This powerful flash from Nissin comes in a particularly compact size. The i400 is about the size of three AA batteries and can be comfortably carried, even when mounted on the camera. The flash, measuring just 85 x 61 x 85 mm, offers a guide number of 40 at ISO 100, f/8, and 35 mm, reliably illuminating a distance of five meters.

With TTL, automatic, and manual modes, it achieves powerful and flexible flash metering. For TTL flash metering, the required amount of light is determined by the camera sensor, and the light output is adjusted accordingly to ensure the subject is correctly exposed.

You can easily operate the flash unit: simply turn it on after sliding it open and select the auto mode, and you're ready to go. Manual settings can be chosen using the two control dials. The tiltable and rotatable flash head allows for both portrait and landscape shots.

The rotation from 0 to 180 degrees ensures that subjects can be illuminated from various angles. The integrated reflector and wide-angle diffuser can be conveniently pulled out or flipped open, enabling bounce flash photography and indirect lighting.