I tend to use the built-in flash on my D80 for litting up foreground subjects in my landscape photos. Thou I find the results are often disappointing. I just started to try this out. The built-in flash is giving a un-natural light, to much hard shadows. Also to bright light. I tried a bit different ways but came to the conclusion that built-in flash isnt enough. It also tend to be bright in the middle and lesser light in the corners. Also the problem that going under 22mm I get shadows in my photos... So I was thinking off investing in some off nikons flashes. Maybe one SB800 or one SB600 and one SB400. But I dont have experience if this would help my situation. As I just want some objects to be properly lighted. This especially in the late day shoots to bring forward the foreground. I tried to use the HDR effect, but I think even my bult-in flash does a nicer resultat. I think HDR isnt funny as I live southern sweden that day without windy conditions is rare. Maybe some other things than flash can help me out. As long as I can carry things by foot I am allright. I am old army guy so I dont care so much about weight as long it is on my back when transported.