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Photography Question 
Amanda  M. Freese
BetterPhoto Member Since: 10/18/2007
 

Sand in my focusing ring/zoom ring


Hello,

I think I made a grave mistake one fine day at the beach.. I ran into a sand storm like I'd never seen during a session one day, and was unprepared and could not escape. As a result I now have sand in my zoom and focusing rings of my lense. (Canon EF 28-235 mm IS USM)

I have worked really hard to get as much of it out as possible, but I can still hear little crunches as I turn the rings. I dont see anything in the lens viewing area, and I did not take the lens off the camera in this storm.

Is there anything I need to worry about with this situation right now? Did it just dramatically shorten the life of my lens or is it typical that this would happen at some point?

Im worried that I just cost myself a lens- this one hasn't even had much of a life yet.. . :(


Otherwise the pictures I've taken since seem unaffected.


Thanks, any opinions or experience info would be great .. ;)


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8/23/2008 4:23:50 AM

 
Gregory LaGrange
BetterPhoto Member Since: 11/11/2003
gregorylagrange.org
  May make the focus ring drag. A cleaning and re-lube.


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8/23/2008 8:54:37 AM

 
Amanda  M. Freese
BetterPhoto Member Since: 10/18/2007
  ok. . . would/should I send it off for a cleaning and re lube?

haven't had to do anything like that yet, so not sure if it's super easy to just do myself.. ??


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8/23/2008 9:35:45 AM

 
Gregory LaGrange
BetterPhoto Member Since: 11/11/2003
gregorylagrange.org
  If it's gotten down in between the focus ring and lens barrel you should take it somewhere.
If it's superficial and only in the seam of the focus ring you can try cleaning with a paint brush and some iso-propyl alcohol or methanol.


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8/23/2008 9:50:05 AM

 
Amanda  M. Freese
BetterPhoto Member Since: 10/18/2007
  Thanks, I'll take it somewhere. incase you happen to know the construction of Canon lenses... do you know if that sand can get inside the lens from the focus ring areas?

Thanks


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8/23/2008 9:58:02 AM

 
Gregory LaGrange
BetterPhoto Member Since: 11/11/2003
gregorylagrange.org
  It's possible. I'd think more likely if it's a lens that zooming or focusing makes the barrel extend in and out. But it would take a while to work it's way in.
I don't know if that lens is weather sealed.
The sand is going to be ground down over time, and it's going to wear away some of the metal or plastic that it rubs against. But that doesn't mean it won't always be a fully functional lens. Worst case scenario it interferes with the light touch of turning the ring or the focus motor bogging down. Best scenario is over time the crunch gets quieter until it's non intrusive dirt inside the lens.


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8/23/2008 2:37:39 PM

 
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