The dry version I have is from many, many years ago...I'm pretty sure it's the original (and only, at the time) BetterScanning solution. Nowadays, and you'll certainly want to review the website to be sure about this, the current version can be bought to do wet mounting only or both wet/dry mounting. The wet version includes a simple piece of glass, while the dry include AN glass. I was only interested in the wet version because I already had one for dry scanning. Plus, in my experience I've always gotten better scans doing wet mounting. I wet mount everything from 35mm to 8x10. I've had a love/hate relationship with Vuescan for nearly 20 years, but many folks use it. I much prefer Silverfast.