Sigma 15mm F1.4 DG DN DIAGONAL FISHEYE – Sony E

The f/1.4 aperture on this lens is a game-changer for astrophotography—I captured the Milky Way with stunning clarity and minimal noise. It’s surprisingly sharp edge-to-edge even wide open, which I didn’t expect from such an extreme wide-angle. The built-in filter slot is a thoughtful touch for ND w

Getting the whole Milky Way in one frame was a revelation—the corner-to-corner sharpness at f/1.4 is unreal. My only minor gripe is that the front filter slot feels a bit fiddly to swap on a cold night.

The f/1.4 aperture makes handheld night shots possible without cranking the ISO too high, though the autofocus hunts a bit in very dim light. Impressed by how sharp it stays across the frame even wide open.