Nikon (under the Mirror-Nikkor and later Reflex-Nikkor names) and Canon both offered several designs, such as 500 mm 1:8 and 1000 mm 1:11.
Både Nikon (under Mirror-Nikkor og senere Reflex-Nikkor navne) og Canon tilbyder flere design, såsom 500 mm 1:8 og 1000 mm 1:11.