Fungus on Lenses
Posted: Wed Apr 10, 2013 5:57 pm
Full details at Carl Zeiss website here.
Fungus On Lenses
Fungus means an Infestation of optical instruments with fungus spores which germinate and produce more spores.
Lens surfaces are irreparably damaged by metabolic products of the fungus (e.g. acids). Its damage ranges from cloudiness to opacity caused by the film. The Carl Zeiss T* coating has no significant influence on fungus growth or generation of spores.
Where does fungus come from?
Fungus spores are everywhere and germinate under suitable environmental conditions:
Growing conditions
Relative humidity of at least 70% (more than 3 days)
No or little airflow
Darkness
Nutrients (textile lint, traces of grease, varnish, dust and dirt)
Temperatures between 10 and 35°C
Fungus On Lenses
Fungus means an Infestation of optical instruments with fungus spores which germinate and produce more spores.
Lens surfaces are irreparably damaged by metabolic products of the fungus (e.g. acids). Its damage ranges from cloudiness to opacity caused by the film. The Carl Zeiss T* coating has no significant influence on fungus growth or generation of spores.
Where does fungus come from?
Fungus spores are everywhere and germinate under suitable environmental conditions:
Growing conditions
Relative humidity of at least 70% (more than 3 days)
No or little airflow
Darkness
Nutrients (textile lint, traces of grease, varnish, dust and dirt)
Temperatures between 10 and 35°C