The breakthrough Sigma SD9 camera features the FOVEON® X3 image sensor which is the world's first image-sensor that features three layers of photo detectors. The layers are positioned to take advantage of the fact that silicon absorbs different colors of light at different depths, so one layer records red, another layer records green and the other layer records blue, This means that for every pixel on a FOVEON® X3 image sensor, there's actually a stack of three photo detectors, forming the first and only full-color capture system.
SIGMA SD9 image sensors capture red, green and blue light at each and every pixel. All other image sensors feature just one layer of photo detectors, with just one photo detector per pixel. To capture color, pixels are organized in a grid, or mosaic, resembling a three-color checkerboard. Each pixel captures just one color-red, green or blue. Filters let only one wavelength of light (red, green or blue) pass through to any given pixel, allowing it to record only one color. As a result, mosaic sensors capture only 25% of the red and blue light, and just 50% of the green.
This approach has inherent drawbacks, no matter how many pixels a mosaic-based image sensor might contain. Since they only capture one third of the color, mosaic-based image sensors must rely on complex processing to interpolate the two-thirds they miss. Interpolation leads to color artifacts and a loss of image detail. In fact, some digital cameras intentionally blur pictures to reduce color artifacts.
That's why the SIGMA SD9 powered by FOVEON® X3 technology delivers twice the sharpness, better color detail and greater resistance to unpredictable color artifacts.
SIGMA SD9 is equipped with a "sport finder" for easily seeing the situation outside the picture area, The range that is out of the image sensor coverage area is marked by transparent light gray, to distinguish it from the active picture taking area.
|Image Sensor||FOVEON® X3 (CMOS)
Image sensor size: 13.8 x 20.7mm
Color Photo Detectors: 10.29Million (2268 Columns x 1512 Rows x 3 Layers)
Pixels: Effective:3.43 Million X3 Full Color Pixels (Total:3.54Million X3 Full Color Pixels)
|Lens Mount||Sigma SA mount lenses|
|LCD monitor/LCD Info||1.8" Color TFT LCD with 130,000 dot low-temp poly silicon, coverage area: 100%, backlight: White LED|
|Viewfinder||Pentaprism SLR viewfinder|
|Focal lengh multiplier||3:2 Aspect ratio|
|Focusing Type||TTL phase difference detection system|
|Focus Modes||Single AF, Continuous AF (w/ AF predict function)|
|Sensitivity (ISO equiv film speed)||100, 200, 400|
|White balance||8 type|
|Exposure Modes||P: Program AE with program shift function,
S: Shutter speed priority AE, A: Aperture priority AE
M: Manual exposure
|Exposure Metering||8 segment evaluative metering, Center metering Center weighted average metering
Metering range: Ev-1-20 (with 50mm f1.4 at ISO 100)
|Exposure Compensation||+/-3Ev (in 1/2 steps)|
|Auto Bracketing||Three different exposure levels: Appropriate, Under and Over exposure: Maximum variation of +/-3Ev in 1/2 Ev steps.|
|Shutter type||Vertical traveled metal focal plane shutter, electronically controlled through entire speed range|
|Shutter Speed||1/6000 to 15sec.(ISO 100), 1/6000. to 1 sec. (ISO 200, 400), X=1/180 sec.|
|Diopter Correction||-3 TO +1|
|External Flash Sync||Hot shoe (contact X synchronized at 1/180sec or less with dedicated flash linking contact)|
|Interface||EEE1394 (firewire) & USB|
|Internal Memory/Memory card||CompactFlash Card (Type I & II), Microdrive|
|File Size||HI mode delivers highest resolution image performance with (2263x1512 pixels) x 3.
MED mode (1134x756 pixels) x 3 has high definition and recording capacity.
LOW mode (756x504 pixels) x3 allows consecutive shooting of more images.
|Remote Control||Optinal RS-21|
|Depth of Field Preview||?|
|Power Source||Lithium CR123A x 2 pcs
Lithium CR-V3 x 2 pcs.
or "AA" x 4 pcs
|Dimensions||152mm/5.9" (W) x 120mm/4.7"(H) x 79mm/3.1" (D).2 (H) x 3.0 (D) in.|
|Special features||Equipped with a "sport finder" for easily seeing the situation outside the picture area, The range that is out of the image sensor coverage area is marked by transparent light gray, to distinguish it from the active picture taking area.
integral dust protector, The dust protector of the SIGMA SD9 prevents dust from entering and adhering to the image sensor