oh i forgott, by the Nikon D 100 you need a macro lens extra, so you can add 500 $. so you can say ca. 3000 $ for all. With the Sony you are cheaper 2000 $. you can buy in 2 years for this 2000 $ the newest Nikon for sure.This is the matter why i will wait and the Sony is superb. Carl Zeiss Obejctive normaly used by Hasselblad is the highest standart on the world and a normaly a most expensive Objective.