Obiettivo Tokina FíRIN 20mm F2.0 FE AF

Tipo di Prodotto

 Obiettivo

Immagini di prodotto (clic per ingrandire):

Specifiche

Marca

Tokina

Modello

FíRIN 20mm F2.0

Versione

Tipo di acquisto

Unica soluzione

Attacco	Sony E
Sotto-tipo attacco	FE (Formato pieno)
...per sensore / ritaglio	Formato pieno 1.00x
Focali
Focale nominale	20 mm.
Focale equiv. (35mm)	20 mm.
Rapporto di Zoom	1x
Zoom motorizzato	No
Zoom si estende	No / n.a.
Moltiplicatori	No
Diaframma
Massima Apertura	f/2
Lamelle diaframma	9
Anello diaframma	No
Diaframma continuo	No
Anello configurabile	No
Messa a fuoco
Autofocus	Sì
Fuoco interno	Sì
Trasmissione fuoco	Indiretta
Info distanza fuoco	No
Min distanza fuoco	28 cm.
Max ingrand. (ott.)	0.10x
Max ingrand. (eff.)	0.10x (equiv. in 35mm)
Costruzione
Stabilizzazione	No
N° di lenti/gruppi	13/11
Elementi speciali	2 asferici, 3 a bassissima dispersione
Asferici	2
A dispersione super bassa	3
Filtro frontale	62 mm.
Tropicalizzazione	No
Contatti elettrici	Sì

OpticalLimits 7.8/10
[Tested on 42 MP camera] It is faster than zoom lenses [...] The most impressive quality is the sharpness in the wider center zone even at large aperture settings. However, the image corners are soft at f/2. The field curvature, often a problem with ultra-wide lenses, is very moderate. Image distortions, as well as CAs, are very low. The vignetting is a bit on the high side at f/2.
Sony Alpha Blog
The Tokina Firin 20mm F2 AF is an excellent wide angle lens for photography. As of F2 in the centre as of F2.8 in the corners, overall better than the Zeiss Loxia 21mm F2.8 everywhere in term of sharpness [...], build quality is good [...], distorsion is low as well as CA, good color rendition. The Tokina Firin AF motor is rather noisy and not as fast as the supersonic motor that equip most Sony lenses. [...] Not so great for fast actions and for video in AF.