Canon PowerShot G7 Review
The G7 features a grand total of seven white balance settings including the default automatic mode. There's also a manual (custom) white balance option, which is created by aiming the camera at a white (or gray) subject and pressing the SET button. Automatic white balance appeared to work well outdoors and not terribly in fluorescent lighting, but as per previous Canon digital cameras less well in incandescent light, where it produced a pronounced orange color cast. It is advisable to switch to the tungsten preset (or set a custom WB) when shooting indoors if you don't like a warm cast to your indoor shots.
|Incandescent - Auto WB
Red 11.6%, Blue -17.0%
|Incandescent - Incandescent preset WB
Red -1.7%, Blue -1.9%
|Fluorescent - Auto WB
Red 3.8%, Blue -17.9%
|Fluorescent - Fluorescent preset WB
Red 1.4%, Blue -5.1%
The built-in flash unit has a specified range of 4.0 m at wide angle and 2.5 m at telephoto (when the ISO is set to auto) - which is fine for social snaps and the occasional bit of fill-in, but is hampered by the relatively small maximum aperture as you move up the zoom range. In use we found the flash to work very well indeed, with most indoor flash shots perfectly exposed. The FUNC menu offers a Flash Exposure Compensation setting (-2.0 to +2.0), and the AF illuminator helps focus in low light. We found the red-eye reduction to work well at shorter distances but to be less effective if you move further away and zoom in. One thing worth noting is that the shutter lag when using flash (because of the pre-flash metering) increases to around half a second. On a more positive note you can use the flash in continuous (burst) mode.
Of course the inclusion of a dedicated hot shoe means you can expand the G7's flash capabilities as and when you need to.
|Skin tone - Slight warm tone, excellent exposure||Color chart -Slight warm tone, excellent exposure|
Macro performance has been boosted over the G6, with the minimum focus distance at the wide (35mm equiv.) end of the zoom reduced to a very impressive 1cm, allowing you to capture an area around an inch across. Of course it's not always practical or desirable to get that close, which is why macro performance at the long end of the zoom is also important. At the 210mm equiv. end of the zoom the G7 can focus down to 50cm, capturing an area just over 10cm across. There is some corner softness at the long end, but distortion is very low.
Barrel and Pincushion Distortion
The G7 exhibits pretty low distortion given the large focal length range - 1.2% barrel distortion at the wide end, and only the barest measurable distortion (0.2%) at the full 210mm telephoto end. There is also virtually no vignetting at either end of the zoom. There is a hint of corner softness and chromatic aberration when shooting at either end of the zoom with the aperture wide open.
|Barrel distortion - 1.2% at Wide angle
Equiv. focal length: 35 mm
|Pincushion distortion - 0.2% at Telephoto
Equiv. focal length: 210 mm
Specific image quality issues
Overall I was very impressed with the G7's output - and given its position at the top of the PowerShot range I would have been surprised if it hadn't been up there with the best. Of course you'll get the best results at ISO 80 and 100 - once you hit ISO 200 the effects of noise and noise reduction start to take their toll on fine detail, and at ISO 800 and above quality is seriously compromised. Nothing unusual there.
Although the output is a little soft (you get the feeling this sensor needs a lot of 'work' doing on it to produce clean results), edge-to-edge performance is good across the zoom range once you close down the aperture a stop or two, focus very reliable and color superb; just punchy enough to produce attractive results 'out of the box' without looking unnatural or over-processed. Of course the extensive in-camera parameters for color, contrast, saturation and sharpening allow you to fine-tune the output to your own tastes and needs - especially important given the lack of raw file support.
On the downside the metering is easily fooled by very bright and/or contrasty scenes, and I found myself with a -0.3 or -0.6 EV compensation almost permanently dialed in to avoid the consistent overexposure and highlight clipping that shooting at the wide end of the zoom outdoors tended to produce. This isn't helped by the fairly steep default tone cure and limited dynamic range - this is one of those cameras that - at its default settings - is very sensitive to exposure errors, and one that benefits greatly from a little manual intervention. Turning down the contrast helps a little, as does using the histogram to expose slightly 'to the left'.
Ironically I found the G7 to be one of the worst cameras I've ever used for camera shake; down I suspect to the long zoom and image stabilization encouraging me to take shots at way too low shutter speeds, compounded by the physical design of the camera, which isn't that easy to hold steady.
Purple fringing & Chromatic Aberrations
Although nowhere near as bad as we've seen on some Canon compacts, the G7 does suffer from some purple fringing, particularly at the wide end of the zoom and in contre-jour situations such as this. There is also some chromatic aberration visible at the wide end of the zoom and wide apertures (this shows as red/blue fringing on either side of high contrast edges).
|100% crop||35mm equiv., F2.8|
Exposure / Dynamic range / clipping
By far my biggest problem with the G7 - and the cause of the majority of failed shots - is the clipping of highlights when shooting in less than perfect conditions (particularly on bright, hazy days). The clipping is caused by a combination of limited dynamic range, the camera's default tone curve and a tendency to overexposure in such circumstances. With practice it's possible to reduce the likelihood of highlight clipping by careful exposure and use of a lower contrast setting when shooting at the wide end of the zoom on bright days, but this does hinder the G7's ability to be used as a 'walkaround' camera for quick snaps.
|100% crop||35mm equiv., F4.0|
|100% crop||46mm equiv., F4.0|
|100% crop||35mm equiv., F2.8, -1.7EV exposure comp.|
|100% crop||35mm equiv., F4.0|
Ricoh has introduced a new rugged compact camera with a 16MP CMOS sensor, 28-140mm lens, 2.7" LCD and built-in LED macro lights. Read more
This compact drone can shoot HD video using a 2-axis stabilized 12MP camera. Read more
The new Prynt Pocket can print a photo directly from their iPhone simply by inserting the phone into the printer, then snapping a photo. Each print will cost about 50 cents. Read more
Updates for Adobe Camera Raw and Lightroom CC bring support for the Sony A9 and Panasonic ZS70/TZ90, along with bug fixes.
The Triggertrap remote camera control system is no longer sold due to the company folding, but now users will be able to build their own. Read more
The Magic Format Converter comes with internal optics that expand the image circle of full-frame DSLR lenses for use on the Fuji medium format camera. Read more
The usually Apple-exclusive MacPhun software developer has announced that it will introduce PC versions of two of its most popular applications. Both Aurora HDR and Luminar should be available for the Windows operating system by the autumn of this year. Read more
Sony's newest G Master telephoto zoom, announced alongside the a9, is the first of the company's FE lenses to reach 400mm natively. We had one in California and photographed horses, portraits, and landscapes - check out how it did. Read more
Garmin has entered the 360-camera market with the VIRB, which captures 5.7K video at 30p as well as 15MP stills. Read more
German media reports that the founders of the company behind the Panono 360-degree ball camera have filed for bankruptcy at a court in Berlin. Read more
With a claimed 800 new custom parts, Microsoft's updated Surface Pro comes with the latest Kaby Lake processors, better battery life, a new hinge, plus the Surface Pen is updated as well. Read more
DW Photo is attempting to resurrect the Hy6 medium format camera, though the legal tangles of its development may stop it being branded Rolleiflex.
The Kodak EKTRA, the company's 'camera first' smartphone, is now available to purchase in the United States. Read more
Apple and Nokia have settled their years-old patent dispute. Apple will make an undisclosed payment to Nokia and sign a licensing agreement related to digital health products with the Finnish company.
David Gibson, one of Britain's best known street shooters, shares all.
Photographers from the SKYGLOW project travelled 150k miles and took 3 million photos in increasingly rare locations: those without light pollution.
The world's fastest 200mm was produced for 16 years. In that time, only 8000 were made.
Photokina, the biennial photo industry trade show in Cologne, Germany, has announced that it will become an annual event beginning in 2018, and expand its focus to additional areas of imaging technology. Read more
No mic socket? No problem. In this video, Daniel Peters at Photo Gear News shows you how to make a lapel microphone using just a smartphone and a pair of earbuds.
How does the iPhone 7 Plus stack up against the Arri Alexa cinema camera? Watch this short video to find out.
Canon Australia's video series "The Lab" is designed to make photographers experiment and think outside the box. In the latest video a group of photographers create images based on their sense of taste.
The GH5 is expected to get a firmware update this summer to support 400Mbps internal recording. NewsShooter explores what memory cards you'll need to make it work.
Microsoft's new Surface Pro offers Intel's latest processor generation and improved battery life.
Riding a mountain bike downhill is dangerous enough in daylight, but potentially lethal at night. Which is where drones come in.
Rumors abound that Canon (and maybe Nikon) may produce a mirrorless camera based using their existing DSLR mount. Does this guarantee immediate great lens choice or a perpetually second-rate experience? Read more
According to rumors, the next camera from Nest will be able to capture 4K video, though that resolution will be only used for 'virtual' pan and tilt functions.
Boundary's Prima 'fully modular' backpack is expandable to 30L and has a removable camera case and tablet sleeve. Early Kickstarter backers can get one for $189.
Stanley Greene captured 'brutally honest' photographs in the war zones of the Middle East, Chechnya and Georgia. He was also one of the few African-American photographers working internationally.
Owners of Leica M cameras that suffer from peeling CCDs will be able to claim a free repair in the future so long as the camera was purchased within five years of the fault becoming apparent, the company has announced. Read more
The Carl Zeiss Jena BIOTAR 75mm F1.5 Red T lens is very rare and priced accordingly. It can be yours today for the low, low price of $15,000.