Zdjęcia od Amateur Photographer (AP) https://www.amateurphotographer.co.u...gallery-119697 Powyciągam linki bezpośrednie tu na forum.

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Tam była podpinana wersja testowa, jak masz u siebie wersję retail no to może pracuje już lepiej. Musi bo wersje testowe miały problemy z AF.

Carrying out several focusing tests and swapping between different lenses made me aware of an odd AF phenomenon, where if you leave the camera switched on, remove the lens and then reattach it, it refuses to autofocus again until the AF point is highlighted using the AF point selection button and the shutter is half pressed. One way to get around this was to make sure the camera is switched off between changing lenses – this isn’t exactly ideal for the wedding and portrait photographers the lens is aimed at, who swap lenses frequently and work quickly. Since testing the lens, I’ve been told this issue will be rectified by new firmware, which will be added to all lenses before shipments are made.
Źródło: https://www.amateurphotographer.co.u...iJ9hoDAsZJ8.99

AF also seems slightly unhappy at very close distances, even for example in the image of the solitary rose in the sample shots. The AF steadfastly refused to lock onto the rose, so manual focus had to be used (Samyang has confirmed they know about this issue and are fixing it before the lens is released on general sale). Generally, at normal distances, AF is positive, accurate and silent.
Źródło: https://www.ephotozine.com/article/s...f-review-32432

http://www.kubacichocki.pl/test/samyang85af/sy85vs2.jpg

http://www.kubacichocki.pl/test/samyang85af/sy85vs1.jpg

Niezłe jaja, Tamron ze światłem f/1.8 (którego uważałem do tej pory za króla ciemności) jaśniejszy (mniejsza winieta) od Samyanga ze światłem f/1.4. To jest cena jaką musiał zapłacić Samyang za miniaturyzację tego obiektywu?

Ma to pokrycie w słowach recenzji obydwu obiektywów zrobionych przez AP.

https://www.amateurphotographer.co.u...-8-di-vc-usd/5

Some vignetting is visible wide open, with the corners of the frame 1.3 stops darker than the centre. However the very gradual falloff profile means that this is visually not unattractive; indeed it can often add to the look of your shots. Stop down to f/2.8 and the vignetting practically disappears.
https://www.amateurphotographer.co.u...-4-ef-review/6

Using the lens wide open at f/1.4 results in the corners of images appearing about 1.6EV darker than the centre. By f/2.8 corner shading is less severe and unrecognisable in real-world images. At the time of testing a lens profile was unavailable, but the profile for Samyang’s 85mm f/1.4 AS IF UMC lens was effective at correcting corner shading.
Co ciekawe najlepiej w tej kwestii (winietowanie) wypada manualny Samyang 85mm f/1.4 IF MC.

Shading follows the familiar pattern for these 85mm lenses, with a darkening of around 0.6EV in the corners. This is largely reduced by f/2.8, at which point the very edges of the frame are around 0.16EV darker.
Źródło: https://www.amateurphotographer.co.u...-lenses-5420/4