Diopter

What is a Diopter, and how do I set it?

What is a Diopter, and how do I set it?

If you’ve ever wondered what that tiny dial attached to the outside of your viewfinder is, the one with the little +/- on it, well, you wouldn’t be alone. I’m constantly amazed by how few people actually take the time to make sure this is set correctly. The good thing is even if your diopter is completely out of whack it usually won’t have an impact on the outcome of your image.

So what is a diopter, and why is it important?

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