My friend sent me some images from the M8.2. Absolutely fantastic for a digital camera, really. But too small and not upgradeable for my gusto
If your clients don't press you into fast turnarounds, stick to film. I use a Nikon Coolscan LS 5000 for my 35 mm slides and a Nikon LS 9000 for my 120 slides. Always scan @ 4.000 ppi @ 48 bit.
The results are awesome, even compared to the M8.2 (ok, to be honest, I use only ZEISS lenses for serious work).
Just a couple of days I've posted something in another forum which might help you a bit:
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Some math to make the point clear:
The new Canon 5D MKII delivers images at a size of 5.616 x 3.744 pixels.
5.616 / 300 ppi = 18.72 inches or 47.55 cm
3.744 / 300 ppi = 12.48 inches or 31.17 cm
If you want larger prints, you either lose sharpness or have to use an ugly interpolation.
A 6x9 slide scanned @ 4.000 ppi (just a medium resolution) delivers an image of 12.900 x 8.600 pixels.
12.900 / 300 ppi = 43 inches or 109.22 cm
8.600 / 300 ppi = 28.67 inches or 72.81 cm
A 8x10 inch slide scanned at 4.000 ppi (just a low resolution) delivers an image of 40.000 x 32.000 pixels.
40.000 / 300 ppi = 133.33 inches or 338.67 cm
32.000 / 300 ppi = 106.67 inches or 270,93 cm
Now compare the tiny Canon 5D MKII format to the others. I guess you can figure out the result if you will drum scan the 6x9 or the 8x10 slides with a resolution of 8.000 ppi on a Heidelberg Tango or a similar device.
And I think everybody can imagine how blocky and pixelated a digital image of the above Canon would look if it will be enlarged to the same size as the film images with a resolution of 300 dpi in the printing process...
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The real catch here is that even the Canon 5D doesn't do 300 ppi, just 180 or 240 ppi max with a 'full size sensor'. The Nikon LS 5000 delivers 5.550 x 3.700 pixels @ 48 bit. If you want even more, but I always crop the slides a bit. That's slightly less than the Canon 5D XYZ.
Last week I had been on an assignment with a friend and co-worker. Same location, same light, he digital with a Canon 5D Whatsoever, me with a Contax G2 and an Arca Swiss. I thought the Arca Swiss with 6x9 would the only winner, but no, the Contax G2, ZEISS lenses and a Fuji Provia 100 F beat the Canon 5D XYZ in tonal range and sharpness in the final print @ 60x 90 cm. Of course he was a bit frustrated and sad, but since we are working together he usually shines in different disciplines where the image size is A3 max. OK, I don't want to talk about his ranting because of the dust on his sensor, that's another story and experience.
If you'd ask me - go for film and a first class scanner. New emulsions are constantly developed, that means as soon as you pop a new film into your camera you'll enjoy a free upgrade without having to kick the 'old' body and invest into a new one
And grain, well, you can see it on your screen, but not in the final print, not even if you use a Lambda or LightJet for your prints. Film has soul, and that's what I sell to my clients. To answer your question: no, I don't even own a digital camera, not even a cell phone with some digital plastic lens.
The image below is a nice example for a 35 mm scan on a Nikon LS 5000. I've shot it with a Rollei 35s, placed onto the top of the counter in a bar (ZEISS lens

) and scanned it with 48 bit.