Canon PowerShot G7 X Mark III Review

July 24, 2019 | Mark Goldstein |

Canon PowerShot G7 X Mark III Image Quality

All of the sample images in this review were taken using the 20 megapixel SuperFine JPEG setting, which gives an average image size of around 8Mb.

The Canon PowerShot G7 X Mark III produces images of very good quality. It recorded noise-free images at ISO 125-1600, with some noise at ISO 3200. ISO 6400 shows more obvious noise but still remain perfectly usable, although the fastest native setting of ISO 12800 is best avoided.

The Canon PowerShot G7 X Mark III handled chromatic aberrations 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 noticeable vignetting at 24mm.

Macro performance is good, allowing you to focus as close as 5cm away from the subject. The night photograph was excellent, with the maximum shutter speed of 30 and the Bulb mode seconds being long enough for after-dark shots.

Noise

There are 8 ISO settings available on the Canon PowerShot G7 X Mark III. Here are some 100% crops which show the noise levels for each ISO setting for both JPEG and RAW formats.

JPEG

ISO 125 (100% Crop)

iso125.jpg

ISO 200 (100% Crop)

iso200.jpg

ISO 400 (100% Crop)

iso400.jpg

ISO 800 (100% Crop)

iso800.jpg

ISO 1600 (100% Crop)

iso1600.jpg

ISO 3200 (100% Crop)

iso3200.jpg

ISO 6400 (100% Crop)

iso6400.jpg

ISO 12800 (100% Crop)

iso12800.jpg

ISO 25600 (100% Crop)

iso25600.jpg

Focal Range

The Canon PowerShot G7 X Mark III's 4.2x zoom lens offers a versatile focal range, as illustrated by these examples:

24mm

focal_range1.jpg

100mm

focal_range2.jpg

File Quality

The Canon PowerShot G7 X Mark III has 2 different JPEG image quality settings available, with SuperFine being the highest quality option. Here are some 100% crops which show the quality of the various options, with the file size shown in brackets.

SuperFine (5.95Mb) (100% Crop)

Fine (3.02Mb) (100% Crop)

quality_superfine.jpg quality_fine.jpg

Chromatic Aberrations

The Canon PowerShot G7 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 G7 X Mark III has a good macro mode that allows you to focus on a subject that is 5cm away from the camera.

Macro

macro.jpg

Flash

The flash settings on the Canon Powershot G7 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)

ISO 64

Flash On - Wide Angle (24mm)

ISO 64

Flash Off - Telephoto (100mm)

ISO 64

Flash On - Telephoto (100mm)

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 Off

flash_off.jpg

Flash On

flash_on.jpg

Red-eye Reduction

flash_redeye.jpg

Night

The Canon Powershot G7 X Mark III's maximum shutter speed is 30 seconds and there's a Bulb mode too, 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 125.

night1.jpg