QUOTE(Lambretta_ @ Jul 26 2008, 04:30 PM)

Naaa... scherzavo il 18/200 Nikon dando indietro il suo sempre se... se lo prendono e qui sono serio...

Infatti mi hanno detto che non lo ritirano perchè non ha mercato essendo venduto in Kit
QUOTE(the_nis @ Jul 26 2008, 04:50 PM)

il 18-200 sigma

non lo conosco e non ho visto foto, opterei per una lente del genere solo se mi sentissi pesantemente infastidito dal dover cambiare obiettivo e in quel caso penso che vorrei spendere qualche spicciolo in piu' e comprare in nikkor (la differenza di prezzo non sarebbe esagerata, poi potresti rivendere il tuo.
La differenza tra i 18-200 Nikkor e Sigma non è da poco circa 300€ e come dicevo il mio non lo ritirano.
QUOTE(the_nis @ Jul 26 2008, 04:50 PM)

il 18-200 sigma

non lo conosco e non ho visto foto, opterei per una lente del genere solo se mi sentissi pesantemente infastidito dal dover cambiare obiettivo e in quel caso penso che vorrei spendere qualche spicciolo in piu' e comprare in nikkor (la differenza di prezzo non sarebbe esagerata, poi potresti rivendere il tuo.
Ecco una recensione del Sigma 18-200
11.1 times high magnification zoom ratio lens is exclusively designed for digital SLR cameras, and equipped with OS (Optical Stabilizer) function
Equipped with Sigma's own unique technology OS (Optical Stabilizer) function
SLD glass and three aspherical lenses provide high image quality throughout the entire zoom range
Minimum focusing distance of 45cm/17.7 inches and maximum magnification of 1:3.9, makes it ideal for close-up photography
Super multi-layer coating reduces flare and ghosting
The incorporation of HSM enables autofocusing with all Nikon DSLR cameras
The Sigma Corporation is please to announce the launch of the new 18-200mm F3.5-6.3 DC OS HSM lens for Nikon
This 11.1 times high magnification zoom ratio lens is exclusively designed for digital SLR cameras and is capable of covering a wide range of focal lengths from wide angle to telephoto. It is equipped with Sigma's own unique technology OS (Optical Stabilizer) function. This function uses two sensors inside the lens to detect vertical and horizontal movement of the camera and works by moving an optical image stabilizing lens group, to effectively compensate for camera shake. It also automatically detects movement of the camera and compensates for camera shake when shooting moving subjects such as motor sports. SLD(Special Low Dispersion)glass and three aspherical lenses provide excellent correction for all types of aberrations. The super multi-layer lens coating reduces flare and ghosting. High image quality is assured throughout the entire zoom range. This lens has a minimum focusing distance of 45cm (17.7") at all focal lengths, and has maximum magnification of 1:3.9, making it ideal for close-up photography. The incorporation of HSM (Hyper Sonic Motor) allows quiet and high-speed autofocusing with all Nikon DSLR cameras. An inner focusing system eliminates front lens rotation, making the lens particularly suitable for using circular polarizing filters and the petal-type lens hood supplied.

SPECIFICATIONS
Focal Length
18-200mm
Minimum ApertureF22Lens Construction18 Elements in 13 GroupsAngle of View76.5 - 8.1 degreesNumber of Diaphragm Blades 7 BladesMinimum Focusing Distance 45cm / 17.7 in.Maximum Magnification 1:3.9Filter Size Diameter 72mmLens HoodPetal Hood
(LH780-04)
SuppliedDimensions Diameter 79mm perchè Length 97.5mm
3.1 in. perchè 3.8 in.Weight 600g / 21.2 oz.Corresponding AF Mounts NIKON (available)
**The appearance, specifications, and the like of the product are subject to change for improvement without notice.
**Vignetting will occur if the lens is used with digital cameras with image sensors larger than APS-C size or 35mm SLR cameras.
**The angle of view depends upon the digital camera being used.
Fonte Sigma America