What's the difference between a resin lens and a traditional lens?
Resin lenses are more likely to be scratched than glass lenses. It's no problem to wipe glass lenses with lens paper, but it's easy to scratch if you use lens lenses to wipe them. So, be careful of resin lens, general dust blowing balloons blown off, do not contact lenses; stubborn dust with balloons special brush brush, brush it off occasionally to wipe with alcohol cotton anyway, but not regularly.
Neither professionals nor photographers in general like the resin lenses. Therefore, the manufacturer will not indicate in the manual that it is made of resin lenses. In addition, there is no mandatory standards in this regard, they will not mark.
I heard that 710 is also used resin lenses, resin lenses in optical properties and glass lenses vary little, mainly the surface hardness is not high, should avoid unnecessary friction.