Sigma 18-250mm f/3.5-6.3 DC Macro OS HSM Lens Hands-On

Sigma 18-250mm f/3.5-6.3 DC Macro OS HSM

The new Sigma 18-250mm f/3.5-6.3 DC Macro OS HSM lens is the first lens to use Thermally Stable Composite (TSC), meaning that tighter construction using thinner and lighter materials can be achieved. Read more in the Sigma 18-250mm f/3.5-6.3 news story.

Sigma 18-250mm f/3.5-6.3 DC Macro OS HSM Performance

MTF@18mm

MTF@80mm

MTF@250mm

How to read our charts: The blue column represents readings from the centre of the picture frame at the various apertures and the green is from the edges. Averaging them out gives the red weighted column. The scale on the left side is an indication of actual image resolution. The taller the column, the better the lens performance. Simple. For this review, the lens was tested on a Canon EOS 7D using Imatest.

Chromatic Aberration Charts:

CA@18mm

CA@80mm

CA@250mm

How to read our charts: Chromatic aberration is the lens' inability to focus on the sensor or film all colours of visible light at the same point. Severe chromatic aberration gives a noticeable fringing or a halo effect around sharp edges within the picture. It can be cured in software. Apochromatic lenses have special lens elements (aspheric, extra-low dispersion etc) to minimize the problem, hence they usually cost more. For this review, the lens was tested on a Canon EOS 7D using Imatest.

The Sigma 18-250mm f/3.5-6.3 DC Macro OS HSM lens is available for pre-order from Harrison Cameras.

Sigma 18-250mm f/3.5-6.3 DC Macro OS HSM Photos of Equipment

Sigma 18-250mm f/3.5-6.3 DC Macro OS HSM Specifications

Manufacturer	Sigma
General
	Lens Mounts
Lens
	Focal Length	18mm - 250mm
	Angle of View	6.5° - 76.5°
	Max Aperture	f/3.5 - f/6.3
	Min Aperture	f/22
	Filter Size	62mm
	35mm equivalent	No Data
	Internal focusing	No Data
Focusing
	Min Focus	35cm
	Stabilised	No Data
Construction
	Blades	7
	Elements	16
	Groups	13
Box Contents
	Box Contents	No Data
Dimensions
	Weight	470g
	Height	88.6mm

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