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Thread: Cleaning of rear glass element

  1. #1

    Default Cleaning of rear glass element

    Hi, I just bought a EFS 17-85mm from a fellow CSer. All else is good except for dust specks on the rear element surface, I suspect these are cigarette ash and some may have stuck onto it despite blowing. Can I use a lint free cloth to clean just like the front element? TIA..

  2. #2
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    Default Re: Cleaning of rear glass element

    yups. that's what i do
    “How fortunate for leaders that men do not think.” - Adolf Hitler

  3. #3
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    Default Re: Cleaning of rear glass element

    Quote Originally Posted by wong1979
    Hi, I just bought a EFS 17-85mm from a fellow CSer. All else is good except for dust specks on the rear element surface, I suspect these are cigarette ash and some may have stuck onto it despite blowing. Can I use a lint free cloth to clean just like the front element? TIA..
    You can also use a lens tissue.
    Canon EOS 5D, 24-70 f/4 L IS, 50 f/1.2 L, 70-300 f/4-5.6 L IS, 600EX-RT. Sigma 12-24 f/4.5-5.6 EX.

  4. #4

    Default Re: Cleaning of rear glass element

    Yup, but its different ffrom cleaning the front, where the front won't get any dust to get inside. With the rear cleaning, I'm just worried that it may get inside and that would be impossible to clean...well guessed I just have to be careful...Thx

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    Default Re: Cleaning of rear glass element

    Quote Originally Posted by wong1979
    Yup, but its different ffrom cleaning the front, where the front won't get any dust to get inside. With the rear cleaning, I'm just worried that it may get inside and that would be impossible to clean...well guessed I just have to be careful...Thx
    Everytime i clean the elements clean with my lens tissue of microfiber cloth, i use my blower to blow off any remaining dust on it.
    Canon EOS 5D, 24-70 f/4 L IS, 50 f/1.2 L, 70-300 f/4-5.6 L IS, 600EX-RT. Sigma 12-24 f/4.5-5.6 EX.

  6. #6
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    Default Re: Cleaning of rear glass element

    dust usually wont affect picture quality.

  7. #7

    Default Re: Cleaning of rear glass element

    It does on the rear element.
    My Personal Folio (of random events and things)

  8. #8
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    Default Re: Cleaning of rear glass element

    I don't like any dust on my lens elements, regardless of front or rear.
    Canon EOS 5D, 24-70 f/4 L IS, 50 f/1.2 L, 70-300 f/4-5.6 L IS, 600EX-RT. Sigma 12-24 f/4.5-5.6 EX.

  9. #9

    Default Re: Cleaning of rear glass element

    do you guys prefer to clean it wet or dry?

  10. #10
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    Default Re: Cleaning of rear glass element

    Quote Originally Posted by burmesterhifi
    do you guys prefer to clean it wet or dry?
    Dry...if it's wet, it may cause more stains after drying.
    Canon EOS 5D, 24-70 f/4 L IS, 50 f/1.2 L, 70-300 f/4-5.6 L IS, 600EX-RT. Sigma 12-24 f/4.5-5.6 EX.

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