There are several ways to get your images to Clarity Images for restoration. Given the priceless value of many of the photographs I restore the best option is always to deliver the prints in person. If that's not possible here's my advice.
As a general rule, use the highest scanning resolution you can get from your scanner: choose at least 300dpi but 600dpi will almost always get a better result (and go even higher if the photograph is very small).
When saving the image file it produces, also use the highest resolution available: look for phrases such as ‘highest quality’, ‘large file size’, ‘no compression’. Common picture formats such as JPEG (.jpg), GIF, TIFF and BMP will all be acceptable. High resolution to get the most detail is the most important factor. JPEG is fine and other formats may give you huge files.
Most often, the photos brought to me for restoring are the only copy available. For this reason I do not recommend posting.