Since I the right angle viewfinder (DR-3) had already been in my analogue Nikon in use, it was clear to me, I also need the right viewfinder for my D300s (DR-6). The question is really not whether you need it, but if you want to spend so much money. I was also wondering about briefly, then decided to go but fast to buy. I have not looked back. The image to be photographed cutout is displayed clearly and sharply, the info line of the camera is also clearly visible. Through the zoom ratio (x2) can be displayed even greater, an even finer adjustment is possible. The viewfinder makes a strong impression, even though he is no longer (as in the DR-3) made of metal. As a complement, with local difficult shots, I can only recommend the viewfinder. You buy him once and always enjoy it when it is used.