>>3746220Well, more resolution, even if the neg doesnt have it, more defined grain I suppose.
Lets say you have a decent quality 50 lp/mm on your 6x7cm bit of film, it may go up to 80-90 lp/mm on a high contrast target but the quality at the peak of resolution on film is always crap and barely visible vs the same resolving power on digital. That peak will vary with film and lens combo. Anyway thats still 38mp of good quality detail, and a peak of 96mp (barely visible).
Most cameras are 24mp+ now, so probably unnecessary, but if you had a 12mp camera, you may want to stich a few shots at 1:1 to get more detail. Medium format to a lot of people was about getting more detail. And if you have it on the neg, in some cases you may as well pull it off if its a decent shot.
Plus even at 24mp, you're going to need to crop the image a bit for a one-shot, as the image format ratios are slightly different. If your sensor is exactly 36x24mm, and you fit 6x7 exactly short edge into 24mm itll be like 1:2.33, and the long edge wont fill the long edge and will need to be cropped. Of course you wont get it exactly, so you'll need to do it at a little less magnification. So you may end up at 1:2.6. Once you frame everything up and crop it, you may end up at 15-16mp image.
If you went through all the trouble of shooting medium format that may be unsatisfactory for you. While a 2x2 stitch that fits everything in on a 24mp sensor may give you around a 40mp image from 6x7cm
You dont really have to do this for every image.
