Gid said:
			
		
	
	
		
		
			At around £9 per 36 slide film  (Provia 100 plus dev and mount) that would be slightly less than 350 films or around 12,000 frames. However, if you need to scan or get scans the equation changes downward. If you were to consider a new RD1S (a very, very good camera - I have both RD1 and M8) then you're looking at around 160 films and 5,500 frames.
Good luck with you're decision
		
		
	 
Sorry , I simply dont agree. This is a simplistic way of viewing things that forgets few important variables : if you just use the M8 in JPEG then comparing the M8 to a film camera is fine.
Otherwise, you will shoot in RAW, means that you want to tune up ( and you should, in the M8 at least ) your images. If you do that in the M8, you will most likely want to scan the slide film as well.
Few things to note : with a good scanner will most likely provide more resolution than a M8, but scratches and gran spoil the thing. ( I have both a MP and a M8, can concour that ) - although my files that come out from my Minolta Dual Scan are gorgeous and huge, if I want a picture ( in terms of quality, ie non sractched and smooth graduations ) to look like a M8, I must spend a very good time in Photoshop with the clone and heal tools plus a couple of layers. Time consuming just due to the ineherent nature of film.
Do you considered that time ? Equate that time and the M8 makes sense from the economic point of view from much much earlier on than 350 roll of film. 
For example : I just came from my visit from Asia, where I bought my M8 - I shoot around 500 images, wherabouts 90 or so are keepers and needed to be adjusted. From those 90, around 5 or 6 are gorgeous ones and needed some special attention in photoshop.
First of all, with the MP I would have not shoot much - with film with  make each photo count , because processing costs add up. But apart from that, scanning and adjusting 90 images ? Oh brother....
Dont get me wrong - both are good platforms ( that's why Im keeping my MP and the M8, side by side ) , but you cant just translate the price difference / roll of films : with a digital you shoot more, processing and developing costs are 0 , much faster to get the images and "instant gratification".
My MP will always live ( and perhaps outlive ) beside my M8. 
But now that I have my M8, can't go back on JUST a MP. Time is money my friend... 
🙂