Rye Field Model MiG-21 in Jet Modeling Posted November 2 · Edited November 2 by Inquisitor 22 hours ago, Laurent said: It comes from a CAD render: there's a shadow. Are MiG-21's pylons angled downwards toward the front? If not then everything you've pointed out is just a consequence of the perspective of the renders, which are not looking perfectly straight at the front. The whole plane is very slightly angled downwards. The wing tanks and missile's fins are not lined up straight, you can see the fins at the top slightly bigger and the tank body 'round' cross-section turning into an oval hiding a bit of the bottom fins. The missile front fins are not lined with the rear ones. Also that slight downward angle would create that squarish shape from an oval/eliptic cross-section of the belly tank in an orthographic perspective. The horizontal tails would also look higher than supposed and the front edge to rear edge rake would create and illusion of dihedral. If you zoom in the parabollic curve of the canopy is an illusion created from the composite of two curves, the canopy curve and what looks to be the spine if it's a MiG-21 with spine, you can see the kink or point where they intersect around the middle height. I just thrown this together to illustrate.