New 18-200 OS II from Sigma

Started Oct 6, 2011 | Discussions thread
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RobertSigmund Forum Pro • Posts: 10,750
Re: New 18-200 OS II from Sigma

"A favor :

  • Nitidez excelente en los dos tercios centrales de la imagen.

  • Construcción, acabados y ajustes excelentes.

  • Ergonomía y agrado de uso excelente.

  • Distorsión geométrica notable, teniendo en cuenta el tipo de producto.

  • Niveles de viñeteo en todo el rango focal excelentes.

En contra:

  • Aberraciones cromáticas laterales y contraste mejorables de 18 a 25 mm. y en los 200 mm.

  • Distorsión geométrica desde 24 a 50 mm. mejorable, (típico en todos los zooms TT)"

Excellent sharpness in the center two thirds of the picture
Excellent construction and build
Ergonomics and usability excellent
Remarkable [low] distortion for this kind of lens
Excellent [low] vignetting over the whole zoom range


Lateral chormatic aberrations and contrast should better in the range from 18-25 mm and at 200 mm.

Distortion in the range of 24-50 mm could be better, though typical for this kind of universal zooms."

Seems to be a good offer, depending on the price of course.

CyrusK wrote:

And full review here:

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