>>3209856The manual for the lens just adds it up. It does not multiple them (pic). Though, they are labeled as +10 not 10x. That is a mistake on my part.
If this thing gets dropped the entire thing would break in many places. Most everything is plastic on a D3400, except the flanges. I'd still rather have all metal rings for everything. The plastic ones break all the time, during normal use without drops.
>dat lens curvaturelol