I spent the last two days scanning 7 boxes of slides using the Epson V600 and the older Epson software, on professional mode. I know two days sounds like a lot but I wasn’t sitting over it, rather I let it work behind me as I was working.
It’s a little more hands on than negatives as you can only load 4 slides at a time.
Mine were a mix of Kodachrome, Etchachrome and one box that I have no idea about, except they were taken in 4 varied conditions over the span of 4 months in the early 80s (inside December and April, outside in the snow (grey) and outside in the spring (sunny). The box says Kodak but the slides are only stamped with the month and no other info. Those I did have to separate based on the time frames because if I did a preview with an inside pic and a snow day pic, one of them would not come out. If I kept like with like, they worked well.
I still have the issue where the software hangs up between sides, and even starting Preview mode, unless I move the mouse. If I leave it alone it will finish but takes much longer.
I have tried Vuescan a couple of times but I can’t get it to easily separate the slides even though I’ve used the multi function and selected 35mm slides. I have to do so much manual crop adjusting that I gave up. Epson Scan is pretty seamless at picking up the amount of slides or negatives.
The only type it has failed on so far are slides from a 110 camera, those I do have to move the selection to each negative individually.
Diane