Again, like negative scanning, you scan at a higher resolution with slides than with photos. Similarly, we suggest scanning slides over photos if the image is the same. Negatives contain the maximum information about your image since they are fundamentally analog – and we scan negatives at 3000 dpi. We recommend scanning negatives first because negatives provide the best resolution and quality. Should I scan photo negative scanner or scan negatives. Mother and daughter looking at large photo prints TIFF files are ideal if you want to get the most out of post-scan services like photo restoration, you will definitely want to scan your photo at 600dpi.