Hi Bob, No, you certainly don't need to cut a slot in the F5 to effect a digiback. Additional electronics yes, and that's what I refer to as a digiback anyway. The CPU in the Nikon F5 cannot be wrong for a digiback all that is required is a new firmware version that would enable a seamless integration of the existing circuitry with the enabled CCD back pronto. No great science eh!
Now, Larry in his message agrees that the whole question is a marketing issue, I aver to his agreement. Indeed the development of a digiback for the F5 and F100 is purely for the economic gain of Nikon and Nikon only. Of course a digiback will terminate the coolscan market, dx lenses will be kissed goodbye, oh, the new flash gun with an 800, I've actually lost count on how many manipulations of the market The Nikon has made in total.
Okay, let's see. You're probably right about the F5's existing CPU being acceptable for use as far as the mechanical stuff goes (auto focus, etc) but you still need to add another CPU to handle the operations of the CCD itself. Oh, and memory - where do you propose the smartcard would go - or would you say a cable attachment to a belt-clipped digital image tank is the way to go? The point is, there are a bunch of things that would have to be stuffed in this miraculous digi-back, and they would take real space...in effect, think of the old Polaroid film holders that Nikon had for the old F's - huge clunky things that were as large as the main camera body to contain the mirrors and polaroid film. Well, with a digiback, it wouldn't have to be as big - but how excited are you over the notion of adding another inch or two (or more) to the height of your slim and svelte F5? Or would you add those cubic inches to the back of the camera, preventing your eye from getting near the viewfinder?
I giggle at the Leica reference someone made before - I also recall the SLR adaptor they made for their rangefinder cameras a couple of decades ago. A really clever engineering kluge, it was - mounted between the lens and the camera body with a viewfinder tube that allowed the user to see the reflected image. How often did you see those puppies used? But obviously the intent was to give the owners of the hugely expensive Leitz lenses the ability to use them on an "SLR", even if that device was manual stop down and even required manual mirror flip.
As for Nikon only considering its own "economic gain" - yeah, that's what that darn capitalistic philosophy will do to a company - make it feel the need to not produce money-losing items. Don't you hate it when that happens?
Not to rain on your parade of silliness - have you any idea of how many pros have sold or shelved their F5's and have gone to digital? So the F5 market is ever-shrinking - and that, of course, is naturally the kind of market any company wants to produce new products for. What with engineering and tooling costs being nothing, it's obviously an issue of management shortsightedness at Nippon Kogaku that they haven't realized the potential tin mine of opportunity in creating digital backs for the F5.
Really, kids - for all this whining, have you noticed that when the D2H comes out there's not an option to have new back for the D1's? And for gosh sake - they are cut from far more similar cloth than the Dx and the F series. Or go cry to Kodak - after all, it's really in their interest to keep the film industry going - why not ask them to make a film back for their 14n? Oh, yeah, 'cause you can't remove the back of the 14n...can you guess why? But then again, why take heed of the realities as seen by the pro market and another captain of the photographic industry?
Well, everyone is entitled to their hopes and dreams, and I certainly don't want to be accused of crushing them, Innocent - no matter how completely unfeasible they are. I'm just trying to apply some simple logic to the issue. Remember, there's engineering and there's Product Management - the former asks "can it be done?" while the latter asks "should it be done?" Any product manager at Nikon (or Kodak) knows the answer to that question.
BobF