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04/28/2005 03:07:39 PM · #1 |
My niece, who got tired of posing and decided to throw sand at my lens instead. She's 20 months old.
On a more serious note, any recommendation on lens cleaning routines? I'm using a regular kit, but am not 100percent sure I'm not damaging the glass (uv filter, not directly on the glass) instead.
Also, any specific tip on maintaining polarizer filters? Mine seems to get smudged very easily, and am wary of touching it. Thanks.
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04/28/2005 03:19:20 PM · #2 |
VERY IMPORTANT... leaving the actual glass for last and do not remove from the camera until finished - do not use compressed air cans to blow it off as you can easily blow sand inside ring clearances and movements... try your best to brush off using gravity in the favor of every movement or ring etc several times each position. Then being extremely gentle move the focus ring or zoom movement so that the majority of the lens bodies are exposed and repeat the brushings. Then test every movement of the focus or zoom ever so gentle many times. If there is no feeling of grit and it feels 100% normal to you, then you can blow the glass.
Then you should get lens cleaning fluid and with the lens glass pointed downward sqirt it off liberally, blow it off with a full can of compressed air while its wet and repeat at least 3x. If you dont even the smallest non-visible grit will cause scratches [big ones]. then totally dry it 100% using a blow dryer on "NO HEAT". At which point gentle use a lens brush - blowing off the brush with the canned air several times. Look at it with a loupe with the glass reflecting a bright light for grit, dust or scratches - and then let it sit over night.
The next day if all is perfectly normal, you can use regular glass cleaning methods... or of course just hose it off [just kidding].....
John |
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04/28/2005 03:19:57 PM · #3 |
canned air comes in handy, for me, but I use it sparingly, and probly not with sand.
a fine brush, lens friendly cloth, lens cleaning solutions from your local photo store are always good tools.
Message edited by author 2005-04-28 15:21:47.
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04/28/2005 03:21:21 PM · #4 |
| I have no experience in this area, but I'm wondering if using a vacuum cleaner attachment might help suck the sand out? It seems safer than trying to blow it, which could lodge it within the lens. Just a thought... |
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04/28/2005 04:06:10 PM · #5 |
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04/28/2005 04:45:45 PM · #6 |
Originally posted by alansfreed:
I have no experience in this area, but I'm wondering if using a vacuum cleaner attachment might help suck the sand out? It seems safer than trying to blow it, which could lodge it within the lens. Just a thought... |
I have an attachment set for a vacuum cleaner which has a small hose and a set of small brushes and crevice tools designed for cleaning computers. |
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04/28/2005 04:52:26 PM · #7 |
Originally posted by GeneralE:
Originally posted by alansfreed:
I have no experience in this area, but I'm wondering if using a vacuum cleaner attachment might help suck the sand out? It seems safer than trying to blow it, which could lodge it within the lens. Just a thought... |
I have an attachment set for a vacuum cleaner which has a small hose and a set of small brushes and crevice tools designed for cleaning computers. |
Styrofome or plastic cup with a straw punched though the base.
Invert and use as a small nozzle.
Also usefull for hoovering keyboards.... |
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04/28/2005 11:42:24 PM · #8 |
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04/29/2005 12:58:48 AM · #9 |
Write it off and go get yourself an upgrade.
Thats just the business case you were looking for to convince your spouse. :)
bazz. |
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04/29/2005 09:29:07 AM · #10 |
| put a tissue over the end of a straw and suck on the other end of the straw, use like a tiny vacuum cleaner to get those pieces of sand off. |
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04/29/2005 11:03:51 AM · #11 |
Working in a low humidity environment helps to dry out the small bits of moisture that you can't even see.
I wash my filters and polarizers in the sink using warm water and mild soap. Drying them streak free is accomplished with a microfiber cloth after shaking off as much moisture as I can. This may not be the way to go if you have the more expensive coated filters.
The most important thing is to treat all the glass surfaces gently, applying the lightest of pressure. Let the liguid dissolve and carry away the dirt instead of scrubbing it away.
And get a big blower instead of relying on the little blower-brush that comes in the standard kit, they don't cost much and do a much better job.
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