DPReview.com is closing April 10th - Find out more

How to take front element off 55-250 STM?

Started Jun 23, 2018 | Questions thread
Lemming51
Lemming51 Forum Pro • Posts: 15,278
Re: How to take front element off 55-250 STM?

saxyomega90125 wrote:

... do I need to know anything?

Things to know:

  • That spec is tiny and inconsequential. It has absolutely 0.000000000 effect on your pictures or the lens's resale value. Forget it.
  • Unless you have access to an ISO clean room, you'll introduce more dust and other contaminants than you can remove by opening it.
  • Once opened it'll be even less dust resistant.
  • You may (or may not) be able to put the front group back in the exact same alignment/spacing, so you may (or may not) affect the lens's performance.

IMHO, YMMV.

-- hide signature --

Unapologetic Canon Apologist

 Lemming51's gear list:Lemming51's gear list
Canon EOS 40D Canon EF 50mm F1.8 II Canon EF-S 15-85mm f/3.5-5.6 IS USM Canon EF 70-200mm f/2.8L USM Canon EF-S 55-250mm f/4-5.6 IS STM +5 more
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow