« on: January 27, 2015, 12:26:30 PM »
I have no interest in this Zeiss lens however. TDP even mentions the Zeiss some has coma, not ideal for stars. I heard the Samyang has one up in this regard.Actually, the Zeiss has very little coma, except in the extreme corners. Even then, it's not much. That's the main reason I bought the Zeiss (for star pics), after hiring and testing a couple of other lenses (a Canon 24mm f1.4 and a Zeiss 21mm). Plus the hard infinity stop makes distance shooting easy, day or night.
I strongly suggest the following 2 links for people who want to check coma.
Comments like no coma or not much coma are next to useless if someone thinks about buying this lens for astrophotography. It is not a 400$ lens...
Also quoting Brian from TDP:
An interesting image quality note is that my Canon EF 14mm f/2.8 L II USM Lens produces images 1/2 to 2/3 stops brighter than the ZE 15 using identical settings under a clear sky.