Essai du Tamron 17-35 mm f/2,8-4 Di OSD sur Canon EOS 5D Mark III et EOS 50D par Arkadiusz Olech et Maciej Latałło pour LensTip.Com :Tamron 17-35 mm f/2.8-4 Di OSD review - LensTip.com
Points forts :
- construction comportant des joints
- excellente qualité d'image au centre
- bonne qualité d'image sur les bords du capteur APS-C/DX,
- pas de problèmes graves d'aberration chromatique longitudinale
- aberration chromatique latérale légère
- aberration sphérique pas particulièrement gênante
- faible vignetage sur capteur APS-C/DX
- bonne performance en contre-jour
- très faible astigmatisme
- pas de problèmes graves de coma
- autofocus précis
- 5 ans de garantie
- bons rapports qualité/prix et performances/prix.
Points faibles :
- vignetage important en 24x36
- distorsion perceptible aux plus courtes focales
- autofocus lent et bruyant.
When it comes to the optical business, it is difficult to surprise somebody like me, a person who has tested thoroughly half a thousand of lenses. Careful readers of my tests already know that, although I appreciate the performance of uncompromising devices, constructed without any limitations when it comes to weight, dimensions and the price, I am far more impressed by instruments which, despite some limitations, still manage to perform exceedingly well. The Tamron 17–35 mm f/2.8–4 Di OSD should be counted among them: its list of advantages is really impressive and the list of flaws rather short. Two of the flaws, namely distortion and vignetting, were easy to predict. The only negative surprise was the noisy, whirring autofocus motor, a device like something from the previous era. Fortunately it was also accurate so we didn’t have more reasons to complain.
My fascination with this lens has also a different source. I travel a lot and often attend different photographic events. As a keen landscape and astrophotographer I don’t like heavy devices. Even if I am impressed by the performance of such lenses as the Tamron 15–30 mm f/2.8 or the Nikkor or the Sigma 14–24 mm f/2.8, I don’t think I would like to buy them - they seem too burdensome, too big, and they don’t cooperate with normal filters. When compared to these, the Tamron 17–35 mm f/2.8–4 Di OSD is small, lightweight and noticeably cheaper. It also features a 77 mm filter thread. To be honest I wouldn’t mind to make friends with it for a longer period of time.