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Category: Sigma

Sigma unveils new specifications for Sigma DP2 14 megapixel Foveon camera

3 March, 2009 (16:43) | Compact Camera, Sigma | By: Camera News

Sigma DP2
Sigma DP2

Sigma has released more information about their upcoming camera, the Sigma DP2. The new camera is pretty similar to Sigma DP1 but contains some updates including with a brighter f/2.8 41mm lens, updated image processor, improved ISO sensitivity to 1600 and revised rear panel.

Some key features for the Sigma DP2:
-14 megapixel Foveon sensor
-2.5″ LCD screen
-41mm f/2.8 lens
-ISO sensitivity from 50 to 1600
-weight 260 grams

Press release:
Sigma announces the launch of a 14 megapixel high definition digital camera, packing the full spec of a DSLR into the body of a compact camera: SIGMA DP2

The Sigma Corporation (COO: Kazuto Yamaki) is pleased to announce the new Sigma DP2 compact digital camera featuring a 14 megapixel FOVEON X3 direct image sensor (2,652 × 1,768 × 3 layers) as used in the Sigma SD14 digital SLR.

Sigma introduced the DP1 with a direct image sensor as used in the Sigma SD14 digital SLR to the market in March 2008 as a “unique, groundbreaking, compact digital camera with all the power of a digital SLR”. The multi award winning DP1 has established strong support from a wide range of photographers both amateur and professional.

Building on this success, the DP2 is equipped with a 24.2mm F2.8 lens, equivalent to 41mm on a 35mm SLR camera, for increasing creative possibilities and superior image quality, improving handling and performance.

After the launch of DP2 camera, it enable users to continue to enjoy the image quality of the DP1 camera for wide focal length photography and also take advantage of the DP2’s standard focal length.

DP2 Special Site : www.SIGMA-DP.com/DP2
DP2 Related Web Site : www.sigma-photo.co.jp/english/camera/dp2/index.htm

[Main features]

SLR-sized image sensor
The size of the image sensor used in the DP2 camera is 20.7mm x 13.8mm. It is approximately seven to twelve times larger than the 1/1.8inch to 1/2.5inch image sensors used in ordinary compact digital cameras. The pixel size of the image sensor is 7.8μm. The large photodiodes deployed at a large pixel pitch capture pure, rich light efficiently and give the DP1 its high resolution and richly-graduated tones.

Full-color image sensor
The DP2 uses the same 14 megapixel (2652×1768×3 layers)direct image sensor as the SD14 and DP1. Utilizing the special features of silicon, which is penetrated to different depths by different wavelengths of light, this direct image sensor succeeds in full-color capture with the full RGB in a single-pixel location. Since the moire is not generated, use of a low-pass filter is not needed because full information of light and color can be captured with three-dimensional feeling.

“TRUE II” image processing engine
The DP2 incorporates “TRUE II” which is an improved version of “TRUE” (Three-layer Responsive Ultimate Engine), the world’s first image processing engine suited for the three silicon embedded layer direct image sensor. The unique image-processing algorithm, which has been developed throughout the development of the SD series digital SLR cameras and DP1, is incorporated into “TRUE II”.

24.2mm F2.8 lens designed exclusively for the DP2
The DP2 is equipped with a 24.2mm F2.8 large aperture lens, equivalent to 41mm on a 35mm SLR camera, which has been designed exclusively for DP2. Two high refractive index glasses and two molded glass aspherical lenses provide superior image quality and allow compact construction. The Super Multi Layer Coating reduces flare and ghosting. SLR-sized image sensor and the large aperture of F2.8 combination provide natural shallow depth-of-field and attractive bokeh effect.

RAW format recording
The DP2 includes a RAW recording mode for retaining full image capture detail of the utmost quality plus a JPEG recording format for convenience. The RAW data format uses lossless compression for more compact, yet uncompromised, data files. The RAW data format of the DP2 keeps brightness and color data in a 1:1 ratio without relying on interpolation. Each pixel location captures the full color of RGB data which, when processed in Sigma Photo Pro, will preserve the balance of the natural data for the best photos with the best image quality.

Exclusive Sigma Photo Pro Software (Supplied with the DP2)
The DP2 comes complete with SIGMA Photo Pro software, a RAW image developer that converts all RAW data quickly and easily. Adjustments can be made in three separate modes. The X3F Mode stores the original settings of the image at the point of capture. In the Auto Adjustment Mode, the software analyzes and automatically makes adjustments to the RAW data. The Custom Mode allows the photographer to make individual adjustments. The photographer can make changes easily and quickly by simply adjusting the slider controls within the software.

Compact and lightweight body
The DP2 has compact dimensions of 113.3mm/4.5in (W) x 59.5mm/2.3in (H) x 56.1mm/2.2in (D). Its compact body and lightweight design makes it easy to carry everywhere.

Three metering modes and four exposure modes
The DP2 has three metering modes, Evaluative Metering, Center Weighted Average Metering and Spot Metering. It is also possible to select the exposure mode from Program AE, Shutter Priority AE, Aperture Priority AE or Manual. Exposure compensation can be set in 1/3 stop increments from +3.0 to -3.0 stops and an auto bracketing function is also available.

Pop up (manual) built-in flash
The DP2 is equipped with a pop up (manual) built-in flash. It is possible to use Normal Flash, Red-Eye Reduction Flash and Slow Synchro Mode. It also features flash exposure compensation in 1/3 stops increments.

9 point focusing area
The AF area of DP2 is equipped with 9 focusing points. It is possible to select the desired focusing point depending on the shooting situation.

Manual Focus
Manual Focus is available for use when autofocus or focus lock is not desired. It is also possible to magnify the display to ensure precise focusing.

Movie Mode
It is possible to record movies with QVGA (320×240) size. The number of shooting frames per second is 30 frames. The recording capacity is approximately 30 minutes by 1GB memory card.

Color Mode
The DP2 camera is equipped with 7 types of the Color Modes which is adjusted saturation, contrast, etc for each shooting situation. It is possible to select from Portrait, Landscape, Vivid, Standard, Neutral, B&W or Sepia.

Large 2.5” TFT Color LCD Monitor
The DP2 camera features large 2.5 inch TFT color LCD monitor. The LCD monitor displays 100% of the images, allowing the photographer to easily and accurately confirm the image compensation.

Hot Shoe
The DP2 camera is equipped with a hot shoe, allowing use of the dedicated external flashgun EF-140 DG (optional) as well as Sigma electronic flashguns for SD series such as EF-500 DG and EF-530 DG. This hot shoe is also used to attach high performance view finder VF-21 (optional).
*EF-500 DG and EF-530 DG flashgun series can be used in manual mode only.

Dedicated lens hood (HA-21)
It is possible to attach the dedicated lens hood to block out extraneous light. It also functions as an adapter, designed to accept the 46mm Close-up Lens and 46mm filters.
*A hood adapter HA-21 is sold separately

Sigma 18-200mm f/3.5-6.3 DC OS HSM superzoom lens test / review by dpreview.com

23 January, 2009 (14:35) | Lens, Review, Sigma | By: Camera News

Sigma 18-200mm f/3.5-6.3 DC OS HSM
Sigma 18-200mm f/3.5-6.3

Dpreview.com has reviewed a superzoom lens from Sigma, the Sigma 18-200mm f/3.5-6.3 DC OS HSM. This seems like a nice travel lens with 11x zoom and image stabilization.

Dpreview ends up giving the Sigma 18-200mm f/3.5-6.3 DC OS HSM lens a “Recommended (with reservations)” rating. This is due to the fact that lens has little chromatic aberration and not much vignetting.
The downside is that the Sigma lens isn’t really all that sharp throughout the zoom range.
Read the full review of the Sigma 18-200mm f/3.5-6.3 DC OS HSM lens here.

Buy the Sigma 18-200mm f/3.5-6.3 DC OS HSM lens from BH Photo and get free shipping.

Sigma launches Sigma 18-250mm F3.5-6.3 DC OS HSM – 13.8 superzoom and anti-shake function

15 January, 2009 (11:50) | Lens, Sigma | By: Camera News

Sigma 18-250mm F3.5-6.3 DC OS HSM
Sigma 18-250mm F3.5-6.3 DC OS HSM

Sigma has announced the new Sigma 18-250mm F3.5-6.3 DC OS HSM lens. This superzoom lens gives you 13.8 zoom and features optical design of 18 elements in 14 groups.
The Sigma 18-250mm F3.5-6.3 DC OS HSM also features anti-shake technology for the camera body and the view finder.

The is designed for APS-C / DX sensors and will be available for Sigma, Nikon, Canon, Pentax and Sony mounts in March 2009.

Press release:
January 14, 2009: The Sigma Corporation is pleased to announce the launch of new SIGMA 18-250mm F3.5-6.3 DC OS HSM on March 10th, 2009.

The SIGMA 18-250mm F3.5-6.3 DC OS HSM incorporates Sigma’s original anti-shake compensation function, with a 13.8 times zoom ratio. As opposed to having an anti-shake function in the camera body, this lens’s Hybrid Optical Stabilizer provides not only an anti-shake function for the camera body, but also compensates for image shaking in the view finder as the Optical Stabilizer is built in to the lens.

Incorporating four Special Low Dispersion glass elements and three aspherical lens elements provides excellent image quality throughout the entire zoom range.

This lens has a minimum focusing distance of 45cm (17.7 inches) at all focal lengths and a maximum magnification of 1: 3.4 reproduction ratio, making it ideal for close-up photography. An inner focusing system eliminates front lens rotation, making it suitable for use with circular polarizing filters and the supplied petal-type hood. Incorporating super multi layer coating reduce the ghost in the backlight photography.

Sigma AF 18-125mm f/3.5-5.6 DC HSM OS lens test / review for Canon mount by Photozone

27 December, 2008 (12:47) | Lens, Review, Sigma | By: Camera News

Sigma 18-125mm AF F3.5-5.6 DC lens
Sigma AF 18-125mm f/3.5-5.6 DC HSM OS

Photozone.de has tested a Sigma super zoom lens for Canon mount. The lens they tested is the Sigma AF 18-125mm f/3.5-5.6 DC HSM OS which have a 7x zoom ratio and image stabilization.

Photozone ends up giving the Sigma lens a pretty decent score as it is able to produce good pictures and the lens have a nice price. There is a bit of corner softness and some vignetting, but that is to be expected by a lens with such extreme zoom ratio.
Read the full review of the Sigma AF 18-125mm f/3.5-5.6 DC HSM OS lens here.


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