Wow. I went into this thread telling myself:
Shutterflower - Vuescan has an undeniably weird interface. This causes two problems. First, the obvious threshold to use is high - it's just hard to use, and it can make you not want to use it. Second, some of the quasi-user-friendly stuff, like the existence of those film profiles, is actualy counter-productive in a lot of ways. You sometimes actually don't want to use the profiles with certain films, or you should ignore the profile for a particular film if it is there to get the best results. The profiles are great tools for changing the curve of a scan, but it's confusing because they are there for some films and not for others.
Also, I find Vuescan FAR better on B&W than NikonScan. I am able to get far more information and a much smoother curve out of film with Vuescan than I can with NikonScan. Also, I have to deal with salt-n-pepper grain with NikonScan that is eliminated without additional tactics in Vuescan.
Finally, the main thing with Vuescan is control and information. Yeah, it's an ugly interface, but if you dig down and really look at what each thing is doing you find out that you can tweak almost everything. Number of passes, long exposure pass, and even change the shape of the curve. Also, you get more information. NikonScan always seemed to clip a little bit out of the ends of the histogram, even if it looked like it didn't. When I opened the file up in PS the historgram was clipped. However, even if it does look like I clipped the ends in Vuescan's histogram preview, there is space left at both eneds when I open up in PS. This means I've gotten every last bit out of the frame.
Finally, once you get all of that down, I can get reproducible quality out of my scans. This means that I can calibrate my entire exposure and development process to my scanner, scene by scene, frame by frame (well, of course I don't develop film frame by frame, but you get the idea). That's some serious power.
Vuescan is not easy to use at first. It's not really that easy to use later, either 🙂. And so I do not fault anyone for saying that it produces bad scans when, in fact, I feel that it's merely an issue of someone not spending enough time with it. Because, again in fact, the reason why people don't spend enough time with it is because it's so hard to use (whoa...that's kinda circular...sorry). But the fact is that it's also quite powerful. And I am personally willing to deal with Vuescan's quirks to get the power and control I need. But others may and do not.
allan