For years, one of the biggest reasons to choose a mirrorless camera over a DSLR was to save weight. Not all of today’s mirrorless cameras follow that pattern – just look at the Canon EOS R3 and Nikon Z9 – but saving weight is still a high priority for many mirrorless photographers. That’s why I was so excited to test two of Nikon’s lightest mirrorless lenses recently: the 28mm f/2.8 and the 40mm f/2. The 40mm f/2 is what I’m reviewing today.