Panasonic Lumix DMC-GF2

Hi, does anyone know which external flashes utilise the AF-assist on the flash that work with the Panny GF2, and don't just use the on-camera AF-assist? Most flashes seem to be PDAF not CDAF compatible. I shoot in dark enviroments with the aperture wide open so need a relatively effective external flash with af-assist. Ideally I'd like something pretty small too, I've got a number of speedlights for nikons but really don't want anything close to this size.  Thanks

I'm getting ready to downsize my camera kit, which involves selling my remaining Canon gear and picking up a GH3 (new main body, keeping GX1 and others as backup) plus a 60mm Macro and 12mm f/2 (to add to my 14/20/45 kit).  It also means once again trying to find the "perfect" bag.  I went from a Slingshot to a Fastpack with my full frame gear- I do a lot of walking and hiking so the backpack (especially with a padded belt) made it much more comfortable.  However, the Fastpack I have is...

Dear Sirs Need some professional advise on the 10sec timer focusing. I'm an avid angler.  Whenever I catch a fish I would like to take a photo of my trophy catch. Here's the scenario.  When alone, I set the camera to Program mode, 10sec timer, place the camera in position and press the shutter button.  Here's the outcome. As you can see the subject is out of focus.  I had to trial and error to focus on something with the same distance, press the shutter button then place the camera on...