Canon PowerShot G2 Review
JPEG/RAW Image Size & Quality
The G2 provides four image size options in combination with three JPEG quality settings. On top of this you have the uncompressed, unprocessed RAW file which is simply a pixel by pixel readout of the CCD (10-bits per pixel).
Standard Test Scene
To give an impression of what some of the combinations of image size and quality produce the table below is a cross reference of some of them:
- 2272 x 1704 RAW
- 2272 x 1704 Super-Fine
- 2272 x 1704 Fine
- 2272 x 1704 Normal
- 1600 x 1200 Super-Fine
- 1600 x 1200 Fine
- 1024 x 768 Super-Fine
- 640 x 480 Super-Fine
Images below are cropped 240 x 100 area of the image magnified
200% (nearest neighbour).
|2272 x 1704|
3,200 KB (Canon RAW - .CRW)
|1600 x 1200|
|1024 x 768|
|640 x 480|
Clearly Super-Fine JPEG provides a high quality image with virtually no visible artifacts. Moving down to Fine and we can just about make out the beginnings of some JPEG artifacts but they're pretty few and far between, this setting would probably be the best trade off between quality and storage space.
ISO (Sensitivity) Adjustment
ISO equivalence on a digital camera is the ability to increase the sensitivity of the CCD to allow for faster shutter speeds and/or better performance in low light. The way this works in a digital camera is by "turning up the volume" on the CCD's signal amplifiers, nothing is without its price however and doing so also amplifies any noise that may be present and often affects colour saturation.
The G2 features four selectable ISO sensitivities of 50, 100, 200 and 400 as well as the same Auto mode we saw on the G1 (which varies sensitivity between ISO 50 and 100 depending on available light).
|Good light (10 EV)||Low light (3 EV)|
|ISO 50||ISO 50|
|ISO 100||ISO 100|
|ISO 200||ISO 200|
|ISO 400||ISO 400|
As we'd expect the G2's ISO 50 appears very clean, there's just the hint of some noise but nothing visible. ISO 100 does increase the noise levels slightly, they appear as coloured mottle and dark/light texture highlights. ISO 200 is usable, ISO 400 seems to me to be a little too noisy to be useful at full resolution (though obviously if you were to sample this image down in size some of the noise would average out).
|Montréal Dépaneur Out of Business DP by MarioSS|
from Your City - Out of Business
|Wish You Were Here by Dutch Newchurch|
from Street musician playing
|Flight of a Puffin by cjf2|
Popular mobile editing app Snapseed just got a major update that includes a new interface and 11 new presets for both Android and iOS, as well as adding the Perspective tool to the iOS version.
It might sound like a strange idea, but taking macro photos of boiling water can actually result in some really cool photographs. A good photo experiment for a rainy day.
The database was created to "break with the narrow lens through which history… has been recorded" by equipping those who commission photography with "the resources to discover photographers of color available for assignments.
Lensbaby has released two new optics for their special "optic swap system." The Lensbaby Sweet 80 Optic gives you that trademark sweet spot of focus, while the Creative Bokeh optic gives you 9 different drop in aperture plate options to play with.
TechCrunch has already posted their review of the upcoming iPhone 8 (not yet the iPhone X), and they're calling it "a look into the augmented future of photography."
Affinity Photo is a $50 photo editing software with no subscriptions. That's it – pay for it once and you're done. And we think it's actually pretty darn good.
Instagram is currently testing a major change to the app's profile layout: replacing the 3-photo across grid with a 4-photo grid... and some users are NOT taking the news well.
A report by USSRPhoto is shedding some light on the return of the famed Zenit camera brand. It seems the full-frame mirrorless camera they're working on will be made in part by Leica using components from the Leica SL.
According to a reliable Korean report, Samsung is developing a smartphone sensor that's capable of super slow motion. Translation: Samsung's next batch of Galaxy smartphones may be able to shoot 1,000fps.
This simple photograph of a seahorse and Q-tip has taken the internet by storm. We spoke to photographer Justin Hofman about how it was captured, and what it means to him.
After a massive leak last week, Profoto has officially debuted the Profoto A1: the company's first on-camera flash system that they're calling "the world's smallest studio flash."
"When the first hyperfocal distance charts were designed, someone decided that an acceptably sharp background contained some blur — enough to notice in a medium-sized print [...] After that point, nearly every other hyperfocal chart followed suit."
The Canon EOS Rebel SL2 (also known as the EOS 200D) is the company's impressively compact entry-level DSLR. Packing a 24MP APS-C sensor, DIGIC 7 processor and Dual Pixel AF, it promises a lot of bang for the buck. And while not mind-blowing, it handles most tasks very well.
Correct these four common composition mistakes and your photos will be more balanced, tell a better story, and lead your viewer's eye where you want it to go.
The rugged, compact 360° action camera Kodak unveiled at Photokina in 2016, the Kodak PixPro Orbit 360, is finally available in the United States.
iOS 11 launches tomorrow, and it'll save all of your pictures in a new high efficiency image format called HEIC. Fortunately, there's now a converter that will let you turn those photos back into JPEGs.
Photo protection company ImageRights recently released a new service that lets non-subscribers take advantage of their streamlined copyright registration system that checks for errors and fills out all the required forms for you.
What's the difference between a $200 circular polarizing filter and a $100 circular polarizing filter? Roger Cicala at Lens Rentals put six different filters through a few tests to find out.
A flurry of leaks reveal that GoPro's upcoming Hero6 will shoot 4K at 60fps, 1080p at 240fps, will cost $500, and is scheduled for announcement/release on September 28th.
Before he became the iconic director whose name we've all heard, a teenage Stanley Kubrick struck up a business relationship with New York’s Look magazine. No surprise: he was an incredibly talented photographer.
WD's new G-Technology G-Drive mobile SSD R-Series is a portable solid state option for photographers who want the reliability of an SSD in a rugged water and dust-resistant package.
Fast, stabilized and affordable is an appealing combination when it comes to lenses. With its latest 24-70mm F2.8, Tamron aims to upgrade autofocus speed and stabilization. We've got a full gallery from this updated full-frame zoom.
Photographer Clay Cook tells the story of his most ambitious photographic dream and career goal coming true: photographing A-list actress Jennifer Lawrence.
In an interview with a Chinese website, Nikon Japan's Director of Development dropped a bombshell, saying that a Nikon mirrorless camera "must be full-frame."
Here's a side-by-side spec comparison of two flagship devices with particular attention to the things that really matter – at least to people who prioritize photography features.
A month and a half after revealing the finalists of the 2017 EyeEm Awards, the photo sharing community and licensing marketplace has finally revealed the winners.
Photographer Josselin Cornou tells the breathtaking story behind two beautiful photos captured while snorkeling with humpback whales in Tonga.
The Sony RX10 IV is a fixed lens camera with a 1"-type sensor and 24-600mm equivalent lens that can shoot 4K video or stills at 24 fps, but that's not what we think is interesting about it. The addition of phase detection autofocus is pivotal to all those features.
The announcement date is set! Google will reveal their next generation Pixel phones—their response to Apple's shiny new iPhone X—on October 4th. Let the smartphone camera wars begin.
Sony just debuted three palm-style 4K camcorders that steal a bit of speedy phase detect autofocus technology from the company's RX10 IV. In fact, they kind of improve on it.