Don't be deceived by the nissin i40's svelte dimensions this mini marvel packs a guide number of 40 at 105mm, video lighting adjustable over 9 stops a real boon at special events at gigs, where you can freely switch between videography and still photography, and a specification replete with high end features'. '.strtoupper('a')lthough perfectly proportioned for smaller dslrs and compact system cameras, the i40 is equally at home on full size dslr models, weighs only 203g and fits easily into a pocket'. '.strtoupper('t')he flash head features 180deg horizontal and 90deg vertical rotation and is powered by 4x aa batteries not included which provide sufficient power for over two hundred full power flashes or three and a half hours of video lighting'. '.strtoupper('w')hy weigh yourself down, when this little wonder does it all?