Product Description

Professional i-TTL Speedlight compatible with Nikon FX and DX format SLRs, and part of the Nikon Creative Lighting System. This powerful Speedlight offers photographers extensive creative opportunities for their flash photography. Three illumination patterns - Center-weighted, Even and Standard - provide total control over flash coverage and it covers a class-leading auto zoom range of 17-200mm in just 1.2 seconds.Advanced features include a booster circuit that enables high-speed recycling using four AA-type batteries and a built-in thermal protection system to warn of excessive heat build up. The SB-900 can automatically detect the presence of a fluorescent or incandescent color filter and transmit this information to the attached camera's white balance setting, and its firmware can be upgraded via the camera body.

Product Details

• Brand: Nikon
• Model: B001BTG3OQ
• Released on: 2008-07-26
• Dimensions: 4.33" h x 5.51" w x 10.24" l, .91 pounds

Features

• High-quality flash for standalone use or as part of a comprehensive lighting system
• Commander mode controls up to 3 Speedlight groups or unlimited individual Speedlights
• 4 wireless channel options; prominent master and remote control switch for wireless operation
• Auto power zoom coverage ranges from 17 to 200mm (FX format) to 12 to 200mm (DX format)
• 3 light distribution patterns; measures 3 x 5.7 x 4.7 inches (W x H x D) and weighs 14.6 ounces

Amazon.com
The SB-900 i-TTL Speedlight leads the Nikon Creative Lighting System by delivering the portability, power, and versatility to support any photographer's creative lighting imagination. The SB-900 works as a wireless standalone flash, or you can use it as a commander or wireless remote light source. In commander mode, the SB-900 controls up to three remote Speedlight groups and an unlimited number of compatible Speedlights, with four wireless channel options helping you manage wireless conflicts in multiple photographer environments. The flash also offers streamlined controls and menus, including a rotary select dial that sets key flash functions quickly, along with a prominent master and remote control switch to simplify wireless operation.

Photographers working on zoom photos will appreciate the SB-900's expanded auto power zoom coverage, which ranges from 17 to 200mm in the FX format to 12 to 200mm in the DX format. Photographers also have the choice of three light distribution patterns: standard (for general illumination), center-weighted (for portraits), and even (for groups or interiors). Finally, the SB-900 automatically identifies mounted color gel filters and adjusts the camera's auto white balance setting (available with select Nikon digital SLR cameras). Other details include automatic FX/DX format identification; user-friendly firmware updating; flash tube overheat protection; and a drip-proof mounting foot cover.

Technical Specifications

• Guide number: 34 meters/111.5 feet (ISO 100), 48 meters/157.5 feet (ISO 200)
• Electronic construction: Automatic Insulated Gate Bipolar Transistor (IGBT) and series circuitry
• Flash exposure control: Slow sync; red-eye reduction in slow sync; front curtain sync; rear curtain sync; rear-curtain slow sync; auto FP high-speed sync; FV lock flash
• Lens coverage: 17 to 200mm (FX format, automatic mode); 12 to 200mm (DX format, automatic mode); 12 to 17mm (FX format, automatic mode with built-in wide-angle panel deployed); 8 to 11mm (DX format, automatic mode with built-in wide-angle panel deployed)
• Bounce function (tilt): Flash head tilts down to -7 degrees or up to 90 degrees, with click stops at -7, 0, 45, 60, 75, and 90 degrees
• Bounce function (rotate): Flash head rotates horizontally 180 degrees to the left and right, with click stops at 0, 30, 60, 90, 120, 150, and 180 degrees
• Minimum recycling time: 4 seconds with alkaline-manganese (1.5 volts); 4.5 seconds with lithium (1.5 volts); 3 seconds with Oxyride (1.5 volts); 2.3 seconds with Ni-MH (2,600 mAh)
• Flash duration: 1/880 second at M1/1 (full) output; 1/1,000 second at M1/2 output; 1/2,550 second at M1/4 output; 1/5,000 second at M1/8 output; 1/10,000 second at M1/16 output; 1/20,000 second at M1/32 output; 1/35,700 second at M1/64 output; 1/38,500 second at M1/128 output
• Required power source: 4 AA-type batteries in the following types: alkaline-manganese (1.5 volts), lithium (1.5 volts), or Ni-MH (1.2 volts)
• ISO range: 100 to 6,400
• Optional power supply: SD-9 high-performance battery pack, SD-8A high-performance battery pack, or SK-6 power bracket unit
• Ready light: Yes
• Minimum number of flashes: 110 with alkaline-manganese (1.5 volts); 230 with lithium (1.5 volts); 190 with Ni-MH (2,600 mAh)
• Wireless flash modes: Off, master, master (repeating), remote, and SU-4
• Wireless communication channels: 4
• Wireless groups: 3
• Dimensions: 3 x 5.7 x 4.7 inches (W x H x D)
• Weight: 14.6 ounces
• Supplied accessories: AS-21 Speedlight stand, SW-13H diffusion dome, SJ-900 color filter set, SZ-2 color filter holder, SS-900 soft case

Customer Reviews

Thermal shutdown - fixed?
I have an SB900 and agree with all the positive comments posted in other reviews, however I want to challenge those who are posting stories about thermal shutdown to supply some additional information about what situations really cause the flash to shutdown.

I've been using my SB900 for several months now, and I've never experienced a problem with the unit shutting down, so I thought I'd try a simple test.

I installed a set of brand new lithium ion batteries in my SB900, set it to full power manual mode, and hit the flash button manually as soon as the ready light lit - that's about one full-power shot every 1 or 2 seconds. I did this until the batteries were drained (that is, until it got to be about 10 seconds between flashes - that's a few hundred full-power flashes in a row).

Never once did the thermal protection circuit kick in...in fact, the temperature display barely moved for the first 50-100 shots, and throughout the test, even when I could feel the batteries getting warm, it never went much above the 50% mark. My test was indoors at an ambient temperature of about 70 degrees.

I tried other settings - repeat flash, flash with my D3 firing at maximum continuous speed, etc. But I could never even come close to driving the flash to shutdown. So perhaps Nikon fixed the issue, I'm just plain lucky - or it has to do with the type of batteries or maybe other accessories used.

With this issue out of the way, I'm able to give the unit an unqualified 5 star rating as it's simply the most capable and easy to use unit I've ever owned.

Thermal Shutdown is for the Birds!
Fellow Wedding Photographers! Please listen! The SB-900's thermal shutdown is a very serious problem for us. I received my SB-900 last Thursday and shot a wedding on Saturday. YES! The thermal shutdown Grinch got me! Even after I read the reviews complaining about the problem, I rationalized it by thinking, well I probably don't shoot as fast as they do. WRONG! It got me after just 6 full power exposures!

As background, I've used a SB-800 for a couple of years shooting fairly rapidly and never had a problem with overheating. I likely had overheating, but the SB-800 flash withstood the stress. Not so with the SB-900's thermal shutdown feature. Reluctantly, I'm turning "thermal shutdown" OFF in the setup menu. Why? Because I love the SB-900 otherwise! It's a wonderful step above the 800. But now I may risk warranty repair problems should something happen.

I hate being put into that position by Nikon! I've been loyal to the brand since 1964's Nikon F days. Hopefully Nikon will come up with a cure, especially since the 900 has the ability for it's software/parameters to be remotely updated.

In the meantime, wedding photographers, you're taking a big chance the unit will shut down just when important shots happen, unless you disable the thermal shutdown protection mode.

I'm still rating the SB-900 as 4 stars, since all else seems fantastic. ATTN: NIKON! Please fix this problem!

Lots of misinformation in other reviews of this flash
I can't believe the amount of misinformation presented in customer reviews for this product.

First of all, it is true -- Nikon added a thermal cut-off that allows the customer to be absolutely certain that the flash never overheats. If that sensor is turned on, the flash can't shoot fast enough or often enough for professional usage -- particularly for weddings. Try shooting the bridal party introductions at a reception, for example. Even if you limit yourself to two flash pops per couple, by the time the third couple is walking in the door, the thermal shutdown will kick in, and you'll be swearing at the thing.

However, you can simply turn the sensor off. In my experience, the flash is no more delicate than previous Nikon and Canon speedlights. Every Nikon and Canon flash has a duty cycle carefully described in their manual that virtually all professionals ignore and exceed, and yet -- most of us get years of usage from the flashes with no problem. I can't tell you the number of times I've taken batteries out of my flashes that were simply too hot to hold, and the flash housing was burning hot too -- but the thing just kept on working. So I think, if you turn off the thermal cut-off, the SB-900 will behave just like earlier flashes like the SB-800, in terms of overheating.

So the simple answer is. . . if you turn off the thermal sensor, the SB-900 is at least as useful as a professional tool as it's predecessors -- no more, no less susceptible to overheating. I don't know why Nikon and Canon are so conservative in the duty-cycle ratings of their flashes, but I've talked with dozens of fellow pros over the years -- we all abuse the flashes, and we rarely have issues. I'm not saying that it's not possible to abuse these speedlights to the point where they will die -- I'm just saying I have used them professionally and repeatedly put hundreds of very fast, high-power pops on them, significantly exceeding the rated duty cycle, and have yet to kill a Canon or Nikon speedlight.

As far as batteries go, Nikon fully supports and recommends the use of NiMH batteries -- both normal and Eneloops. The chart in the manual shows NiMH as being the best combination for a good number of pops and the shortest recycling time. Only the expensive Lithium non-rechargeables have better battery life, but they have a recycle time almost double NiMH. Alkalines give the smallest number of pops, and have the second longest recycle time.

So fear not -- the SB-900 is the nicest speedlight I've owned yet -- I have two of them, and I like it far better than it's predecessors. Turn off the thermal sensor as soon as you take the flash out of the box, load it up with Eneloop batteries, and you will experience flash nirvana.

Finally, I highly recommend the SD-9 accessory battery pack. Load it up with Sanyo Eneloops, and you can easily shoot an entire wedding (actually, probably two weddings) without swapping batteries, while enjoying the fastest recycle time possible with this flash.