May 20, 2018, 04:06:33 PM

Author Topic: 24-70 f/2.8 L II front coating peeling off?  (Read 80451 times)

mukul

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Re: 24-70 f/2.8 L II front coating peeling off?
« Reply #105 on: January 07, 2018, 12:26:20 AM »
Now, after some cleaning, the entire coating has come off, showing the bare glass underneath.

what is the solution and method you used for cleaning?

Previously I started a separate thread for correct lens cleaning  solution
http://www.canonrumors.com/forum/index.php?topic=34166.msg700702#msg700702

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Re: 24-70 f/2.8 L II front coating peeling off?
« Reply #105 on: January 07, 2018, 12:26:20 AM »

BeenThere

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Re: 24-70 f/2.8 L II front coating peeling off?
« Reply #106 on: January 07, 2018, 07:26:06 AM »
Chemicals in the sky? That sounds like BS! If they would eat your lens coating, think of what they would do to your lungs. 😬.  Seriously, radiation is a little higher at flight altitudes, but air constituents are essentially the same, albeit at slightly lower pressures.

neuroanatomist

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Re: 24-70 f/2.8 L II front coating peeling off?
« Reply #107 on: January 07, 2018, 08:55:42 AM »
Chemicals in the sky? That sounds like BS!

I heard Lucy is up there, with Diamonds.  Maybe the person who suggested that used a little too much LDS in the 60s.  ???
EOS 1D X, EOS M6, lots of lenses
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Mt Spokane Photography

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Re: 24-70 f/2.8 L II front coating peeling off?
« Reply #108 on: January 07, 2018, 03:17:14 PM »
Ozone could indeed cause a problem, but I doubt that the higher concentrations in a aircraft would hurt it.  Lens cleaning, on the other hand with a wet solution can work its way into the coating and loosen it.  I avoid cleaning mine except with a blower.

A Canon patent with a different method of applying the coating just appeared.  It did not mention and problems with the old method, but it applies a sealant that saturates the nano bubble coating which is probably added to keep solvents out.

YuengLinger

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Re: 24-70 f/2.8 L II front coating peeling off?
« Reply #109 on: January 07, 2018, 04:02:56 PM »
Chemicals in the sky? That sounds like BS!

I heard Lucy is up there, with Diamonds.  Maybe the person who suggested that used a little too much LDS in the 60s.  ???

LDS?  An acid head with dyslexia?

neuroanatomist

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Re: 24-70 f/2.8 L II front coating peeling off?
« Reply #110 on: January 07, 2018, 04:07:32 PM »
Chemicals in the sky? That sounds like BS!

I heard Lucy is up there, with Diamonds.  Maybe the person who suggested that used a little too much LDS in the 60s.  ???

LDS?  An acid head with dyslexia?

EOS 1D X, EOS M6, lots of lenses
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YuengLinger

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Re: 24-70 f/2.8 L II front coating peeling off?
« Reply #111 on: January 07, 2018, 05:04:18 PM »
My goodness.  ST:IV.  Completely forgot that line!  You just made my 2018.

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Re: 24-70 f/2.8 L II front coating peeling off?
« Reply #111 on: January 07, 2018, 05:04:18 PM »