36? I put on macro lens. Screw on Nikon ES-2. Put one slide in, point at my lamp, focus, set exposure, snap. Then the next and next and next. Putting the slide into the ES-2 holder is a bit faster than the holder for my scanner. But the real difference is the amount of time for a scan versus a shutter snap, which might be say 1/100 of a second. Setting up the scanning rig I had with tripod, light table, etc was more complex. I got somewhat better results with that because my negative hold kept the film a bit flatter, but I can do some of that in post, and I am happy trading that for the speed of the ES-2. I wouldn't bother to tether the camera with only 36.
Post with slides is faster with Lr and Ps rather than with Vuescan and then Lr or Ps, but I guess that depends on what software one has. I just find it easier to work in the same software for all my images, so I probably don't make optimum use of Vuescan anyway.
And they are better than any of the consumer flatbeds I've used. I've tried pixel shift on the transparencies, but it doesn't seem to improve things much. With my full frame I can resolve down to grain at 1:1; that's fine for me. 120 or bigger might be different too; drum scanning or wet mount as you say.
The transparency scanners that used to be more common were pretty good but actually I think it was Nikon's software that was the best feature of those. Quite awesome at scratch and dust fixing.
I'm thinking of just switching to my iPhone for a lot of old family prints since the auto deskewing and such is so good. But I can't find any scanner app that does TIFF or raw, and color correction is more of a pain with the JPEGs. But I just don't need much more resolution on Polaroids and 4x5s.
