Best DPI Resolution When Scanning Different Size Photos

Find out what DPI to use when scanning photos

In this article you’re going to learn...

  • How to setup your scanner software and pick your DPI
  • That 300 DPI is good enough for HDTV quality and 4" x 6" digital images
  • That you'll need more DPI if you want to turn any size photograph and make it 2 times, 3 times, 10 times bigger!

If you're not sure how resolution works, then you might waste time scanning low quality images.... or waste time scanning images way too big for your needs.

Here's what you need to know...

1. How To Pick Your Resolution For Photo Scanning

Fire up you scanner, and look at your settings for "Resolution". Here's how mine looks like...

photo scan resolution dpi setup

Simply input your DPI (dots per inch or PPI, pixels per inch).

2. Here's What Happens When You Scan A 4" x 6" Photo At 300 DPI

So what DPI do you use? Well, let's have a look at 300 DPI...

4x6 photo scan at 300 dpi

At 300 DPI you turn your 4x6 photo into the same size: 4x6 digital image. That's because when your photos were printed in the photo lab, they use 300 dots per inch to print your photo. So at 300 DPI, you're getting an exact copy of your original photo.

And, a 4x6 photo scanned at 300 DPI will be HDTV quality...

4x6 photo scan at 300 dpi is hdtv quality

You can watch your 300 DPI photo scans as full resolution, HDTV quality images.


3. What Happens When We Scan A 4" x 6" Photo At 600 DPI Or More!

Now let's double the DPI to 600. Here's what happens...

4x6 photo scan at 600 dpi

At 600 DPI you DOUBLED the size of your original photo. Your scanner mathematically figured out how to take your 4x6 photo, and make it into a 8x12 photo WITHOUT losing quality. This means you can take your 600 DPI photo scan into a print shop and re-print it at 8x12.

And at 900 DPI? The same thing...

4x6 photo scan at 900 dpi

At 900 DPI you you'll get a 16" x 24" digital photo. You can even get away with 24" x 32".


4. What If You're Scanning Photos That Are Not 4" x 6"

Let's say you have those old 2" x 3" photos. Now, remember, if you use 300 DPI you'll get the exact same size...

old photo scanned at 300 dpi

As you can see, 300 DPI will give you the SAME image.

Let's see what happens when I use 1200 DPI?

old photo scanned at 1200 dpi

At 1200 DPI, you turned your tiny 2x3 photo into a 16x24 digital image -- without losing any quality.

3 Actions Steps To Help You Decide What's The Best Resolution For Your Photo Scanning Needs

  1. If you use 300 DPI, you'll be safe. You'll get HDTV quality images. And you can re-print them out at the original size.
  2. But if you want to double or triple the size of your original photo, use 600 - 900 DPI. And it's always better to have too many pixels, than too little. I personally scan all my 4x6 photos at 900 DPI.
  3. If you have photos smaller than 4x6, use 900 DPI or more. I personally use 1200 DPI to scan all my smaller photos.

Free Ebook: Tells You Secrets To Getting High Quality Slide, Negative, Photos Scans In Half The Time

Which of these scanning troubles do you want to overcome?

  • What's the best resolution / DPI to scan your slides, negatives, and photos -- so you don't lose details
  • Best method to digitize slides, negatives, photos using your regular flatbed or film scanner
  • How to clean your negatives, slides, and photos before you scan them -- so you don't scratch them
  • What side should you scan a slide or negative -- so they're not backwards or facing the wrong way
  • How to setup your scanner to get higher quality digital images -- 24bit JPEG? 48bit TIFF?
  • How to fix your digital images using Digital ICE, GIMP, or Photoshop and make them look new
  • How to improve your scan workflow so you can double your productivity and finish your project twice as fast
  • Understand the technical stuff of a digital image so you can make sideshow videos, reprints, and more!

Hey, my name is Konrad. I've been scanning professionally since 2005. I've helped multi-billion dollar companies, pro sports teams, pro photographers, artists, museums, book publishers, etc. I've scanned over 930,000 slides, negatives, photos.

The reason I'm telling you this is because no matter what challenge or frustration you're having, I know exactly what you're going through. So, to help you RIGHT NOW, I've put together a super simple scanning guide to get you started.

How to scan slides negatives photos into digital, free ebook download

Your free ebook is up for grabs. Just click the button below and start downloading...