The camera came equipped with a 50mm f/3.5 Cintar anastigmat triplet lens. It is a specific instance of the Dagor type double-meniscus anastigmat. The SNAP will use an optical setup called the three-mirror anastigmat. The design phase of the 5-mirror anastigmat was fully funded within the ESO budget. The donated OTAs feature a three-mirror anastigmat (TMA) optical design, without the tertiary mirror. When this element is a mirror, the result is a "three-mirror anastigmat". Many telescopes are three-mirror anastigmat. LSST will use a three-mirror anastigmat to cancel astigmatism&colon; three non-spherical mirrors. Paul Rudolph designed the Anastigmat with two lenses cemented in 1890. Unlike other triplets, the Leitz Anastigmat has the diaphragm between the first and second elements. The first Anastigmat was designed by Paul Rudolph for the Carl Zeiss AG in 1890. Virtually all good quality photographic lenses since circa 1930 are anastigmat corrected. It is a 6-element, 2-group, symmetric anastigmat design somewhat related to the Goerz Dagor.