Awarded a Technical Oscar in 1977, Canon’s K35 primes have been shooting studio features for more than four decades. Originally designed to compete with Zeiss’ S35-format Super Speeds, they’ve exploded in popularity these last few years because of their ability to cover full-frame sensors. That feat is owed to their basis in Canon’s legendary FD still-photo lenses — an important detail when looking for additional focal lengths to fill out the core five-lens set.