12-21-2011, 08:43 AM
[quote name='Frank' timestamp='1324433695' post='13961']
Thank you very much, BC. The way you suggested sounds reasonable. It also agrees with the following article: [url="https://www.schneideroptics.com/pdfs/whitepapers/lens_cleaning.pdf"]lens cleaning[/url], except that you said tissues are bad. I guess that people use tissues just because tissues are cheap and convenient: you can use a tissue once then discard it.
I wonder if it is necessary to clean the lens with cleaning fluid each time. If the glass does not look that dirty, why not try to wipe it with a cloth moistened by distilled water? Is distilled water bad for the glass? Frankly I am always nervous about chemical fluid for the caoting of the glass or other parts (e.g. plastics) of the lens.
Some people also recommended to use a "lens pen", but I never used it. What is your opinion on a lens pen?
Regards,
Frank
[/quote]
lens cleaning fluid is a fancy glass cleaning fluid with ingredients that all evaporate and dissolves grease, Nothing aggressive in there.
You can not harm lens coatings easily, they are metals evaporated on the glass under high temperatures. They are hard and durable.
I have a tiny Zeiss lens cleaning fluid spray that I use for 5 years now, and it will suffice for years to come. You use such a tiny amount per time (I clean several lenses in one go with a tiny amount of spray on a corner of the cloth) that thinking of using water makes little sense, Distilled water does not dissolve greasy finger smudges that easily, so I can't recommend that idea over lens cleaning fluid.
I never used a "lens pen", and I can't see it have an advantage over my standard brush and/or cloth method, which takes seconds.
Thank you very much, BC. The way you suggested sounds reasonable. It also agrees with the following article: [url="https://www.schneideroptics.com/pdfs/whitepapers/lens_cleaning.pdf"]lens cleaning[/url], except that you said tissues are bad. I guess that people use tissues just because tissues are cheap and convenient: you can use a tissue once then discard it.
I wonder if it is necessary to clean the lens with cleaning fluid each time. If the glass does not look that dirty, why not try to wipe it with a cloth moistened by distilled water? Is distilled water bad for the glass? Frankly I am always nervous about chemical fluid for the caoting of the glass or other parts (e.g. plastics) of the lens.
Some people also recommended to use a "lens pen", but I never used it. What is your opinion on a lens pen?
Regards,
Frank
[/quote]
lens cleaning fluid is a fancy glass cleaning fluid with ingredients that all evaporate and dissolves grease, Nothing aggressive in there.
You can not harm lens coatings easily, they are metals evaporated on the glass under high temperatures. They are hard and durable.
I have a tiny Zeiss lens cleaning fluid spray that I use for 5 years now, and it will suffice for years to come. You use such a tiny amount per time (I clean several lenses in one go with a tiny amount of spray on a corner of the cloth) that thinking of using water makes little sense, Distilled water does not dissolve greasy finger smudges that easily, so I can't recommend that idea over lens cleaning fluid.
I never used a "lens pen", and I can't see it have an advantage over my standard brush and/or cloth method, which takes seconds.