cheap flash

[BobF]

For reliability and flexibility, Sigma flashes are hard to beat. I've been using them for years, first with Canon, now with Nikon and am very pleased with them. Bag the cheap crap on evilBay and go with a known quantity.

[Topcat999]

I agree with Bob on this one. I have used sigma for a while. Good and cost less.

[AstroImager]

Dealkiller. Any electronics that overheats batteries has something inherently wrong with it.

Just FYI, the Yongnuo flashes don't overheat batteries any more than any other flash, including the top-end Nikons or Canons. The difference is, the Nikons & Canons (and some others) have a built-in temperature circuit that will shut the flash down when it starts to overheat, turning it temporarily into a warm brick...while the YNs (and others) don't. They'll happily let you fire away until it gets way too hot, and bad things can happen. That missing temp-sensing circuit is one reason for the price difference
I've used (and tested) the YN flashes -- unless you're going to be doing full-power pops continually for 20 minutes, you probably won't have any overheating issues. They're a very good bargain

Paul

[julio_gyn]

I found a video, and they guy was firing the flash at full power until the flash stoped. The battery didn't overheat, the built in sensors stopped the flash to fire when it was 'hot'. I never did it to my canon flash, I may try sometime and see what is going to happen...