The VS-510N Wireless iTTL Shoe Mount Flash from Bolt is a dedicated flash for use with Nikon DSLR cameras. The VS-510 features a guide number of 141 at ISO 100 and an adjustable tilt head with five positions: 0 to 90°. You can also twist it to the left up to 120° and to the right up to 180°. It covers a 24-105mm range (in 35mm full frame format) and also offers rear curtain synchronization for shooting at slower shutter speeds. The included mount allows you to attach it to any 1/4"-20 screw for flat surfaces, tripods or stands.
The VS-510 has an autofocus assist for low-light photography, and an automatic power-saving function that turns the flash off when its inactive. It is powered by four AA batteries (not included), with a flash duration between 1/1000 and 1/20,000 of a second.
Mount: Shoe
Guide No.: 141.08 (43 m) ISO100 at 50 mm position
Exposure Control: Manual/TTL
TTL Dedication: Yes
Bounce Head: Yes, +0° to +90°
Swivel Head: Yes, 180°
Coverage: 35 mm (Full frame)
Zoom Head: Full frame: 24 mm - 105 mm
Off Camera Terminal: None
Recycle Time: Approximately 0.5 seconds - 9.0 seconds
Flash-ready Indicator: Yes
Compensation: <span class=notSpecfMon>Not Specified By Manufacturer</span>
Wireless Communication Channels: 4 Channels
Wireless Groups: 3 Groups
Power Source: 4x AA Alkaline, Lithium, Rechargeable Ni-MH Batteries
Dimensions (WxHxD): 2.6 x 3.9 x 4.7" / 6.5 x 10 x 12 cm
Weight: 9.17 oz / 260 g Without batteries