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If you use 600 DPI, all you're doing is doubling the SIZE of your 4圆. At 300 DPI, you have all the detail possible. When you use 600 DPI to scan that photo, you're not adding more detail. Remember, your photo lab used only 300 DPI. I thought my scanner is going to get down into the photo, and uncover some extra detail. When I first scanned photos, I thought if I use more DPI, I'll get more detail. But what happens if you use 600 DPI? Or 900 DPI? Well, if you use 300 DPI (or PPI) to scan that photo, you will get an EXACT copy of your original. Remember how the photo lab used 300 dots per inch to make up your photo? What Happens When You Scan Your Photo At 300 DPI Or Higher And 300 DPI is good enough.Īnd that's how you get photo DPI. But most photo labs used 300 DPI to print your photo. Of course, there were better printers that could squeeze more DPI. Remember when you had those photos developed? The photo lab's printers could only physically print 300 coloured dots to make up your photo's image. Every inch of your photo is filled with 300 of these dots. If you look close enough, you'll see a bunch of coloured dots. I was shocked to see how bad the scans looked.įollow along, and I'll show you what's the best photo scan resolution is, so you don't waste time getting low quality scans. After spending a few hours scanning, I decided to test the images on my 720 HDTV.

At 72 DPI, the digital images looked amazing on my computer monitor. If you don't understand photo scan resolution and DPI, you're going to end spending hours scanning low quality digital images.ĭon't do what I did: back in 2004 I scanned my parent's photos at 72 DPI.