r/Optics↗
A place for questions and discussions pertaining to optical science and optical engineering.
30k subscribers144 posts / mo in Sep 2026112 authors / mosince 2010
r/Optics has 30k members (+28% over the last 12 months). It gets about 144 posts a month from 112 people. Top topics: Lens Identification, Lenses and Canon Cameras & Lenses.
When to post on r/Optics
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How r/Optics has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/Optics
Top topics
Share of the subreddit's posts
- Lens Identification1.0%
- Lenses0.6%
- Canon Cameras & Lenses0.3%
- Free Online Courses0.3%
- Lab Work Experience0.2%
Brands people mention
Most-mentioned brands and sites, last 12 months
- Thorlabs
- Edmund Optics
- Nature
- Ansys Inc
- Doi
Everything else about r/Optics
Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.
Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research