First of all I have to admit that I don’t own any of those lenses. This is more a collection and comparison of the information available on the internet.
At first glimpse it’s clear that these are all very different lenses, technically quiet hard to compare. But from a buyers side of view it’s obvious to compare them!
All lenses are primes and native to the Sony E-Mount and full frame.
At the moment there are six different lenses on the market. (German prices 5/15/16)
Zeiss Batis 2.8/18 – AF / 330g / 95mm * 100mm / ~1500€
Zeiss Batis 2/25 – AF / 335g / 92mm * 81mm / ~1270€
Zeiss Batis 1.8/85 – AF / 475g / 105mm * 81mm / ~1200€
Zeiss Loxia 2.8/21 – NOAF / 394g / 85mm * 62,1mm / ~1500€
Zeiss Loxia 2/35 – NOAF / 340g / 66mm * 62,1mm / ~980€
Zeiss Loxia 2/50 – NOAF / 320g / 66,2mm * 61,1mm / ~840€
Here’s what the internet thinks about them…
Jay SonyAlphaLab – Zeiss Loxia 35mm F2 Lens Review – Full Frame E Mount
Steve Huff – Zeiss Loxia Lenses for Sony E Mount. Full Frame. 35 and 50 f/2
passportsandlenses.com – zeiss loxia 2.8/21 review