Day: 27 May 2026

Those Streaks on Your Lens Aren’t Dust—Here’s What They Really Are

You’ve just cleaned your camera lens, held it up to the light, and there they are—stubborn streaks, mysterious smudges, and swirl marks that weren’t there before. That sinking feeling is all too familiar to photographers who’ve unknowingly made their optical glass worse instead of better.
Lens cleaning marks are the visible residue, streaks, or patterns left behind after attempting to clean your lens elements. They stem from improper cleaning materials, contaminated cloths, incorrect techniques, or using products that leave behind oils and particles. These marks can degrade image quality by creating flare, …