Camera Test: Canon Powershot G7

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Camera Test: Canon Pow...
Camera Test: Canon Pow...

Neither Elph nor EOS, what exactly is the Canon Powershot G7?

By Jack Howard Posted December 21, 2006

Certified Test Results:

Noise: Low at ISO 80 (1.9),  Moderately Low at ISO 100 (2.2) and ISO 200 (2.2), Moderate at ISO 400 (2.8), and High/Unacceptable at ISO 800 (4.85) and ISO 1600 (7.3)

Color: Excellent. Average Delta E: 7.92 ISO 80 AWB

Lens Distortion: Visible Barrel at 1x (.50%), Imperceptible Pincushioning at 3x (.05%), and Slight Pincushioning at 6x (.12%)

Resolution: Excellent at ISO 80 (2025) and ISO 400 (1955), Very High at ISO 1600 (1420.)

CIPA Battery Estimate: 220 images

Dimensions: Dimensions (W x H x D): 4.19 x 2.83 x 1.67 in. / 106.4 x 71.9 x 42.5mm

Weight: Approx 13.5 ounces with battery and SD card

Deep Tech Specs From Canon USA

Camera Type:
Compact digital still camera with built-in flash and the lens shift-type image stabilizer (IS) system, 6x Optical / 4x Digital / 24x Combined Zoom

Type
10.0 Megapixel, 1/1.8 inch type Charge Coupled Device (CCD)

Total Pixels
Approx. 10.40 Megapixels

Effective Pixels
Approx. 10.0 Megapixels

Lens Focal Length
7.4-44.4mm f/2.8-4.8 (35mm film equivalent: 35-210mm)

Digital Zoom
4x

Focusing Range
Normal: 1.6 ft./50cm-infinity
Macro: 0.39 in.-1.6 ft./1-50cm (WIDE)

Autofocus System
TTL Autofocus

Viewfinders

Optical Viewfinder
Real-image optical zoom viewfinder

LCD Monitor
2.5 inch low-temperature polycrystalline silicon TFT color LCD
Brightness adjustment: 15 levels

LCD Pixels
Approx. 207,000 pixels

LCD Coverage
100%

Aperture and Shutter

Maximum Aperture
f/2.8 (W) - f/4.8 (T)

Shutter Speed
15-1/2000 sec.; Long Shutter operates with noise reduction when manually set at 1.3-15 sec.

Exposure Control

ISO Sensitivity
Auto, High ISO Auto, ISO 80/100/200/400/800/1600 (Standard Output Sensitivity/Recommended Exposure Index)

Light Metering Method
Evaluative, Center-weighted average, Spot*
* Metering frame is fixed to the center or linked to the AF frame

Exposure Control Method
Program AE; AE Lock is available

Exposure Compensation
+/-2 stops in 1/3-stop increments

White Balance

White Balance Control
Auto, Preset (Daylight, Cloudy, Tungsten, Fluorescent, Fluorescent H), Custom

Flash

Built-in Flash
Auto, Auto w/ Red-Eye Reduction, Auto w/ Slow Synchro, Flash On, Flash On w/ Red-Eye Reduction, Flash On w/ Slow Synchro, Flash Off

Flash Range
Normal: 1.6-13 ft./50cm - 4.0m (W), 1.6-8.2 ft./50cm - 2.5m (T)
Macro: 1-1.6 ft./30-50cm (W/T) (when sensitivity is set to ISO Auto)

Recycling Time
12 sec. or less (battery voltage=6.0V)

Flash Exposure Compensation
+/-2 stops in 1/3-stop increments

Shooting Specifications

Shooting Modes
Auto, P, Av, Tv, M, C1, C2, Special Scene (Portrait, Landscape, Night Scene, Sports, Foliage, Snow, Beach, Fireworks, Aquarium, Underwater, ISO 3200, Indoor, Kids & Pets, Night Snapshot, Color Accent, Color Swap), Stitch Assist, Movie

Photo Effects

My Colors
Vivid, Vivid Blue, Vivid Green, Vivid Red, Neutral, Sepia, Black & White, Positive Film, Lighter Skin Tone, Darker Skin Tone, Custom Color

Self-Timer
Activates shutter after an approx. 2-sec./10-sec. delay, Custom

Wireless Control
Not available

Continuous Shooting
Approx. 2.0 fps

Image Storage

Storage Media
SD Memory Card, SDHC Memory Card, MultiMediaCard

File Format
Design rule for camera file system, DPOF Version 1.1

Image Compression
Normal, Fine, SuperFine

JPEG Compression Mode
Still Image: Exif 2.2 (JPEG)
Movie: AVI (Image: Motion JPEG; Audio: WAVE (Monaural))

Number of Recording Pixels
Still Image: 640 x 480 (Small), 1,600 x 1,200 (Medium 3), 2,272 x 1,704 (Medium 2), 2,816 x 2,112 (Medium 1), 3,648 x 2,736 (Large), 3,648 x 2,048 (Widescreen)
Movie: 1,024 x 768 (15 fps), 640 x 480 / 320 x 240 (30 fps/15 fps) available up to 4GB, 160 x 120 (3 min. at 15 fps)

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