Sigma 56 worth setting if I have already have the Sony 50 OSS?

Started Apr 27, 2019 | Polls thread
Joshua1209 New Member • Posts: 16
Re: Sigma 56 worth setting if I have already have the Sony 50 OSS?

Htbaa wrote:

dgsjsj wrote:

dgsjsj написал (а):

α6000 Фаза AF Точечный охват: 179 точек.
Контрастные точки автофокуса: 25 точек.

α6500 Phase AF Точечный охват: 425 точек.
Контрастные точки автофокусировки: 169 точек.

α6400 Фазовая автофокусировка: 425 точек.
Контрастные точки автофокуса: 425 точек.
-------------------------------------------------- --------------------------------

Камера α6400 с байонетной матрицей E и APS-C

425 точек автофокусировки с определением фазы

Плотно распределенные точки фокусировки охватывают около 84% площади изображения, способствуя захвату объекта.

https://www.sony.com/electronics/interchangeable-lens-cameras/ilce-6400

Operating conditions of the Sony “α6400 (ILCE-6400)” and SIGMA’s interchangeable lenses for Sony E-mount

Thank you for purchasing and using our products.

We would like to share results of our investigations regarding the operating conditions of the Sony “α6400 (ILCE-6400),” released by Sony Corporation on February 22nd, 2019, and SIGMA’s interchangeable lenses for Sony E-mount.

With the SIGMA’s interchangeable lenses for Sony E-mount, both the AF and the AE work inter-connectedly, and they are compatible with the in-camera Lens Aberration Correction function:“Lens Correction” (“Peripheral illumination correction”, “Chromatic aberration of magnification correction”, “Distortion correction”).
*SIGMA 19mm F2.8 DN | Art, SIGMA 19mm F2.8 EX DN, SIGMA 30mm F2.8 DN | Art, SIGMA 30mm F2.8 EX DN, and SIGMA 60mm F2.8 DN | Art are not compatible with the Fast Hybrid AF.

In addition, we found some phenomena particular to some products listed below.
Regarding these phenomena, we are going to release a firmware update for improvement. The availability of the firmware will be announced on a later date.

Posted onApril 25, 2019

https://www.sigma-imaging-uk.com/firmware-a6400-042519/

Has nothing to do with the 16mm f/1.4, 30mm f/1.4 or 56mm f/1.4 though. The old f/2.8 trio is mentioned as not being compatible with Fast Hybrid AF, which has always been the case.

The Sigma 30 f2.8 has slower but more accurate AF than the newer Sigma 30 f1.4.

It also is easier to use the manual focus with the f2.8.  The old Sigmas work well on A6000.

All it's saying is that all should work well, except for a couple of lenses which will be getting a firmware update (which are listed in the article).

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