The VS-510P Wireless TTL Shoe Mount Flash from Bolt is a dedicated flash for use with Pentax & Samsung DSLR, mirrorless or point-and-shoot 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 stand allows you to set the flash up on a flat surface, or to attach it to a tripod head, light stand, or clamp that has a standard 1/4"-20 mount.
The VS-510 has an autofocus assist for low-light photography, and an automatic power-saving function that turns the flash off when it's inactive. It is powered by four AA batteries (not included), with a flash duration between 1/1000 and 1/20,000 of a second. The flash supports high-speed sync up to a quick 1/8000 sec for shooting outdoors at wide apertures and fast shutter speeds. It also has rear-curtain sync.
Note! Although this model is compatible with Pentax and Samsung's SLR TTL metering systems, the current series of NX cameras use a different TTL system.
141.08' (43 m) ISO100 at 50 mm position
164' (49.99 m) ISO100 at 105 mm position
|Bounce Head||Yes, +0° to +90°|
120° left, 180° rightclose
|Coverage||35 mm (Full frame)|
|Zoom Head||Full frame: 24 mm - 105 mm|
|Off Camera Terminal||None|
|Recycle Time||Approximately 0.5 - 9 seconds|
|Flash Duration||1/20000 - 1/1000 sec|
Method: Optical pulse
Distance: Up to 33' / 10.06 m
|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 10.0 x 12.0 cm|
|Weight||9.17 oz / 260 g Without batteries|