A Practical Guide to Lens Aberrations and the Lonely Speck Aberration Test

In this article I review one of the most common problems that affects the design of our camera lenses: aberrations.

I hope to give you practical knowledge about the common technical problems of lens design and how they actually affect your photos. Most of all, this article is here to help you understand one aspect of why one lens will produce a better, more accurate photo than another. It’s an especially nice bit of knowledge to have when choosing equipment for use in even basic astrophotography.

This is sort of a pixel peepers’ article: you could go through your entire photography career and never learn about lens aberrations and be just fine. But if you like the idea of understanding the fine details behind lens performance — and how it affects your photos — this article is for you.

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How to Find the Milky Way

If you want to photograph the Milky Way, the first thing you’ll need to know is how to find it. In this article, I share some of my favorite tools and tips for finding the Milky Way’s galactic plane and more specifically, the bright galactic center. Using either smartphone apps or by memorizing important constellations, you’ll be able to find the Milky Way with or without the use of technology.

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