PSA: Stop using generic lens cleaner on old coated glass

I had a client bring in a 1970s Pentax with haze, and the previous shop used a standard alcohol spray that started eating the coating. It left a permanent cloudy patch right in the center. What's your go-to safe cleaner for vintage single-layer coatings?

2 comments

2 Comments

parker_campbell1mo ago

Ugh, learned that one the hard way too. I just use a drop of dish soap and warm water now, works like a charm.

dianab681mo ago

Oh man, why do we always have to learn these things by making a huge mess first? I once used something way too strong and basically created a sticky science project on my counter. Dish soap is a total lifesaver for sure. It's funny how the simple fix is usually the best one.