I've got a really odd photography related question. Does

>>3068542
They include a texturing agent in the paint. It's a lot like the textured finishes for things like garage floors.

>>3068542
It's not but it looks like vulcanite.

>>3068572
Wouldn't be surprised if it is vulcanite and if it had asbestos in it
>made in thailand
>sonys are notorious for overheating so it makes sense to put asbestos in the materials

I want to say it's a wrinkle finish, but it doesn't look coarse enough. Just calling it powder coated works.

>>3068542
speckled.

>>3068542
Google "Sigma crinkle finish"
hope that helps, fellow fedora wielding faggot

>>3068793
>Sigma crinkle finish
Sigma have the worst finish out there. Only the new ART series lenses are half decent. I had one of the old 400mm lenses with the finish that turned into tar after a few years. I had to completely dismantle it and then sandblast the entire lens back to metal to get rid of the glue like surface.

File: powder.jpg (83KB, 800x761px) Image search: [Google]

83KB, 800x761px

Closest I've gotten is this https://www.prismaticpowders.com/colors/PTB-2486/GRANITE-BLACK/

Looks like it might be a powder coating system?