Involvement:General (knows how to use it) - Ownership:1 week to 1 month
Looks to be very clear glass. I bought one, and it has much, much less molding defects than the one I got from one another place with a word "Good" in its name. Used it in a homemade flashlight.
It's not perfect, but I don't think, that molded lens could get much better. The outer rim is not round, but has some irregularities, that makes it more difficult machine a tight fit housing.
It is NOT 75mm diameter, but more like 78mm. The thickness is also almost 30mm, not 26mm. This may not be a bad thing, if you don't plan to put it in some pre-made housing. It's really sadly, that I wasn't able to purchase this lens the first time because of issues with Paypal express checkout, so I pretty much wasted my money on some bad quality lens from another store.
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