canon rumors FORUM

Gear Talk => Lenses => Topic started by: Rawb on August 30, 2013, 05:48:24 PM

Title: Is it possible to correct a coating on a lens?
Post by: Rawb on August 30, 2013, 05:48:24 PM
I have searched online if this can be done but I'm getting contradictory info.

I just purchased a Canon 70-200 2.8 IS II and next day as I placed the lens in my camera bag the lens cover was pushed against the edge too hard and popped off then tapped the lens. It made a very faint "smudge" or indent in the coating the size of a pen-dot. I don't believe the glass is scratched...

But can this be corrected or do I just have to live with it? It doesn't show up in pictures at all...

Just bothers me as I just purchased this this week and to my luck this happens.
Title: Re: Is it possible to correct a coating on a lens?
Post by: RAKAMRAK on August 30, 2013, 06:23:53 PM
Short of changing the front element altogether I think you have to live with it.
Title: Re: Is it possible to correct a coating on a lens?
Post by: scottkinfw on August 30, 2013, 06:50:03 PM
I don't believe that this minor defect will ever affect your images.  You will have to live with it.  I feel your pain.
Title: Re: Is it possible to correct a coating on a lens?
Post by: neuroanatomist on August 30, 2013, 07:32:52 PM
They can't be 're-coated' or at least not cost effectively as it would require sending the lens to Japan.  Service would just replace the front element.

Personally, I generally put a UV/clear filter (B+W MRC or Nano) as soon as I take a lens out of the box. If a good filter is damaged, replacing it is cheaper than replacing a front element (especially when you add in shipping/insurance), and it's also faster and a lot more convenient.
Title: Re: Is it possible to correct a coating on a lens?
Post by: brad-man on August 30, 2013, 07:45:19 PM
I'd agree with all of the responses. You certainly shouldn't notice it under normal circumstances. You could take a few images with the sun or harsh lights in the frame to see if you get any unusual flare effects just to ease your mind.
Title: Re: Is it possible to correct a coating on a lens?
Post by: Mt Spokane Photography on August 30, 2013, 08:25:45 PM
If it bothers you, you can replace the front element.  Its usually not a high priced fix (depending on your point of view). 
 
I'd check to see if flare has become a issue, if not, don't bother.
Title: Re: Is it possible to correct a coating on a lens?
Post by: shashinkaman on August 31, 2013, 04:16:45 AM
 :'( BOO HOO HOO :'(

No Pulitzer for you I'm afraid!