AndiS Loc: Jakarta, Tangerang Selatan & Bali, Indonesia

I always keep my cameras and lenses in a dry cabinet for at least a couple of years and set the hygrometer moisture level between 40 - 50.

I just recently found at least 3 spots on my sx50hs lens whilst my other lenses are fine.

I love my sx50hs very much, I hope I didn't ruin it because of a wrong moisture level setting.

Did I set the right moisture setting?, please advise.....

Thank you

(Download)

Linda From Maine Loc: Yakima, Washington

Have you taken a picture with it?

chaman

I doubt very much the picture quality will be affected.

AndiS Loc: Jakarta, Tangerang Selatan & Bali, Indonesia

Since I found out the spots I haven't taken any pics yet.
I was told to shoot the clear sky and see wheter the spots are there, is it true?.

Thanks Linda.

AndiS Loc: Jakarta, Tangerang Selatan & Bali, Indonesia

I will check it out chaman, I hope it is not affected, thanks.

dpullum Loc: Tampa Florida

You living in Jakarta & Bali, Indonesia and me, living in Florida are no stranger to moisture problems. When I moved south from Michigan, I found out what it was to have green shoes in the closet!! Here in Tampa, I air condition all year round to keep home moisture down. Never had fungi on lenses problems. Nor should you with that heated cabinet.

No, the moisture content is low enough that mold does not grow. Certainly mold does not have a special ability to grow on Canon lenses. Do you know if they were NOT there when you bought the camera. They are small, perhaps there was a technician with dandruff and it affected the coating. That is a serious statement. Similar problems happen with many coating operations... my experience ... Organic-ceramic coated Titanium Electrodes. During manufacturing the coating covers material covers the dandruff skin flake and then in use causes a defect where the coating comes off.

Of course assuming that these are internal not on lens most forward surface.

You have taken the precautions and successfully protected your other lenses (assumed) and so there must be another rational reason for the spots. Above is only one possible of many; I do not think you are at fault.

I took the liberty of cropping your photo treating with Topaz deNoise, Detail, Clarity.

References:
"Keep optical components in a dry place with a relative humidity of less than 65% and with plenty of air circulation. Air conditioners and dehumidifiers are very helpful, but must be used 24 hours a day since sudden changes in temperature and humidity promote the growth of fungus."
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3864060/

and from Zeiss:
http://www.zeiss.com/camera-lenses/en_us/website/service/fungus_on_lenses.html

AndiS Loc: Jakarta, Tangerang Selatan & Bali, Indonesia

Hi dpullum,

Greetings from Bali and thank you soooo much for giving me such a long and complete explanation about my lens problem. It is really appreciated...
I am glad that I have the right moisture level setting on the dry cabinet.

Once again, thank you very much for taking your time.

Andi.






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