I just got a Nikon D60 with two lens. I am not in a position financially that I can get an off board flash. Can someone please tell me the major difference between the on and off board flash? I understand that the on board flash is harsh light but can you correct this during post processing in photoshop? Is there some other things I could try instead of an additional flash at this time? Sorry for all the questions. Any advice or tips would be appreciated. Thanks.