Not all scanners are capable of scanning in slides. Some require the additional purchase of a special slide adapter. I have seen cases where the slide adapter costs more than the scanner, so be sure to check out the price and availability of the adapter before you purchase the scanner. If you want to work with slides, your best bet is to purchase a scanner that either comes with the slide adapter or doesn t need one. Expect to pay a bit more for a scanner that can accept slides without an adapter.
All graphic images take up a lot of hard disk space.
The higher the resolution of the image, the larger the file and the more disk space that the image will use. So before you go out and purchase a high-resolution scanner for photos, be sure that you have a large hard drive with plenty of free space. However, if you do purchase a high-resolution scanner, you do not always have to use the highest resolution for every scan. When you scan an image into your computer, you get to choose the resolution that you use for the scan. So you may want to use a lower resolution for a newspaper clipping and a higher resolution for a photograph.