The powershot G1X Mark II have a 1.5 inch sensor and Fujifilm X100s have APS-C size sensor, the G1C Mk II gives you more flexibility with its 5x Optical Zoom Lens, no zoom lens available is X100S, for details take a look at the chart below..
Canon PowerShot G1 X Mark II vs. Fujifilm X100S Specification Comparison Table.
Megapixel: With Fujifilm X100S 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 Canon PowerShot G1 X Mark II. The large sensor captures more light hence the result is lower apparent noise, more color depth in image and increased dynamic range. Hence you will get better image quality with Fujifilm X100S when compared to Canon PowerShot G1 X Mark II.
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 Canon PowerShot G1 X Mark II does have built-in low pass filter, hence Fujifilm X100S images will be more sharper / will have more details compared to Canon PowerShot G1 X Mark II.
Optical Zoom: More optical zoom allows you to get closer to your subject without physically moving yourself, hence we recommend you to buy Canon PowerShot G1 X Mark II over Fujifilm X100S.
Aperture Range: Canon PowerShot G1 X Mark II aperture Range is better than Fujifilm X100S, 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: Canon PowerShot G1 X Mark II have more close-up macro range than Fujifilm X100S.
Image stabilization: Canon PowerShot G1 X Mark II features hybrid IS the Normal setting of G1X Mark II corrects for a wide range that includes, Panning setting that works while you are panning your camera, other one is Macro (Hybrid) that work specially while shooting the macro subjects, the final mode is Dynamic mode that work while walking or moving with the camera and it work for both video and still shots. The Hybrid IS don’t stop here the G1X Mark II detects the tripod and stop all IS activity when attached to the tripod. On the other hand the Fujifilm X100S no IS available.
More AF Points: Fujifilm X100S have More AF points Compared to Canon PowerShot G1 X Mark II, More sensor points simply give the camera more information to process, the Fujifilm X100S can quickly and accurately do AF Compared to Canon PowerShot G1 X Mark II.
ISO: The ISO range of Fujifilm X100S is more than Canon PowerShot G1 X Mark II, high sensitivity sensor have more ISO range and hence the you get cleaner low-light images.
Better Shutter Range: Canon PowerShot G1 X Mark II features better shutter range compared to Fujifilm X100S.
Top Continuous shooting speed: Fujifilm X100S features fast shooting speed compared to Canon PowerShot G1 X Mark II.
Better Video Mode: Fujifilm X100S features better video mode compared to Canon PowerShot G1 X Mark II.
Fujifilm X100S Supports Full HD Video capture mode @ 60fps frame rate, Canon PowerShot G1 X Mark II is limited to 30 fps only.
Display: Canon PowerShot G1 X Mark II features bigger and high resolution display compared to Fujifilm X100S.
Canon PowerShot G1 X Mark II features tilting display on the other hand Fujifilm X100S have fixed display, so we get more flexibility while composing our shot with Canon PowerShot G1 X Mark II.
Viewfinder: Fujifilm X100S features Hybrid viewfinder on the other hand Canon PowerShot G1 X Mark II doesn’t have any viewfinder, however if you need one optional optical viewfinder is also available
Battery Life (CIPA): Fujifilm X100S battery rating is 330 shots and other hand Canon PowerShot G1 X Mark II battery rating is 240 shots. According to CIPA.
Dimensions: Canon PowerShot G1 X Mark II is smaller than Fujifilm X100S.
Weight: Fujifilm X100S light-weight than Canon PowerShot G1 X Mark II.
High ISO Test between Canon G1 X Mark II vs. Fujifilm X100S
Verdict: Booth camera have good and bad side, the G1X offers you 1.5 inch sensor (bit smaller than APS-C), you also get 5X zoom lens, better macro mode and Hybrid AF system.
The X100S features APS-C sensor, No optical low pass filter , more ISO range and HYBRID AF system.
If you care about image quality, go with X100S, if you want a perfect travel camera, buy Canon G1X Mark II.
Buy Canon G1X Mark II room Amazon
Buy Fujifilm X100S room Amazon