Which lens aberration is most noticeable at wide angles and how can you minimize it?

• A. Barrel distortion; minimize by corrections in post, by choosing lenses with low distortion, or by keeping the subject away from the edges
• B. Pincushion distortion
• C. Chromatic aberration
• D. Spherical aberration

Answer: (A)

At wide angles, straight lines tend to bow outward toward the edges of the frame, a distortion called barrel distortion. This happens because the lens projects a very wide scene onto a flat sensor, and the mapping exaggerates curves near the image edges. You’ll notice it most in architectural or street scenes where lines should be straight but appear to flare outward.

This makes it the most noticeable distortion for wide-angle use. Chromatic aberration and spherical aberration are real issues too, but they’re not tied to wide angles in the same distinctive way, and pincushion distortion is more common with other focal ranges, especially longer focal lengths.

To minimize it: apply lens corrections in post-processing to straighten the lines, choose lenses designed with low distortion, and keep your subject toward the center of the frame so the strongest distortion isn’t in the important areas of the image.