Average Reviews:
(More customer reviews)First of all if you want a general purpose, reliable, long distance remote trigger, you really should look into Radio Popper, Cactus, PovertyWizard, and such. Don't get me wrong, there's a place and time to use RP, Cactus, PW, and the SU-800. They all have their niches. For example when I go shoot outdoors where I place the flash units far away from the camera, I'll use the PW-- you get superior range over the SU-800, and good reliability. However it is very expensive, and the older PW units don't have TTL so if you don't set your power setting correctly the first time you end up having to walk to/from different flash units to change their power setting. I've not used Radio Popper myself but I've heard good things about it since it preserves TTL functionality. As for Cactus, it's very cheap, but also has limited range and is not as reliable as the other alternatives. In all cases, these are 3rd party vendor solutions with yet one more piece of equipment (battery, configuration, etc) to worry about, and one more point of failure in your day-to-day shoot.
On the other hand... if you're shooting indoors, or doing on-site portrait work, this is THE remote unit to use. In the literature, the range of this commander unit is 66 feet. However, in practice, I've seen it vary between 30-50 feet, and almost always line of sight. If I'm indoors, I prefer this unit because it is very light and you will not feel any extra weight on your camera. So despite the lack of range, I still love the SU800. It offers a fully integrated Nikon CLS solution, and is simply easy to use when you do portrait work. i-TTL is built in with 3 channels so you can adjust power (or not have to think about power at all when you do portrait work). Sure, the built in commander flash in D80/90/200/300/D700 is nice, but they only have 2 channels, and frequently the pre-flash from those cameras makes people blink excessively. On the SU-800 there is no preflash so you can take pictures of people and pets without bothering them with the preflash, and you end up having more usable shots. In addition, this is a must have accessory if you're doing very low light, no flash, walk-around shooting using SU-800's discrete red light focus beam. Yes you can achieve the same on the SB-800/900 by turning off flash and only enabling the red AF-assist, but they weigh a lot more, and make the camera very bulky. Lastly, this is a nice item to have with the R1C1 kit, though not absolutely necessary since you can use the on-camera flash, and macros aren't usually affected by the on-camera flash.
The SB-800 and SB-900 have commander units too, and when you point them towards other flashes in the commander mode, the range is about 50% greater than that of SU-800: I've gotten about 50 feet of range with the SU-800, and about 75-80 feet of range with the SB-800 and SB-900. Clear line of sight (from the commander to the optical receiver) is the key. The down-side to using SB-800/900 as commanders is that they weigh a lot more, and they emit pre-flash making people blink more than necessary.
I'm giving it 4 stars because it does extremely well for what it was designed and built for-- indoor portrait commander device. If Nikon came out with a longer range radio unit, I'd give it 5 stars, but that was not what the SU-800 was originally designed for. For outdoor strobists, I still recommend radio signal commander/receiver alternatives, at a price of course.
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SU-800 Wireless SpeedlightThe multi-functional Nikon SU-800 unit forms the nerve centre of any i-TTL multiple flash-lighting situation.Capable of metering and triggering groups of remote Speedlights in the Nikon Creative Lighting System, a one-touch switch fully automates accurate exposures of small subjects instantly. Manual adjustment of the balance of each units output is simple to control through the comprehensive LCD panel.When using i-TTL compatible Nikon digital SLR cameras and Speedlight, user can divide the Speedlight units into three groups and control the flash output independently for each group Features a Commander function that can trigger wireless remote flash (SB-800, SB-600, or SB-R200) units without a master flash unit One-touch switching between close-up and Commander modes Two types of close-up operation: Dual-light close-up flash & Triple-light close-up flash.
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