There were six Apollo missions that landed on the Moon. Each mission was equipped with at least two Lunar Surface Hasselblad cameras left on the lunar surface before ascent. But the total number of Hasselblad cameras should be greater than 12, these list of photographic equipment used for Apollo 16 counts 3 cameras left on the Moon. The third camera was equipped with a 500 mm lens, the first two with a 60 mm lens.
How many Apollo missions used a Lunar Surface Hasselblad Camera equipped with a 500mm Lens?