Slides make for great old-timey fun, but it’s awesome to have a digital backup of your old photos, too. An automatic digitizer can make quick work of your collection, and this build from [rbwood53] ...

From the bare bulb or out the lens? Out the lens, practically none. Most glass attenuates UV very well. Same for a fluorescent lamp. You need special glass to pass significant amounts of UV.

eWeek content and product recommendations are editorially independent. We may make money when you click on links to our partners. Learn More Choosing a video and slide projector for permanent ...

What is the best slide projector? Slide projectors have been around for well over a century, providing the opportunity to take images and display them on a bigger screen for clearer viewing.