Hey all...I flew in the back of a 172 last week and was wanting to get some shots on approach where both the cockpit and runway were both illuminated. Well, being a noob in the flash area and only having the onboard flash of the 300D, what I thought would work, did not. I did an exposure lock on the outside, and then tried to use the flash for the cockpit. The cockpit was lit but the outside blown out. Is there a proper way to do this with the onboard flash of the 300D or am I going to need an external unit for it to work properly?