It is very difficult to design a wide field, superfast, super sharp and coma free photo lens, no such lens has been ever designed...until now: the new Sigma Art 40mm 1.4... this lens has it all.
The size of a 135mm lens, 16 elements, super sharp even wide open with FF sensors, very low coma in the corner even with FF sensors, close to zero chromatic aberrations... this is a dreamlens for wide field astrophotography, should be amazing with Ha and other filters.
Price tag of this dream: $1400.=/ Euro 1250.=
Bench test: https://www.lenstip....resolution.html
Edited by garret, 14 December 2018 - 03:34 PM.