Shiny thing on my sigma lens
- Thread starter Haqm182
- Start date
Inside the material? And it has not been there before? Sounds unusual... Have you tried contacting the the service center?
last i use my lens was 1 month ago. i put my DSLR and my lens inside my camera bag. my previous lens i keep inside my camera bag for more then 2 years so far my lens are ok. Only this sigma lens suddenly i want to clean and i found out a shiny thing.
The lens are still ok. there not effect the glass. but just want to know what is the shiny thing come from.
The lens are still ok. there not effect the glass. but just want to know what is the shiny thing come from.
I would recommend sending to the Sigma service center. (Think it is somewhere near Queensway shopping center, or ABC hawker center-The food is nice)
Meanwhile you may want to "suntan" the lens with the front and rear caps off (beware of fire hazard at the rear end of light concentration)
Meanwhile you may want to "suntan" the lens with the front and rear caps off (beware of fire hazard at the rear end of light concentration)
Not as a normal user, but there are a few people who did this DYI. The key is to have the right tools, steady hands and patience. The procedures can be found online.
Just keep in mind that any warranty is void and sometimes such lenses will not be accepted for servicing anymore.
Suntan means just putting the lens into the sun, exposing it to daylight and the included UV radiation. Fungus is known for its disliking of sunlight/UV, so it will stop any existing growth. @Ah Keong's suggestion is to kill any potentially existing fungus growth. Can't do any harm to do that.
Prices for servicing heavily vary between the different service centers and DIY specialists, like @fatigue . From what I gather, front elements are usually easy to remove. Usually, exceptions exist, though.
Prices for servicing heavily vary between the different service centers and DIY specialists, like @fatigue . From what I gather, front elements are usually easy to remove. Usually, exceptions exist, though.
Usually I would put lens that I seldom use (once every month) near the windows and let the sun shine on the front element through the lens before putting back to the dry cabinet.
Open the windows, please. Window glass blocks UV, together with the coating of the front element hardly any UV will go in.
Yes yes! Forgot to mention, must open the windows to let the sun ray come in. Remember to close the windows if rain is coming
Yes, please. Most of them are meant to block UV, but here we need the UV.
On a side note: once the filter is off, you can throw it. UV blocking was relevant for film photography. Today's sensors have a clearly defined optical range and most of them have filters in front anyway, Still, UV or clear filters are sold by eager salesmen to unknowing novices for 'protection', when a lens hood does a much better job.
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