Essai du Tamron 18-400 mm f/3,5-6,3 Di II VC HLD sur Nikon D7000 par Maciej Latałło pour LensTip.com :
Tamron 18-400 mm f/3.5-6.3 Di II VC HLD review - LensTip.comPoints forts :
- gamme de focales très universelle
- bonne qualité d'image au centre
- correction convenable de l'aberration chromatique longitudinale
- pas de problème d'aberration sphérique
- correction de coma raisonnable à la distance focale la plus courte,
- faible vignetage aux plus longues focales
- stabilisation efficace.
Points faibles :
- faible qualité d'image à pleine ouverture sur les bords sur toute la plage focale
- haut niveau d'aberration chromatique latérale à 50 et 400 mm
- distorsion importante à 18 mm et dans la plage de focale 35-100 mm
- un peu trop d'astigmatisme
- autofocus lent qui nécessite d'être réglé.
There’s no doubt – in the segment of amateur mega zoom lenses Tamron are beyond compare. Currently they offer two models which cannot be found in rival companies’ line-up and which are able to satisfy any amateur photographer. If you like wider angles of view you should get interested in the 16-300 mm model, optically a very sensible device. If you care more about longer focal lengths you can get the 18-400 mm model, perhaps not as optically good as the 16-300 mm one or other 18-300 mm rivals but is focal lengths range is the widest and its image quality in the frame centre would be difficult to criticize seriously.
Of course any demanding fan of photography would spot the flaws of the tested lens. If you prefer good image quality across the frame and a better, more efficient autofocus unit it would be more sensible to divide the 18-400 mm range into two lenses. Still keep in mind the fact that you’ll have to spend more money and your devices won’t be so universal.
