The Thing less talked about...

Went outside at about 7 today, it was very windy and there was still snow on the trees. And yet a risk for severe thunderstorms is possible today. I was thinking of getting some nice photos but i might instead take photos of storms. I found out from someone online that the lens, my Mitakon 50, doesn’t have a perfectly flat focus plane; they ought to have done something about this. I’d like to rather get something more of a 100mm f/1 lens and create wide angle, stitched, images from such a setup!