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'Crystals' inside my Canon EF 100mm Macro USM Lens

Started Apr 28, 2015 | Discussions thread
SarahBK
OP SarahBK Regular Member • Posts: 184
Re: 'Crystals' inside my Canon EF 100mm Macro USM Lens

Nigel Richards wrote:

Coming late to this thread, its fungus, I buy a lot of lenses in the UK and see fungus in lenses on a regular basis, get it cleaned before it etches the glass.

I get the impression thats its usually caused by a storage issue. Probably it was already there when you checked the glass.

Good luck

Perhaps... though it must have grown within a very short time period. Thankfully exposure to the sun and keeping it packed with numerous silica gel sachets as soon as I noticed them meant it hasn't gotten worse than it was when I first noticed them.
Ironic that this had to happen while in the UK, and in a warm/humid country back at home this sort of thing was never a problem for the two years I owned the lens
Indeed - since the last comment I've gotten in touch with a company in Glasgow and will be taking the lens over for inspection (and hopefully cleaning if it isn't going to cost a huge amount) in a couple of months' time.

 SarahBK's gear list:SarahBK's gear list
Canon 6D Mark II Canon EF 100mm f/2.8 Macro USM Canon EF 70-200mm F4L IS USM Canon EF 40mm f/2.8 STM Canon EF 24-70mm F4L IS USM +2 more
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