Re: Film versus digital

Have you done any digital stitched images? (this isn't for action shots!) I use a spherical panoramic head and PTGui stitching software to get similar resolution to large format. Often I will shoot a 2x3 or even 3x7 matrix to stitch together, allowing very large print sizes. This gets way beyond the 17 megapixel range.
I have done a few train shots with action this way, by shooting all but the frame the train will be in, first, then making sure it is only in the final frame. This will work where it is part of the scenery.
Although I've never really had the need to go to extremes, some folks are shooting 50 image plus stitches.