As has already been said here so much about the 430EX II, I just wanted to compare it against the 430EX as I own both flashes. I've just got to reduce the second flash to the drop shadow. This works with the EOS 7D in slave mode wonderful. Let's start at the bottom: the 430EX II a metal foot the 430EX has a plastic base but no devaluation brings with it still holds as good as on the first day, the 430EX I own quite a few years. The metal base is even a little longer and also protrudes slightly out of the accessory shoe which is also so in the manual. Mounting: the 430EX has a tensioning wheel, the 430EX II a clamping lever, which I like better because the tension wheel sits the flash fixed properly. During the clamping lever, the flash moves something in accessory shoe but the most important is lightning does not fall on the camera. The resolve of the clamping lever is a little fiddly but meantime it has become accustomed. Slave mode: The 430EX has an additional slave-off switch, the 430EX II I have the flash on the SW in the slave mode switching. Both flashes can I SW flash on the camera taxes but only when the flash is attached. Although I but the 430EX II flash mode, Shutter sync., Bel. Can adjust correction, E-TTL II and Zoom, and I. On the camera to access the settings of the flash C.Fn When 430EX I can only Bel. Correction and E-TTL II setting and no access to the C.Fn settings on the camera did, I can do only on the flash itself. When 430EX is heard when switching the charging of the capacitors is the 430EX II is no longer the case. Both flashes come in a nylon bag ago which in not discriminating. It's still the same material and the same processing. Given in two mini tripods is a thread for receiving a as large tripod. The SW is both actually the same with a few exceptions see slave control. It can be anything from E-TTL to manual flash setting everything. Although I prefer the manual adjustment because I can be more creative there. Conclusion: The 430EX is already Wertig, the EX II is at least equal to 430. The SW is a bit better. Both are but Excellent as a slave. Strong buy recommendation. Canon Speedlite 430EX II flash (guide number 43)