Sigma Announces the dp1 Quattro Digital Camera
Although Sigma was not keeping it a secret, the company has just formally announced the availability of the Sigma dp1 Quattro Digital Camera. What may be a surprise is that the dp1 has been released after the dp2 but that, too, makes sense if you recognize that the dp2 offers a standard focal length lens, while the new dp1 has a wide-angle lens. One is not meant to replace the other; they co-exist, and eventually they will be joined by the dp3. To paraphrase the old Car Talk radio show, when speaking about French-made cars, no one makes cameras like Sigma and Sigma doesn’t make cameras like anyone else. This I mean as a compliment.
The dp1 utilizes the same 29MP Foveon X3 image sensor and TRUE III processing engine as the dp2; however, it incorporates a 19mm f/2.8 lens, providing a 28mm focal-length equivalency in the 35mm format. The lens on the dp2 is a 30mm with a standard 45mm focal-length equivalency. The wide-angle dp1 offers a perspective more apt for inclusive interior shooting as well as landscape photography and any imaging that calls for heightened distortion for creative purposes. The lens features a 7.9" minimum focus distance and the f/2.8 maximum aperture is effective in low light, enabling moderate depth-of-field control. Its optical design contains nine elements in eight groups with “F” low-dispersion glass and two glass-mold aspherical lenses for reduced aberrations and clear, color-accurate imaging. A nine-blade diaphragm will produce pleasing out-of-focus background highlights.
The unique APS-C-sized Foveon X3 CMOS sensor captures full-color information vertically as opposed to horizontally. This means that each pixel has accurate and complete color information, resulting in rich tones and smooth gradations. Also, since it captures color vertically, there is no need for color filters or a low-pass filter, further increasing image quality for an equivalent resolution of about 39MP. For low-light shooting, the camera has an ISO sensitivity range of 100-6400 in 1/3 steps and it has P/S/A/M shooting modes for full control over your exposure. There is even 14-bit RAW image capture at a maximum resolution of 5424 x 3616, for excellent editing capabilities.
For focusing, the camera offers contrast-detect autofocus or a manual focusing ring for your preference. The autofocus system provides nine-point Select mode, Free move mode to adjust the size of the focus frame, and face Detection AF. Shutter Priority AF offers faster focus adjustment and, by stopping the live view and AF+MF mode, enables manual focus override for exacting precision. Up to seven RAW images at 3.5 fps per second can be captured, and the camera saves your images to an SDXC, SDHC, or SD card.
Optimized to process the data provided by the Foveon X3 Quattro direct image sensor is the TRUE (Three-layer Responsive Ultimate Engine) III image processor. This engine incorporates Sigma's proprietary algorithm, used to decipher the immense amount of image data created by the three-layered sensor, and produce a richly detailed image devoid of color aliasing or other image deterioration. The sensor-and-processor combination also produces images with noticeably reduced noise.
Several Color Mode options, such as Sunset Red and Cinema, enable creative expression, and ten customizable White Balance options are supported. With Filter Effects, advanced monochrome adjustments can be made for gorgeous black-and-white imaging.
The dp1 features a 3.0" TFT LCD screen with 920,000 pixels for shooting and reviewing your images. Its particular form factor, with its large, angular hand grip, is very comfortable and enables easy control over its minimal buttons and dials. A hot-shoe mount supports external flash units as well as an optional optical view finder.
Having used the dp2 and appreciated its uncommon form factor and DSLR-like image quality and color tones, I look forward to the dp1 and its wide-angle capture potential.
|Sigma dp Quattro Camera|
|Image Sensor||Foveon X3 Direct Image Sensor (CMOS type)|
|Image Sensor Size||23.5 x 15.7mm (APS-C)|
|Color Photo Detectors||Effective Pixels: Approx. 29MP
T (Top): 5424 x 3616 / M (Middle): 2712 x 1808 / B (Bottom): 2712 x 1808
Total Pixels: Approx. 33MP
|Storage Media||SD, SDHC, SDXC memory card|
|File Format||Lossless compression RAW (14-bit), JPEG (Exif 2.3), RAW+JPEG|
|JPEG Image Quality||FINE, NORMAL, BASIC|
|Aspect Ratio||21:9, 16:9, 3:2, 4:3, 1:1|
|Number of Recording Pixels||RAW
High: T: 5424 x 3616; M: 2712 x 1808; B: 2712 x 1808
Low: T: 2704 x 1808; M: 2704 x 1808; B: 2704 x 1808
Super-High: 7680 x 3296
High: 5424 x 2328
Low: 2704 x 1160
Super-High: 7680 x 4320
High: 5424 x 3048
Low: 2704 x 1520
Super-High: 7680 x 5120
High: 5424 x 3616
Low: 2704 x 1808
Super-High: 6816 x 5120
High: 4816 x 3616
Low: 2400 x 1808
Super-High: 5120 x 5120
High: 3616 x 3616
Low: 1808 x 1808
|ISO Sensitivity||Auto (high and low limits); ISO 100-6400 (in 1/3 EV steps)|
|White Balance Modes||Auto, Auto (Lighting Source Priority), Daylight, Shade, Overcast, Incandescent, Fluorescent, Color Temperature, Flash, Custom|
|Color Modes||Standard, Vivid, Neutral, Portrait, Landscape, Cinema, Sunset Red, Forest Green, FOV Classic Blue, FOV Classic Yellow, Monochrome|
|Autofocus Type||Contrast-detection type|
|AF Points||9 points (selectable), Free move mode, Face detection AF|
|Metering Systems||Evaluative Metering, Center-Weighted Average Metering, Spot Metering|
|Exposure Control Systems||Program AE (Program Shift possible), Shutter-Speed Priority AE, Aperture-Priority AE, Manual|
|Exposure Compensation||+/- 3 EV in 1/3 steps|
|Shutter Speed Range||30 to 1/2000 sec.|
|Drive Modes||Single, Continuous, Self-Timer (10 or 2 sec.), Interval Timer|
|LCD Monitor||3.0" 920k-dot TFT-LCD|
|Interface||USB, Cable Release Switch|
|Power||BP-51 rechargeable lithium-ion battery pack|
|dp1 Quattro||dp2 Quattro||dp3 Quattro|
|Focal Length (35mm Equivalent)||19mm (28mm)||30mm (45mm)||50mm (75mm)|
|Aperture Range||f/2.8 to f/16||f/2.8 to f/16||f/2.8 to f/16|
|Number of Diaphragm Blades||9||9||7|
|Lens Construction||9 elements in 8 groups||8 elements in 6 groups||10 elements in 8 groups|
|Focus Range||7.9" / 20cm to infinity; LIMIT mode||11" / 28cm to infinity; LIMIT mode||8.9" / 22.6cm to infinity; LIMIT mode|
|Dimensions||6.4 x 2.6 x 3.4" / 161.4 x 67 x 87.1mm||6.4 x 2.6 x 3.2" / 161.4 x 67 x 81.6mm||6.4 x 2.6 x 4" / 161.4 x 67 x 101.8mm|
|Weight||15 oz / 425 g (without battery or memory card)||13.9oz / 395g (without battery or card)||Not specified by manufacturer|