DxOMark reviewed Sony Carl Zeiss Distagon T* FE 35mm f1.4 ZA lens.
Let me give you the coclusion:
Costing $1,598, the FE 35mm f1.4 certainly fits into the pro category for photographers demanding the best results from the Sony full-frame A7 series. With excellent optical construction, including three aspherical elements, it’s a pretty hefty lens, however, that measures 112mm in length and weighs 630g. If you’re looking for top-quality low-light shooting, you’ll need all that heavy glass, however, and it helps the FE 35mm f1.4 deliver some excellent results. The “fast” f1.4 aperture is great for working in low-light and the 9-bladed circular aperture will create some attractive background bokeh effects, too. Videographers will also appreciate the “stepless” aperture control that prevents unwanted clicks in the sound.
Achieving a high DxOMark score of 38 points, the FE 35mm f1.4’s performance is excellent and ranks as the second best FE-mount lens we’ve tested. Sharpness and Transmission results are particularly strong, and with decent results in the other Lens Metric categories, it's an impressive all-round excellent performance from the FE 35mm f1.4. Sharpness at the maximum f1.4 aperture is very good, but if you can close down a stop or two, then outstanding edge-to-edge sharpness is possible. Cheaper FE-mount zoom lenses that also cover 35mm are available, but they don’t offer anything like the same level of sharpness or that “fast” maximum aperture the pros demand.
For the detailed review, visit DxOMark site.