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Are optical coatings that sensitive that warm water might bother them? I'll have to treat my lenses differently.
by buildbot 4y ago
Are optical coatings that sensitive that warm water might bother them? I'll have to treat my lenses differently.
- MikeKusold 4y agoI've ruined my coatings by wearing them in the sauna before. Sauna temps tend to be around 180.
- stereo 4y agoThe anti-reflective coating expands and contracts differently with heat than the plastic lens underneath. A big temperature difference will cause it to crack. So don't use ice cold water, use water that's at room temperature, which is usually what comes out of your cold tap.
- OJFord 4y ago> water that's at room temperature, which is usually what comes out of your cold tap. Is that really your experience where you live? In mine, the cold tap is cold - once allowed to run through whatever's in the pipes in the building, since it's come from underground.
- reaperducer 4y agoIt depends on where you live and the time of year. I've lived places where in the winter, the tap water is just a couple of degrees above freezing. I've lived in places where in the summer I've measured the tap water at over 90 degrees. He must live somewhere that doesn't get to any real temperature extremes.
- enasterosophes 4y agoYeah, I used to wash my glasses in hot water. I didn't notice an instant change, but it noticably degraded their quality after a while. Water straight from your cold tap is the way to go.