Comments about Metz Metz 76 Series MZ-5, Digital Handlemount TTL Flash with NiMH Battery and Charger, with Spare NiMH Battery & SCA-3402/M2 Dedicated TTL Flash Adapter for Nikon Digital Cameras:

As much as I would prefer something lighter and less cumbersome it gets the job done. Allows you to be mobile while still getting the photos you need. Just need to find a better way to hold the camera; holding the handle of the flash is not the answer if you want to focus. I place my left hand under my lens to brace and focus. The standard hotshoe flashes (I have both the SB800 and 600) can't compare. The package sold here gives you the iTTL function and it works. The secondary light is very nice. Like all flashes a diffuser will help if you can't bounce. It really has its place in large rooms when strobes are just too complicated and the hotshoe flash is too weak.