Answer: fast moving targets. I love my OM-series cameras, but focusing by hand with 300mm lens on a bird -- well, I'm not really up to that task. With F100 I hope to have some hope of doing wildlife photography without resorting to d*****l SLRs. Autofocus, shutter priority, optical vibration reduction, fill flash...

To be honest, it feels good to have a really modern film camera. Kind of reminds me that modern camera technology and film tech can work together towards common goal.