I want to digitize slides (mainly unmounted, but also mounted) using my Nikon D300. I did an initial test with a 55 micro Nikkor and the quality was good, which prompted me to seek a better setup than just having the slide on a light table. Since I already have micro Nikkors, I'd like to have something that screws on the lens and keeps the slide steady, flat and aligned. It should be quick to insert a slide and make the exposure. Now the questions: 1. The Nikon ES-1 seems to do this, but how does it work with unmounted slides? 2. I saw an ES-2 on KEH, but couldn't find any info about it. Does anyone know how it differs from the ES-1? 3. Is there any better or comparable cheap option to do this? A bellows and a copy adapter for that should also work, but that costs a lot and I don't see any other need for a bellows. The ES-1 is a bit expensive around here and ordering from B&H the postage easily becomes expensive. Will appreciate any input. And don't suggest to buy a scanner, it's significantly more expensive, slower and takes up space.