Samyang FE 14 f/2.8 autofocus

[Mlm35]

Mes remarques ne concernait que la version manuelle de cet objectif.
Je ne connais pas la version AF.

En vidéo d'ailleurs je ne vois pas l'intérêt d'un AF avec ce type de focale.

Pas trop compliqué quand même :

En cherchant sur le BC, il y en a un qui correspond à ta recherche :
https://www.leboncoin.fr/image_son/1729039877.htm/

Pour à peine + cher chez amazon : (les photos, comme d'habitude ne correspondent pas à la monture Sony, mais il est bien précisé Sony E).
L'avantage avec Amazon, c'est que si problème on peut renvoyer l'objet pendant 1 mois, ça laisse le temps de faire des essais et de valider l'achat.

https://tinyurl.com/rsg6g98

Oui, merci, en pleine reflexion.

J'ai trouvé un 14mm af dans ma région, à 250 d'occaz, garantie 6 mois.
Je vais aller m'essayer pour tester la map à l'infini et juger du bruit du moteur AF, qui peut effectivement etre totalement redhibitoire (ce n'est pas non plus un objo video)

[Mistral75]

Essai du Samyang AF 14 mm f/2,8 FE sur Sony Alpha 7R II par Klaus Schroiff pour Optical Limits :

Samyang AF 14mm f/2.8 FE - Review / Test Report

Commentaire introductif de Klaus sur le forum : "Ok for such a lens but not superb."

Qualité optique : 2,5/5
Qualité mécanique : 3,75/5
Rapport performances / prix : 4,5/5

In the introduction, we asked the question of whether a 14mm f/2.8 and a low price tag 500USD/EUR is a winning combination. Most users want their ultra-wide lenses to be sharp way into the far corner. And that's where the Samyang AF 14mm f/2.8 FE struggles. The center quality is sharp enough but the corners are soft at f/2.8 and f/4. Now whether this is really a relevant shortcoming depends on that you are shooting. If you use large apertures for shallow depth-of-field images only, it'll be a non issue. For astrophotography it's not ideal though. Stopped down to f/8 the overall quality is good for such a lens. The amount of vignetting is relatively well-controlled but clearly visible unless image auto-correction is activated. Image distortion is heavy in RAW files but, once again, this can be corrected in post. Lateral CAs are Okay for such a lens. We haven't formally tested the quality of the bokeh. When looking at our sample images taken at f/2.8, you may agree that the bokeh is quite rough. However, let's be fair here - this applies to the vast majority of ultra-wide lenses.

In terms of build quality, the Samyang lens is quite convincing. Nothing wobbles and most of the lens is made of metal. We aren't a huge fan of the satin finish but that's largely a matter of taste. The lack of weather-sealing is a bit unfortunate but not surprising in this price class. The AF is plenty fast for an ultra-wide lens, and it's noiseless, too.

Overall we aren't overly thrilled by the optical performance. However, you also have to recognize the fact that the price point of the Samyang AF 14mm f/2.8 FE is extremely low for a such lens. If you own a 16/24 megapixel full-format or APS-C camera you also won't really notice much of an issue (assuming you get a good sample) - that's also something to keep in mind.

[Mistral75]

Mise à jour en version 25 du logiciel embarqué du Samyang AF 14 mm f/2,8 FE :

https://www.samyanglens.com/en/about/notice-view.php?seq=1165

• Improved autofocus performance on video on Sony α7SⅡ, α9
• Improved aperture controls in video mode (P mode and S mode)
• Improved stability of operation

[Mistral75]

Mise à jour en version 26 du logiciel embarqué du Samyang AF 14 mm f/2,8 FE :

https://www.samyanglens.com/en/about/notice-view.php?seq=1605

• Improved AF-C performance on Sony α7CII, α7CR, α6700, and FX6
• Added AF Assist function

Page de téléchargement : https://www.samyanglens.com/en/support/support-download.php?type=3&model=SONY