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Weather sealed lens ≠ Fly sealed

By Marcus Wong - on 12 Apr 2019, 2:36pm

Weather sealed lens ≠ Fly sealed

Lensrentals.com has just posted a full breakdown of how they dismantled a Canon 70-200mm f/2.8L IS II as part of a repair service because there was a fly in it. Yes, an actual fly.

Written by Roger Cicala, founder of Lensrentals.com, the blog post not only details the process of disassembling a quality zoom lens, but also gives some insight into just what can affect the image capturing capabilities of today’s modern optics. 

Yes, it's a full fly on the lens.

As you can see from the images below, even with a fly inside the lens, it’s able to perform relatively well until stopped down past f/13. Definitely an entertaining read if you’re into photography, so pop over to check out what the inside of a modern zoom lens looks like!

Resolution chart captured by the lens with the fly still within.

Lens test stopped down to f/11.

Source: Lensrentals.com