快樂牛郎

yes
$3 at any drug store

快樂牛郎

我乜水都唔用
用口氣
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用棉質布去抹
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sheep 發表於 2011/5/27 07:10

doesn't work if you got fingerprints or oil

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Any difference as compared to those brand name lense cleaning fluid that sold $20+  ...
lo_pak 發表於 2011/5/27 08:23

i haven't seen any brand name lense cleaning fluid for $20.  the one i use is branded and it's $8 for 10oz.  But I compared it with a $3 no-name and it appears the $3 is even stronger and more effective

but of course you still want to avoid wet based until it's necessary

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The $3 one you have just mentioned is rubbing alcohol or no-name lens cleaning flui ...
lo_pak 發表於 2011/5/27 08:41

90% - 98% rubbing alcohol

they say the higher purity the better
but i found 90% working better than 98%

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For rubbing alcohol most of them contain 70% isopropyl alcohol and 30% distilled wa ...
lo_pak 發表於 2011/5/27 09:33

I actually meant 90% isopropyl alcohol
if that's no longer "rubbing", then excuse my english

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Thanks...
BTW, posts on some photography forums suggest that don't use pure methano ...
lo_pak 發表於 2011/5/27 09:50

not sure about methanol but isopropyl alcohol is not a strong/corrosive chemical

Leica uses 100% isopropyl alcohol themselves on their gears