Others say...

"partnered with d40"
...so far so good. somehow big for d40 but i guess if you want it more powerfull than sb40 then it has to be larger right? great controls resulting in great pics so far.

"Great product"
This is a great addition to your DSLR. I have a Nikon D40 and the built-in flash is inadequate for indoor shots.

I tilt this flash straight up and bounce off ceiling. Pictures come out without the ugly glare look and very even.

You may think the price is expensive for just a "flash" but its well worth it. And don't try to go cheap with third party flashes, they don't communicate as well with the camera as first party models

"Nikon Flash"
Love it. When I first brought it home I had my grandson hide in a dark room and I just pointed and took shots aroung the room as a game of hide and seek to see how good the flash was and when we looked at the photos I won the game. The flash was powerful enough to find my grandson in the dark room. It was great.

"Powerful Choice !"
After reading some reviews in deciding between Sb-800 and SB-600 I went for SB-600 and put the money I saved towards buying a good lens. I didn't loose too much in choosing SB-600 over SB-800. Flash range is pretty decent and a fully charged rechargeable (NIMH 2100) gave me around 200 shots (depends upon usage). I shot a wedding with it right after it came out of the box. In general pictures were properly exposed and the built-in diffuser produced noticibly soft effects on face. Bounce back flash result came out a bit under exposed but it has more to do with the camera (I use D80) than the flash itself as Nikon tech support confirms that DSLRs under expose a bit to preserve highlights and data. I was able to nicely and easily fix all my under exposed bounce back pictures using Adobe LightRoom software. I had some issues with power recycling between consecutive shots but it could be due to the battery itself. In my opinion it is a good choice for the money that makes flash photography a good experience.

"Ideal for Small Portrait Studio"
I use my SB600s in my home studio and for outdoor events, shooting with either a D80 or D300 DSLR.
They are powerful,dependable, light weight and more affordable as compared with the more fully-featured SB900.
If you want to explore the Nikon CLS (creative lighting system)at a reasonable price, this unit is the way to go.
Check your camera manual as to how many channels and groups you have available. It varies among Nikon DSLR models.