The best cleaner I’ve ever used is ROR (Residual Oil Remover, www.ror.net). It simply cleans better and with less effort than any other solvent, yet is non-toxic. A report on ROR’s site about cleaning camera lenses was hard to swallow until I saw the effect of cleaning a brand-new eyepiece and saw the difference in light transmission. Though it wasn’t a TeleVue, the eyepiece came from the factory with dirty lenses that showed an ever-so-slight yellow tint when looking through at a fluorescent light. After cleaning, the eyepiece had a noticeably brighter image without the yellow tint. I presume the eyepiece lenses simply weren’t clean when the eyepiece was assembled. I didn’t take it apart, but I’d bet the inside surfaces weren’t clean either.
– Michael Anderson, Telluride Film Festival
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