bought this to go with the Yongnuo YN-568EX II (Canon) Speedlite and it fits perfectly & does not tend to slip off like many other diffusers of this type that I have used. I recommend it for the above flash.

This flash is very powerful and extremely versatile. Especially for the price. If you are a hobbyist as I am this is the flash for you. If you do photography for a living, the build may not be robust enough for you.

I bought this so that my wife could have a powerful bounce flash on her camera body while I still had my AF540FGZ. She is using a K-01, so she would not be using it as a wireless slave for the built-in flash. For her purposes, it works flawlessly.

• +

  Excellent power, price, P-TTL on camera, sturdy lockable bounce, good for third party diffusers

• -

  Menus confusing, WA diffuser broke, Battery door, Quirky wireless

Very good flash. I'm using it on my Nikon D 750 and the result is perfect. A little bigger and heavier than a similar Nikon flash, but for a much better price.

I am pleased with this flash. Easy to use. There are a lot of functions, I need to learn. However, for the purpose I neeed it for, it did the job. I would consider getting another flash of this quality.

The Sigma EF-610 DG Super is a great value, having the power and features of flashguns twice the price. A couple of minor improvements would make this very good flash into an excellent one.

• +

  Powerful, Wireless PTTL and HSS, great features for the price

• -

  Controls could be more simple, manual is nearly worthless

Not much to say other than I was very glad that it actually fit my Lumopro 180 speedlight. Just as nice as the one on my Nikon speedlight.

This flash is amazing! I think it's the best purchase I have ever made... It is a very powefull flash, durable, nice zoom range, nice optical slave, it can be used as a master flash, it has a stroboscopic function... so you can be pretty creative with this flash! Super cheap and very very goood!

I have had this lash over a year and had no problems with it. Always fires, reliable, good light. Without the use of a good manual to help support the flash, it requires some experimenting to find settings and the controls could be a a more Pentax level of intuitiveness.

• +

  Reliable, well built, battery life

• -

  manual, controls, battery door complicated

While this flash can act as a ttl master using IR triggering, (4 chan, 3 groups) using Canon's protocol, it won't allow the same level of control like a Canon flash would from the camera menu (5dmkkII). The control screen is a bit odd but learnable.