Sigma SD15

Sigma SD15[1]
Overview
Type Digital single-lens reflex
Lens
Lens Interchangeable (Sigma SA mount)
Sensor/Medium
Sensor 20.7 mm × 13.8 mm Foveon X3 sensor
Maximum resolution 2652 × 1768 × 3 (14.1 million active photoelements)
ASA/ISO range 100–1600 in 1 EV steps, 50 and 3200 in extended mode
Storage SD Card
Focusing
Focus modes One-shot, Continuous, Manual
Focus areas 5 points, cross pattern
Exposure/Metering
Exposure modes Programmed, shutter-priority, aperture priority, manual
Exposure metering TTL, full aperture, zones
Metering modes 77 segment evaluative, Center Area, C/Wgt Average
Flash
Flash pop-up, sync at 1/180 second
Shutter
Shutter electronic focal-plane
Shutter speed range 30 s to 1/4000 s, 2 min to 1/4000 s in extended mode
Continuous shooting up to 3.0 frame/s
Viewfinder
Viewfinder Optical, pentaprism
Image Processing
Custom WB 6 presets, auto, and custom
General
Rear LCD monitor 3-inch (76.2 mm), 460,000 pixels
Battery 1500 mAhr 7.2 V Li-ion rechargeable
Weight 680 g (body only)

The Sigma SD15 is an updated version of Sigma SD14 DSLR produced by the Sigma Corporation of Japan and featuring the improved TRUE II image processing engine, but with the same image sensor as its predecessor. As such, the SD15 features the 4.7 MP Foveon X3 sensor. After having showcased the camera in photokina 2008 and officially introduced during PMA 2010, it finally began shipping on June 2010.[2] It is Sigma's fourth DSLR since the SD9 from 2002.

There is some dispute over the 15.0 MP claim made by Sigma, resulting from the major differences between the industry standard Bayer sensor used in all other digital cameras, and the Foveon X3 full-color image sensor used almost exclusively in Sigma cameras. Since the Foveon sensor captures images via a three-layer red, green, blue silicone array similar to the three-layer technology used in Technicolor film, rather than the single-layer color interpolation method used by Bayer sensors, Sigma and Foveon count each RGB layer separately, so 4.7 MP times 3 translates to their 15.0 MP claims.[3]

Differences with the SD14

While the SD15 retains the image sensor from its predecessor, it includes the improved TRUE II image processing engine that was already implemented in the Sigma DP2. Sigma claims that the new engine offers better quality with a faster processing speed while suppressing noise through a newly developed proprietary algorithm.[4] The combination also offers a one-stop higher ISO range compared to the SD14, though the often desaturated rendition of natural green and oversaturation of blue has been retained.

The SD15 also features a larger, higher resolution LCD screen. The SD15 also introduced Color Modes. The storage medium was changed from a CF card to an SD card.

Software

Sigma Photo Pro

Postprocessing of RAW X3F and JPEG of all digital SIGMA cameras

Version 6.x is free Download for Windows 7+ und Mac OS ab Version 10.7 (6.3.x). Actual Version is 6.4.1 (MacOSX 10.8+, Win 7+). [5]

References

  1. ↑ "Sigma SD15". Imaging Resource. Retrieved 2010-10-16.
  2. ↑ "Sigma re-introduces SD15 digital SLR". DPreview. Retrieved 2010-10-17.
  3. ↑ Foveon X3 sensor
  4. ↑ "Sigma SD15 - TRUE II". Sigma Corporation. Retrieved 2010-10-17.
  5. ↑ http://www.sigma-global.com/en/download/cameras/sigma-photo-pro/
Type Lens 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017
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MILC APS-H Sigma SD Quattro H
APS-C Sigma SD Quattro
Compact
(Prime lens)		 Wide dp0 Quattro
DP1 DP1s DP1x DP1 Merrill dp1 Quattro
Normal DP2 DP2s DP2x DP2 Merrill dp2 Quattro
Tele DP3 Merrill dp3 Quattro
DSLR SD15 SD1 SD1 Merrill
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
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APS-C SD9 SD10 SD14 SD15 SD1 SD1 Merrill
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