He does mostly Nature and Landscape. His argument was that not even the best digital camera models can produce the print quality that film camera's can. He has been a photographer his whole life and my guess is that he's found much success with film so why change now. I suspect the he probably does the medium and large format as well (but we didn't talk about that).
Negative film far surpasses digital in dynamic range (or headroom, if you prefer). That is, you have more information stored in the shadows and/or highlights that are recoverable.
However, digital SLRs passed 35mm film in resolution long ago. 35mm film pretty much couldn't be enlarged past 11x14" without objectionable grain. On top of that, it is much easier shooting in color because you're not limited by the film's white balance. Since the guy you met only shoots outdoors, it's not much of a problem for him - he just needs overcast or daylight balanced film, or just daylight film with a warming filter on hand for overcast days.
If you want to go to film and have superior, or sometimes just the same, image quality (in terms of tonal gradation and resolution), you will need to go to medium or large format.
Anyways, to answer your question, if you want to use your EF lenses, I suggest an EOS 3 or 1v.
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