How do you best set up your scanner when archiving all of those prints and slides that you have in storage? It's really not too bad once you know the numbers you have to plug in, and the resulting digital files they produce. That's what this podcast is about.
The first thing I want to mention is how much flatbed scanners have improved since I last bought one (which was about 5 years ago). While working on an article for Macworld Magazine, I got to test a number of scanners and really took a liking to the Canon 9950F scanner. The 9950F is both Mac and PC compatible, provides both USB 2.0 and FireWire connectivity, and scans many different sizes of film as well as prints. I use its driver with Photoshop, and when in the "Advanced" mode, have complete control over the scanning process. The results have been beautiful.
As easy as the interface was to use, I still had to make decisions about what numbers to plug into the "Output Resolution" box. Here's where a lot of people get confused. Do you put 150, 300, 600, or 1200? And what are the ramifications of each of those settings?
The general rule of thumb is that if you want to make photo-quality prints the same size or smaller than your hardcopy source material, choose 300 dpi. (I actually prefer "ppi" pixels per inch, but used the older term "dpi" dots per inch because that's what the scanning software used.) So if your original photo is 4"x6", then if you scan at 300 dpi, you'll be able to make photo quality 4"x6"s. Actually, I think you can go up to 5"x7" at that setting, so that's what I list in Table 1.
As you increase "Output Resolution," let's say to 600 dpi, you can then make bigger prints from your source material. The tradeoff is that the file size gets much larger too. So the trick is to find the balance between having enough Output Resolution to make the prints you want and controlling the file sizes so you have enough storage to handle all of this digitized material. Take a look at the following tables to help you choose the settings best for you.
In the Macworld article that comes out in a month or two, I get into the whole process from scanning, to cataloging, to output. But for now, you can begin to digitize with confidence some of those great shots you have from the "old film days."
Listen to the Podcast
Now that I've piqued your curiosity, it's time to listen to today's audio show titled, "Scanning Tips" You can download the podcast here (33 minutes).