sitemistic said:
I don't think there is any incentive for Nikon to do a RF. There is no substantial base of existing Nikon film RF users, they don't make RF lenses that they need to sale. Unlike Leica, they stopped making RF's years ago. They would pretty much be starting from scratch in the market, something Leica didn't have to do. It just doesn't seem to make economic sense for Nikon to do it.
But what if Nikon were to make an RF body for their SLR lenses?
-- I don't know whether the distance encoders in the current AF-D Nikkors are accurate enough for focusing (they may just supply an approximate distance measurement for flash automation etc.) If they are, or if they could be upgraded, they could easily supply the distance input for an RF system driven by a stepper motor, rather than fragile, expensive mechanical couplings. Presto, an all-digital RF system that could be mass-produced and calibrated on automated equipment, rather than requiring the expensive hand finishing that goes into Leica Ms.
-- The latest Nikon DSLRs, e.g. the D300, can focus in their "live view" mode via contrast signals from the sensor. While this is slow when used as the only focusing system, it might be more acceptable if all it had to do was fine-tune focus achieved by a separate RF system.
-- Live view means the camera wouldn't necessarily be limited to a small range of lenses; it could use the electronically coupled RF for certain lenses and live view for all the others, including zooms and extreme teles.
-- A Nikon SLR body is fairly thick, while an M body is thin; this opens up the possibility of having a thin body with an M-mount flange, plus an electronically coupled adapter that would accept Nikkor DSLR lenses.
-- Presumably this body could use many of the internal subsystems and accessories of a D300 or D3 SLR, so the fact that it wouldn't be a high-volume seller wouldn't necessarily be a handicap.
And there you'd have it: a "niche" camera that would fit right in with the rest of the Nikon system, offering unique benefits not available from competitors, and compatible with Nikkor SLR lenses as well as M-mount lenses. It wouldn't sell in huge numbers, of course, but since it would be based on existing engineering it could well be a nicely profitable specialty item.
If this sounds a lot like some of the "D3x" rumors circulating a few months ago, well, there you are. Most pundits at that time dismissed those rumors as impractical and crazy. I admit it's unlikely that Nikon would make such a camera, but I hope I've demonstrated that it would be neither impractical nor crazy!