The Nissin Di622 Mark II flash gun, which was announced at Photokina in September 2010, improves on an earlier model by adding Wireless TTL remote capabilities and the ability to be used as a slave flash with multiple flash units (including studio flash systems). This model sits in the middle of the Nissin flash range and is for DSLR cameras only. Its light output, coverage and controllability of the flash head make it ideal for photo enthusiasts.

Designed to illuminate the same field of view as a 24-105mm lens, it can be extended to 16mm coverage with the wide angle diffuser, which pulls out from just above the flash head. The guide number in metres (which represents the maximum distance covered by the flash light)at ISO 100 ranges from 25 at 24mm to 35 at 50mm and 44 at 105mm, which is as much as most non-professional photographers will require.

The distribution of the light is automatically adjusted for the lens focal length by a built-in stepping motor that synchronises with the lens movement as the focal length is changed. Users can also choose from one of the six variable powers to suit different types of subjects.

Compatible with Canon’s E-TTL, E-TTLII and Nikon’s i-TTL digital through-the-lens flash systems, it is straightforward to operate. Just clip the clash onto the camera’s hot-shoe, switch it on and you’re ready to shoot. The light from the flash is controlled automatically by the camera and the built-in electronics in the Di622 Mark II.

The Di622 Mark II is supplied with a soft fabric pouch and an 8 cm CD containing the User’s Manual in PDF format. The manual is a single double-page spread with a small typeface so it’s advantageous to read it on a computer screen where it can be enlarged to a comfortable size. It covers most facets of the flash and is straightforward and easy to understand.