Minimum Resolution: For photo restoration, the absolute minimum scanning resolution should be 300 DPI (dots per inch). This resolution ensures that enough detail is captured to preserve the photo's original quality and allows for basic restoration work.
Optimal Resolution: To achieve better results and provide restoration experts with more information to work with, consider scanning your old photos at a resolution between 600 DPI and 1200 DPI. This higher resolution captures finer details, textures, and nuances in the image, making it easier for the restorer to address imperfections and restore the photo to its best possible state.
Large Prints and Enlargements: If you plan to print the restored photo in a larger format or create enlargements, scanning at a higher resolution is essential. Higher DPI scanning ensures that the image retains sharpness and clarity even when enlarged.
Balance File Size and Quality: Higher scanning resolutions result in larger file sizes. While higher resolutions provide more data for restoration, they may not always be necessary for all photos, especially if you're working with limited storage space. Consider the balance between file size and the level of detail needed for the restoration task.
Original Photo Size: The size of the original photo also influences the scanning resolution. If the original is very small, scanning at a higher DPI may be beneficial to compensate for the small physical dimensions.
Special Considerations: In cases where the photos have significant damage or are of historical or sentimental importance, it's best to opt for higher scanning resolutions to ensure the restorer can work with as much information as possible.
Consult with the Restoration Service: If you're unsure about the ideal scanning resolution for your specific photos, it's a good idea to consult with the restoration service you plan to use. They can provide recommendations based on the condition and type of photos you have.
Remember that while higher scanning resolutions provide more data for restoration, they also result in larger file sizes, which may affect storage and file transfer. Therefore, it's essential to strike a balance between resolution and practicality while ensuring that the scanned images provide enough detail for the restoration process.