The Sigma DP2 Quattro features 29MP Foveon X3 Quattro CMOS Image Sensor and TRUE III Image Processing Engine on the other hand Fujifilm X100S features 16 Mp APS-C X-Trans CMOS II Sensor and EXR Processor II Image Processor, take a look at the Major Specification Below.
Sigma DP2 Quattro vs. Fujifilm X100S Specification Comparison Table.
Megapixel: With Sigma DP2 Quattro you get more megapixels, don’t fall in Megapixel Marketing Myth because more megapixel DONOT increase image quality, but more megapixels will help you to get large printouts and also help you to re-compose your images after shooting a scene /subject.
Bigger Sensor Size: Fujifilm X100S have bit bigger sensor than Sigma DP2 Quattro.
Low pass filter: Fujifilm X100S have no built-in low pass filter, so you get super Sharpe images even when viewed at 100% without moiré or aliasing problem, on the other Sigma DP2 Quattro does have built-in low pass filter, hence Fujifilm X100S better compared to Sigma DP2 Quattro.
Aperture Range: Fujifilm X100S aperture Range is better than Sigma DP2 Quattro, the bright aperture lenses capture more incoming light to the sensor, create more DOF, better color and contrast reproduction and it also create less noise during low-light situation.
Macro: Fujifilm X100S have more close-up macro range than Sigma DP2 Quattro.
Better AF System: Fujifilm X100S features Phase + contrast (hybrid) AF System, on the other hand Sigma DP2 Quattro features Contrast AF system.
More AF Points: Fujifilm X100S have More AF points Compared to Sigma DP2 Quattro, More sensor points simply give the camera more information to process, the Fujifilm X100S can quickly and accurately do AF Compared to Sigma DP2 Quattro.
ISO: The ISO range of Fujifilm X100S is more than Sigma DP2 Quattro, high sensitivity sensor have more ISO range and hence the you get cleaner low-light images.
Better Shutter Range: Fujifilm X100S features better shutter range compared to Sigma DP2 Quattro.
Better Video Mode: Fujifilm X100S Supports Full HD Video capture mode @ 60fps frame rate, but no video recoding options available in Sigma DP2 Quattro.
Display: Sigma DP2 Quattro features bigger and high resolution display compared to Fujifilm X100S.
Sigma DP2 Quattro features 3” display on the other hand Fujifilm X100S have 2.8” display, so we get more flexibility while composing our shot with Sigma DP2 Quattro.
Viewfinder: Fujifilm X100S features Hybrid viewfinder on the other hand Fujifilm X100S doesn’t have any viewfinder, however if you need one optional optical viewfinder is also available
Dimensions: Fujifilm X100S is smaller than Sigma DP2 Quattro.
Weight: Sigma DP2 Quattro lighter than Fujifilm X100S.
High ISO Test Between Sigma DP2 Quattro vs. Fujifilm X100S
Verdict: We recommend you to Buy Fujifilm X100S, since X100S features better sensor, phase + contrast based AF system, bright lens and more ISO range for noise free High ISO images and Full HD video recording option with X100S, We highly recommend you to buy X100S
Buy Sigma DP2 Quattro from Amazon
Buy Fujifilm X100S from Amazon