I already have a 580EXII and an older 420EX, and wanted a second 580EXII - but they have disappeared (now that Canon has withdrawn the 580EXII from sale and offers only the better and much more expensive 600EX).
I just thought I'd share some experiences having just purchased a Chinese-made 'compatible' speedlite.
I didn't want to pay too much, and the economics (AUD199) were compelling so I thought I'd give it a go.
The unit in question is the Yongnuo Speedlite YN565EX
- and claims to be compatible with and largely equivalent to the Canon Speedlite 580EXII when used on qualified cameras (e.g. a 50D like mine).
It's made in China (allegedly by the people who made the 580EXII for Canon under contract, or so the local sales agent told me).
I suspect that it may be marketed under different names in other countries.
Here's my observations.
- Yes, it's (mostly) compatible. There's a Canon version and a Nikon version
- You can drive the C.Fn and operational functions like a 580EXII from the menu of a compatible camera like a 50D or later
- It works OK as a wireless (infrared) slave to a 580EXII or STE2
- The metering and controls are much the same, except that it's ETTL not ETTL2 - at least the bit that's not the same is the lack of high-speed flash sync
- It lacks the nice rubber weather sealing on the hotshoe mount that exists on the 580EXII, as well as not having the lever-latch for hotshoe
- One bonus - you get a manual that's in Chinese as well as English!