- May 29, 2019
Let's see, "a new kind of super telephoto". Maybe a 500 f/2.8 DO with a carbon fiber housing and an acrylic front element coming in at around 5 lbs. That would be a first, but would require a flat glass protective plate to keep the acrylic element from getting scratched (although plastic lens eyeglasses with hard coatings are remarkably tough). The RF 100-500 is 15% lighter than the EF 100-400 L II, so light weight seems to be in at Canon for everything but penis envy wide aperture primes.