Over time, you'll likely see your lens develop a couple specks of dust inside the lens. This isn't uncommon, and 99% of the time, won’t affect your image quality at all. However, for the neat freaks out there, it'll become a big issue for you, and you'll want to send your lens in for cleaning. Lens Rentals shows us how they do it.
As a personal warning, I recommend letting the professionals handle this. One small mistake could turn your expensive piece of gear into a paperweight, so hand it off to the people who know what they're doing. However, if nothing else, this break down of the process looks really cool.
Lens Rentals does a great job of making the process look deceivingly simple, using just a small screw driver, and a couple prying tools, they're able to get into the innards of a Nikon 24-70 f/2.8 AF-S, Canon 85mm f/1.2L, Canon 100-400 IS L and more. Check out some of the pictures of the process below, and be sure to check out their full blog post to see even more gear getting a tear down.
[via LensRentals]
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My lens needs a cleaning for sure. A large spec of something got inside the lens and it causes problems if the background is white.
I dropped mine in some sand dunes and now there is one grain under the focus ring I can't get out. You can hear it. Maybe this will work.
suitably scared off!
Thank the Lord for CPS.
Wear latex gloves if you try this. Otherwise fingerprints left inside the lens will become food for any passing spore, and will be covered in a light fungus within 5 to 10 years.