rech equipement pour A7R

PCnum · 30 Mars 2014

Bjr
J'aimerais utiliser le Sony A7R en cinéma
Je recherche un objectif manuel ou AF, lumineux permettant une faible profondeur de champ
Un grip adapté à la taille réduite au A7r.
Avez vous des suggestions ?

bcauchy · 31 Mars 2014

le SIGMA 85mm f/1.4 DG HSM EX Sony D

>>> Test terrain: Sigma 85mm f/1,4 EX DG HSM | Darth's Blog

excellent rapport prix performance (825 €)

>>> SIGMA 85mm f/1.4 DG HSM EX Sony D

Bertrand

Sigma AF 85mm f/1.4 EX DG HSM review verdict

The Sigma AF 85/1.4 EX DG HSM delivers a very good performance and is actually the cheapest 85mm f1.4 lens with AF. In some aspects its image quality reaches Nikon's AF-S 85/1.4G - at 60% of the price. My upcoming 85mm shootout will give you a detailed comparison.

To fully deliver its potential though you have to be very careful to focus optimally. But even then spherical aberrations / coma reduce contrast in the corners until stopped down to f2.8 for DX-bodies or f5.6 for FX-bodies. That is not a critical issue for some photos: high contrast in corners may not be crucial for portraiture or other types of photography that put one main subject in the center and benefit from fading-out the surroundings. Overall it is a worthy competitor to the Nikon AF-S 85/1.4G. So it'll come as no surprise to learn the Sigma AF 85mm f/1.4 EX DG HSM easily earns our Recommended award.
Good points
Very good sharpness even wide open on DX and FX bodies - if you can nail the focus.
Very good bokeh.
Good quality build.
Quiet and fast AF operation.
The cheapest 85mm f1.4 lens with AF.

Bad points
No image stabilization.
Focus has it's intricacies - see main review for details.
Spherical aberrations reduce contrast outside the center

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