so somewhere along the lines of re-structuring my setup, I have the following travel setup planned:
Sony 85mm F2.8 + LAEA3
so this covers 12-85mm range, and includes two large aperture lens at 25mm (F2) and 55mm (F1.8). This will cover all my needs, but of course this setup includes no zoom...
lately i have been toying with the idea of have sigma 18-35mm F1.8 in the set up... in place of the Batis 25mm. This will:
1, increase bulk and weight (33Xg to 8XXg)
2, half my cost.
3, increase F2 to F1.8
4, i often crop to 16:9 and 21:9 ratio so i think i can get away shooting at 25mm on the 18-35mm. i.e. i will have zoom from 25-35mm.
5, i might lose tiny bit of IQ (although may just be losing that zeiss look. if you believe in DXOmark score, sharpness-wise, the 18-35mm actually preforms better than sigma 35mm ART; which, in term, does slightly better than the FE55mm).
6, filter size gone up. in the original plan everything is do-able with just two ND filters (58mm and 67mm + step up ring).
7, but...i get ...zooooooooom!
so...question here, am i going crazy to ditch Batis for Sigma?
PS: my wife uses a A6000 and she has no large aperture lens, so 18-35mm makes sense on her camera too.