I have to agree with Lea. I use a Gary Fong diffuser and get excellent results. Another thing you could try is to bounce the flash set to TTL while shooting in Manual. Any thing you try that will be successful will involve either diffusing the flash…
On his blog, Michael Hagen has in his publishing section a list of settings for various Nikon Cameras for different types of photography. In particular, for the D-300 he advocates utilizing 1/320s (auto FP) for Nature, Portrait and Sports Action pho…