Canon PowerShot G1 X Mark III Review

November 28, 2017 | Mark Goldstein | |

Image Quality

All of the sample images in this review were taken using the 24 megapixel SuperFine JPEG setting, which gives an average image size of around 10Mb.

The Canon PowerShot G1 X Mark III produces excellent quality still images. It recorded noise-free images at ISO 100-800, with some noise starting to show at ISO 1600. ISO 3200 and 6400 show more obvious noise but still remain perfectly usable, and even the fastest settings of ISO 12800 and 25600 don't suffer too badly.

The G1 X Mark III handled chromatic aberrations very well, with limited purple fringing effects appearing only in high contrast situations and generally at the edges of the frame. The built-in flash worked well indoors, with no red-eye and good overall exposure, although there's some noticeable vignetting at 24mm. The night photograph was excellent, with the maximum shutter speed of 30 seconds and the Bulb mode being long enough for most after-dark shots.

Anti-shake works very well when hand-holding the G1 X Mark III in low-light conditions or when using the telephoto end of the zoom range. Macro performance is adequate, allowing you to focus as close as 10cm away from the subject. The images were a little soft straight out of the Canon PowerShot G1 X Mark III at the default sharpening setting and ideally require some further sharpening in an application like Adobe Photoshop, or you can change the in-camera setting.

The range of Picture Controls make it easy to change the look of your JPEG images, while the Auto Lighting Optimizer and Highlight Tone Priority modes help to etract more detail from the shadow and highlight areas.

Noise

There are 9 ISO settings available on the Canon PowerShot G1 X Mark III. Here are some 100% crops which show the noise levels for each ISO setting for both JPEG and RAW formats.

JPEG RAW

ISO 100 (100% Crop)

ISO 100 (100% Crop)

iso100.jpg iso100raw.jpg
   

ISO 200 (100% Crop)

ISO 200 (100% Crop)

iso200.jpg iso200raw.jpg
   

ISO 400 (100% Crop)

ISO 400 (100% Crop)

iso400.jpg iso400raw.jpg
   

ISO 800 (100% Crop)

ISO 800 (100% Crop)

iso800.jpg iso800raw.jpg
   

ISO 1600 (100% Crop)

ISO 1600 (100% Crop)

iso1600.jpg iso1600raw.jpg
   

ISO 3200 (100% Crop)

ISO 3200 (100% Crop)

iso3200.jpg iso3200raw.jpg
   

ISO 6400 (100% Crop)

ISO 6400 (100% Crop)

iso6400.jpg iso6400raw.jpg
   

ISO 12800 (100% Crop)

ISO 12800 (100% Crop)

iso12800.jpg iso12800raw.jpg
   

ISO 25600 (100% Crop)

ISO 25600 (100% Crop)

iso25600.jpg iso25600raw.jpg

File Quality

The Canon PowerShot G1 X Mark III has 2 different JPEG file quality settings available, including Fine and Normal, with Fine being the higher quality option. Here are two 100% crops which show the quality of the two options.

Fine (6.94Mb) (100% Crop) Normal (4.23Mb) (100% Crop)
quality_fine.jpg quality_normal.jpg
   
RAW (30.7Mb) (100% Crop)  
quality_raw.jpg  

Focal Range

The Canon PowerShot G1 X Mark III's 3x zoom lens offers a fairly versatile focal range, as illustrated by these examples:

24mm

focal_range1.jpg
 

72mm

focal_range2.jpg

Sharpening

Here are two 100% crops which have been Saved as Web - Quality 50 in Photoshop. The right-hand image has had some sharpening applied in Photoshop. The out-of-the camera images are a little soft at the default sharpening setting. You can change the in-camera sharpening level if you don't like the default look.

Original (100% Crop)

Sharpened (100% Crop)

sharpen1.jpg sharpen1a.jpg
   
sharpen2.jpg sharpen2a.jpg

Chromatic Aberrations

The Canon PowerShot G1 X Mark III handled chromatic aberrations well during the review, with fairly limited purple fringing present around the edges of objects in high-contrast situations, as shown in the examples below.

Chromatic Aberrations 1 (100% Crop)

Chromatic Aberrations 2 (100% Crop)

chromatic1.jpg chromatic2.jpg

Macro

The Canon PowerShot G1 X Mark III has a fairly good macro mode that allows you to focus on a subject that is 10cm away from the camera.

Macro

macro.jpg

Flash

The flash settings on the Canon Powershot G1 X Mark III are Auto, On, Auto Red-eye Reduction, Slow Synchro and Off. These shots of a white coloured wall were taken at a distance of 1.5m.

Flash Off - Wide Angle (24mm)

Flash On - Wide Angle (24mm)

ISO 64 ISO 64
   

Flash Off - Telephoto (72mm)

Flash On - Telephoto (72mm)

ISO 64 ISO 64

And here are some portrait shots. As you can see, neither the Flash On or the Red-eye-Reduction settings caused any red-eye.

Flash On

flash_on.jpg
 

Red-eye Reduction

flash_redeye.jpg

Night

The Canon Powershot G1 X Mark III's maximum shutter speed is 30 seconds and there's a Bulb mode for even longer exposures, which is great news if you're seriously interested in night photography. The shot below was taken using a shutter speed of 30 seconds at ISO 100.

Night

night.jpg

Anti Shake

The Canon Powershot G1 X Mark III has an anti-shake mechanism, which allows you to take sharp photos at slower shutter speeds than other digital cameras. To test this, we took 2 handheld shots of the same subject with the same settings. The first shot was taken with anti shake turned off, the second with it turned on.

Shutter Speed / Focal Length Anti-Shake Off (100% Crop) Anti-Shake On (100% Crop)
1/15th sec / 24mm antishake1.jpg antishake1a.jpg
     
1/5th sec / 72mm antishake2.jpg antishake2a.jpg

Picture Controls

Canon's Picture Controls are preset combinations of different sharpness, contrast, saturation and colour tone settings. The available Picture Controls are shown below in the following series, which demonstrates the differences. You can tweak these Picture Controls to your liking, and there are also User Defined styles so that you can create your own look.

Standard

Portrait

picture_style_01.jpg picture_style_02.jpg
   
Landscape

Fine Detail

picture_style_03.jpg picture_style_04.jpg
   
Neutral

Faithful

picture_style_05.jpg picture_style_06.jpg
   

Monochrome

 
picture_style_07.jpg  

Auto Lighting Optimizer

Auto Lighting Optimizer performs in-camera processing to even out the contrast and correct brightness. There are 4 different settings - Off, Low, Standard and Strong.

Off

Low

auto_lighting_optimizer_01.jpg auto_lighting_optimizer_02.jpg
   
Standard

Strong

auto_lighting_optimizer_03.jpg auto_lighting_optimizer_04.jpg

Highlight Tone Priority

Highlight Tone Priority can be enabled from the Camera/5 menu. Use of this function improves highlight detail by expanding the camera's dynamic range in the highlights. As you can see from these examples, Highlight Tone Priority reduced the extent of highlight blow-out considerably.

Off

On
highlight_tone_01.jpg highlight_tone_02.jpg