Connecting Photo Formatting to Everyday Preservation
Applying Internship Lessons
Now that Meghan has begun to understand the different methods of digitizing images for preservation, it is important to learn about the different formatting options when digitizing photos. Also, understanding these concepts will help Meghan with her research on connecting local communities and digital preservation.
What is Image Resolution?
The quality of a digital image often plays a role when deciding how or why to preserve a photograph. Meghan has started learning about image resolution so that she can apply these technical lessons to the preservation of historic artifacts. The Federal Agency Digital Guidelines Initiative (FADGI) recommends that images should be scanned with a 300-600 DPI (dots per inch) resolution for the best quality. Interestingly, the size of the original photograph can change this setting. The smaller the image, the higher the resolution should be; ensuring the versatility of the digital image.
What is Image Compression?
When an image is saved as a digital file, it is processed with a level of compression. This basically refers to the file size when digitized. For the highest quality image, there should be little to no compression. However, file compression is not a bad thing. It can often be helpful in preventing files from becoming too large. Measuring the acceptable amount of compression with the level of resolution can often be a tricky process.
Stay tuned for future blog posts about compression and how it affects preservation...
Formatting and Preservation
So how does resolution and compression affect the everyday community and their preservation efforts? Well, as Meghan has learned, the size and quality of an image shapes the way that the image is digitized. These dynamics also effect the ease and ability of scanning and storing pictures. As Meghan continues to research digital preservation, these lessons will be incorporated into her final project on how to bring communities together to digitally preserve photos, artifacts and other treasured documents.
What Meghan Learned Today
Storing valuable family photos in glass frames or photo albums may look nice, but glass or adhesive paper can be damaging to the photograph over time. Often, moisture can build-up between the glass and the image, deteriorating the photo by causing it to bind to the glass. When removing a picture that has stuck to glass, solutions such as Kodak's Photo Flo can be used to separate the photo from the glass without destroying or breaking the image.