2d 35On full-frame cameras, Nikon AF Nikkor 35mm 1: 2D gives a viewing angle of 66 degrees, which allows you to use Nikon AF Nikkor 35mm 1: 2D as a standard lens for many tasks. Often 352D3D perovskite heterojunctions represent a promising approach to enhance the efficiency and stability of perovskite solar cells (PSCs).