Speedlight is the brand name used by Nikon Corporation for their photographic flash units, used since the company's introduction of strobe flashes in the 1960s. Nikon's standalone Speedlights (those not built into the company's cameras) have the SB- prefix as part of their model designation. Current Speedlights and other Nikon accessories make up part of Nikon's Creative Lighting System (CLS), which includes the Advanced Wireless Lighting, that enables various Nikon cameras to control multiple Nikon flash units in up to three separate controlled groups by sending encoded pre-flash signals to slave units.
Nikon's competitors like Canon and Ricoh use the similar name Speedlite for their flashes. Both names indicate that strobe flashes produce much shorter and more intense bursts of light than earlier photographic lighting systems, such as flashbulbs, or continuous lamps used in some studio situations.
Nikon's Speedlight units are: (Update September 15, 2014)
- SB-1 (discontinued)
- SB-2 (discontinued, circa 1970)
- SB-3 (discontinued, circa 1970)
- SB-4 (discontinued, circa 1971)
- SB-6 (discontinued, circa 1965)
- SB-7E (discontinued, circa 1974)
- SB-8E (discontinued, circa 1975)
- SB-9 (discontinued, circa 1978)
- SB-10 (discontinued, circa 1978)
- SB-E (discontinued, circa 1979)
- SB-11 (discontinued, circa 1980)
- SB-15 (discontinued)
- SB-16 (discontinued)
- SB-17 (discontinued, circa 1983)
- SB-20 (discontinued)
- SB-22 (discontinued)
- SB-23 (discontinued)
- SB-24 (discontinued)
- SB-25 (discontinued)
- SB-26 (discontinued)
- SB-28 (discontinued)
- SB-28DX (discontinued)
- SB-50DX (discontinued)
- SB-80DX (discontinued)
- SB-400 (discontinued)
- SB-600 (discontinued)
- SB-800 (discontinued)
- SB-900 (discontinued)
Models compatible with the latest I-TTL System
Nikon's latest smaller shoe mount flash unit which replaces SB-400. It is less powerful than SB-400 and uses AAA-size batteries.
(GN 69 ft, 21 m @ 27 mm) The SB-400 is a lightweight and very compact shoe-mount flash unit, powered by only two AA-size batteries. It uses a 40mm xenon tube. Despite its small size, SB-400 is a very capable flash with a variable angle 'bounce' head (up to 90 deg.). The head lacks tilt movement which is common to larger flashes.SB-400 cannot be used in slave or master mode in Nikon's CLS system. It weights 127g (without batteries) and is mostly made in China.
(GN of 24m at ISO 100)
The Nikon SB-500 is a lightweight and very compact shoe-mount flash unit with coverage for a 24mm lens on an FX camera or a 16mm lens on DX camera and combined with 100 lux LED for video light, powered by only two AA-size batteries. SB-500 is a very capable flash with a variable angle 'bounce' head (up to 90 deg.) and rotates 180-degrees for soft lighting effects. The flash is part of Nikon's Creative Lighting System (CLS) with two-group/two-channel control and features the intelligent-TTL (i-TTL) exposure mode.
(GN 98 ft, 30 m @ 35 mm)
Mid-range model - weighs approximately 300 g without 4 AA batteries
The Nikon SB-600 is a flash made by Nikon for their digital and film single-lens reflex cameras. The SB-600 can mount to any Nikon camera with a four-prong hotshoe. The SB-600 cannot control other flashes through a wireless connection; however, a flash commander can control it wirelessly. The SB-600 is part of Nikon's Creative Lighting System (CLS) and features the intelligent-TTL (i-TTL) exposure mode. This model is the most compatible unit with older model film and earlier digital cameras like Nikon, F5, F6 and D100 as well as all recent cameras.
(GN 92 ft, 29 m @ 35 mm)
SB-700 is an upgrade to the older SB-600 with refined design in both electronics and mechanics. It is a more reliable and durable flash in many ways than the SB-600. Professionals consider the unit as more like a compact version of SB-9XX line supporting both master and slave functions. It features a newly designed interior zoom head and locking shoe section which is identical to SB-900 and SB-910 models. SB-700 shares similar features and menu system of SB-900 and SB-910 as well. The SB-700 is part of Nikon's Creative Lighting System (CLS) and features the intelligent-TTL (i-TTL) exposure mode. It weighs approximately 360 g without 4 AA batteries. It is mostly made in China. Announced September 2010 and available since October 2010.
(GN 125 ft, 38 m @ 35 mm)
SB-800 is a very high quality professional model which weighs approximately 350 g without 4 or 5 AA batteries (optional fifth battery for quicker recycling) The Nikon SB-800 is a flash made by Nikon based on the earlier SB-80DX model for their digital and film single-lens reflex cameras. It has electronic interfaces for through-the-lens (TTL) automatic exposure and automatic zoom to match lens focal lengths from 24 to 105 mm (35 mm equivalent), plus 14 and 17 mm with the use of the built-in diffuser or 14 mm with the external Nikon Diffusion Dome, as well as film speed in the range from ISO 3 to 8000 (25 through 1000 in TTL mode with film cameras). Its guide number is 38 meters / 125 feet at ISO 100 and 35 mm, with a maximum range of 58 m when adjusted at 105 mm. 
The SB-800 is part of Nikon's Creative Lighting System (CLS) and features the intelligent-TTL (i-TTL) exposure mode. It is compatible with all SLR cameras (such as the D2H, D2X, D3, D40, D50, D60, D70, D80, D90, D200, D300/s and F6), it can be used as master commander as well as remote flash unit within a CLS wireless lighting setup. It is one of the high-end units for Nikon which features metal joints and supports inside the body. It is sturdier than newer models like SB-700, SB-900 and SB-910 which are prone to impact breakage due to non-reinforced plastic shoe mount bases. All SB-800 units are made in Japan.
By many professionals it is considered as the most advanced flash unit when compared to its compact size. The Speedlights.net says that "for many professional photographers this flash is still the best hot shoe strobe out there today" with smaller size than the successor SB 900, but has bigger Guide Number 38 over 34.
It features the following unlike the newer units:
- Single piece metal foot (borrowed from SB-80DX)
- Compact body design
- 5th battery attachment option
- High GN power (the same as SB-80DX)
- Dedicated modeling light button
SB-900 (discontinued) and SB-910
(GN 111 ft, 34 m @ 35 mm) SB-900 is a larger professional model released 30 June 2008, weighs approximately 415 g. It is a flash made by Nikon for their digital and film single-lens reflex cameras, released on June 30, 2008. It has electronic interfaces for through-the-lens (TTL) automatic exposure and automatic zoom to match lens focal lengths from 17 to 200 mm (35 mm equivalent) and 12 to 200 mm in Nikon DX Format. Over SB-800, SB-900 features:
- Larger dot matrix LCD screen
- Silent charging with upgraded thin transformer and micro-controller ICs
- Dedicated power and master/slave selector button
- Jog dial menu navigation
- Newly designed and tighter shoe lock mechanism
- Larger Flash head with more sensors for various attachments
- Newly designed inner zoom head unit with larger distance
- Three element front AF focus assist LEDs
- Newly designed battery door (with push button lock addition on SB-910 similar to SB-700)
The SB-900 is part of Nikon's Creative Lighting System (CLS) and features the intelligent-TTL (i-TTL) exposure mode. With compatible SLR cameras (such as the D40, D40x, D50, D60, D70, D70s, D80, D5000, D90, D200, D300, D700, D7000, D2h, D2hs, D2x, D2xs, D3, D3x and F6) can be used as master commander as well as remote flash unit within a CLS wireless lighting setup.
As of November 2011 the SB-900 was replaced by the SB-910 which is technically very similar to the older model. There only are minor changes like the push button on the battery lid, semi transparent function buttons, redesigned soft case, different accessories and re-adjusted thermal cut off circuit to prevent premature shut downs. In terms of power level, looks, inner mechanics and PCB design both units are identical. All SB-900 and SB-910 units are made in Japan.
- R1C1 Wireless Close-Up System
- SB-R200 Wireless unit (GN 33 ft, 10m @ 24mm)
- SU-800 Wireless Speedlight Commander - no flash, controls other speedlight units
- "Nikon announces SB-500 Speedlight for stills and video". September 12, 2014.
- "Autofocus Speedlight SB-800: Instruction manual". 24 March 2011. p. 27. Retrieved 28 August 2012.
- "Autofocus Speedlight SB-800: Instruction manual". 24 March 2011. p. 31. Retrieved 28 August 2012.
- "Autofocus Speedlight SB-800: Instruction manual". 24 March 2011. p. 120. Retrieved 28 August 2012.
- "Nikon Speedlight SB-800 Flash". Retrieved 31 October 2013.
- Wireless flash setup from momentcorp.com
- Flash products from Nikon USA
- Speedlight comparison chart from bythom.com
- Creative Lighting System overview
- Creative Lighting System review
- Overview and detailed description of all Flashes from SB20 - SB800
- Comparison: Nikon Speedlight SB-700 vs. Nikon Speedlight SB-600 review
- Nikon Speedlight SB-700 vs. SB-900: overheating (thermal cut-out) test
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