireless setup with my 580EX II as an off camera slave (but usually the main light). I don't do that type of lighting often, so I didn't want to invest a lot of money in equipment just for that.The light output is not quite as strong as the typical pop-up flashes found on entry- and mid-level DSLRs (Guide Number 30'/9m at 100 ISO vs. 39'/12m for the pop-up flash on the 7D, for example; a 23% reduction), but it's about the size of a small bar of soap and weighs nearly nothing even with batteries. So for my purposes it's perfect.Note that it cannot be used as a slave unit in a wireless setup and there are no control buttons other than an on/off switch and the button to lock it on the hot shoe. It is ETTL II compatible, however, and it can be controlled from the camera's menu. It will provide auto-focus assist lighting by emitting a series of low-power stroboscopic flashes (not infrared). It does not cast a shadow in the lower area of the frame when used with my EF 24-105mm f/4L IS USM lens fully extended with hood attached, which extends about 7 inches from the front surface of the camera.I wasn't expecting this Speedlite to do "heavy lifting" for me, but for what it is and what I wanted it to do I am very satisfied.

I'm using this on a 5D Mark II and it provides me two primary benefits: (1) as a small and light travel flash for fill flash situations; (2) as a master flash for a bunch of cheaper 3rd party E-TTL units (particularly, a Yongnuo YN510EX and coming soon a Pixel Mago).I wanted to try off-camera E-TTL for a small home studio, and didn't want to deal with monolites and cables, so I thought this would be the best solution.So far, it is able to control the YN510EX quite well. I had originally planned to get a bunch of the Yongnuo E-TTL slave flashes, but then I saw the Pixel Mago and thought I'd give that a try first.Bottom line, if you have a 5D series, and might have the occasional need for a fill flash this unit is a good buy. Also, if you're looking for an E-TTL master flash, you might want to consider this over the ST-E2 unless you need the range. If you need the range anyway, you'd probably be better off with one of the radio trigger systems.Edit: just compared this to the Pixel Mago in master mode. The 90ex can fire a slave that's behind the camera, whereas the Mago wasn't able to fire the same unit without some adjustment. It seems that this fires the command pulses much better than the Mago. Don't know how other master flashes would fare in this test, but I'm quite happy to use this little flash as my master in a small studio setting.

Worst flash no correct flashing