There are very strong rumours from those that say "I have friends in Nikon" that the fabled and overdue D300s replacement, aka D400 will not be coming.
In fact, Nikon have decided to pull the plug on semi pro DX format (1.5x crop) cameras completely and will concentrate on full frame in this market. The highest spec DX format camera will be a D600 to be released this September which will be lower spec than the D300s with a higher megapixel count (expected at 24mp).
Where does this leave us Nikon users that need DX and require a fast, rugged semi-pro camera?
Well the image below should show you how stuffed we are......
The image itself is an uncropped photo taken at 500mm on a Bigma using a Nikon D300s.
The black boundary represents how much bigger the image would be using DX mode on a Nikon D800 (full frame camera).
The white is the actual image that would be captured at full frame (ignore the D300s image for this, concentrate on black boundary)... note how little of the image is the black boundary to allow for cropping... you will be cropping a good 70% of your image out! Image size wise, DX images would be 12% bigger than if taken with the D300s. I highly doubt that would translate into 12% better quality images!

Nikon Image Size Comparison by evansaviography, on Flickr
I will wait and see what is announced by March next year, otherwise I might be selling up and moving to the dark side!
Andy



