Canon PowerShot G1 X Mark II Review
The actual sensitivity of each indicated ISO is measured using the same shots as are used to measure ISO noise levels, we simply compare the exposure for each shot to the metered light level (using a calibrated Sekonic L-358), middle gray matched. We estimate the accuracy of these results to be +/- 1/6 EV (the margin of error given in the ISO specifications). Note that these tests are based on the sRGB JPEG output of the cameras, in accordance with ISO 12232:2006, the standard used by camera manufacturers. In our tests we found that measured ISOs from the G1 X Mark II are within 1/6 stop of their stated value, so can be considered accurate.
Noise and Noise Reduction (JPEG)
ISO range noise comparison
For the noise test below we've included the PowerShot G1 X (for obvious reasons), the Sony Cyber-shot DSC-RX100 II (being another large-sensor enthusiast compact), and a Canon EOS 700D (Rebel T5i) as an APS-C representative.The G1 X Mark II keeps noise levels relatively low, with the real jump happening at around ISO 6400. If you look at the stamps, it's at that point that detail goes south - meaning it's keeping noise down by applying quite high levels of noise reduction. The Sony RX100 II - which has a more modern 1"-type BSI-CMOS sensor - shows less measured noise than the Canon (a result of higher noise reduction being applied). The G1 X II has considerably less noise than the EOS 700D, which uses similar sensor technology but an older processor. The G1 X II's noise performance is likely to be down to its use of the fairly strong noise reduction introduced in the EOS 5D Mark III. While there has been much talk about the G1 X Mark II being noisier than its predecessor, the difference is actually very small. We wouldn't be surprised to find the two cameras use the same sensor, but with the Mark II making use of a slightly smaller region of it. There are three JPEG noise reduction modes on the G1 X II: standard, low, and high (there is no 'off'). The default, as you might have guessed, is standard. These modes behave exactly are one would expect. The high NR setting has less noise than NR Standard, and so on.
JPEG Dynamic Range/Tone Curve
Our Dynamic Range measurement system involves shooting a calibrated Stouffer Step Wedge (13 stops total range) which is backlit using a daylight balanced lamp (98 CRI). A single shot of this produces a gray scale wedge from the camera's clipped white point down to black (example below). Each step of the scale is equivalent to 1/3 EV (a third of a stop), we select one step as 'middle gray' (defined as 50% luminance) and measure outwards to define the dynamic range. Hence there are 'two sides' to our results, the amount of shadow range (below middle gray) and the amount of highlight range (above middle gray).
To most people highlight range is the first thing they think about when talking about dynamic range, that is the amount of highlight detail above middle gray the camera can capture before it clips to white. Shadow range is more complicated; in our test the line on the graph stops as soon as the luminance value drops below our defined 'black point' (about 2% luminance) or the signal-to-noise ratio drops below a predefined value (where shadow detail would be swamped by noise), whichever comes first.
For our comparison of JPEG dynamic range we're comparing the G1 X Mark II against the Sony Cyber-shot DSC-RX100 II, Olympus E-M10 (as a Micro Four Thirds representative), and the Canon EOS 700D is the APS-C example.
With its DR Correct feature turned off, the G1 X II captures a bit more highlight tone that its predecessor, but the Sony RX100 II wins the day. If you compare just the G1 X II and RX100 II, it appears that the Canon goes deeper into the shadows, but as you'll see on the Image Quality page, noise is already having an impact in that region, and the Sony comes out on top.
The G1 X II has both dynamic range and shadow correction. These are for JPEG shooting only (and are disabled when using Raw+JPEG) and can be used separately or together. DR Correction has four options: off, Auto, 200%, and 400%. Much like Fujifilm cameras, the camera is using three different amplification/tone curve combinations to capture and incorporate more highlight detail.
In order to allow for this extra room for highlight tone, the camera boosts the minimum ISO. For DR 200%, that's ISO 200, and double that for DR 400%. Below you can see how the tone curve changes at the different DR settings:
As you can see, the DR correction feature gives you more information in the highlights, and increasingly smooth roll-off. This comes at the cost of increased noise in the shadows. Because these modes push tones deeper into the camera's Raw response, the shadow regions of each mode become increasingly noisy (as we saw on the Image Quality page, noise is already lurking in the shadows).
As mentioned above, there is also a shadow correction mode, which has options of 'Off' and 'Auto'. Below you can see the effects of those two options:
The Shadow Correct feature does indeed pull up the shadows, by about two stops according to our tests. It also affects midtones, and makes the transition to white more abrupt. It can be combined with the DR Correction modes but this risks making the shadow noise even more visible.
Jul 20, 2016
Nov 21, 2016
Nov 2, 2016
Apr 4, 2016
|I see you by Phocal|
from Animal eye reflection
|Apocalyptic Sunset by Impact Photo|
from A wheel good photo!
|AU4_6418_BB-35 by DaveInHouston|
After conducting a series of safety tests, the FAA is recommending that all airlines ban cameras and other electronics with Lithium Ion batteries from checked baggage. The agency believe the risk of a catastrophic fire and explosion is too great.
The Pixentu jackets keep you and your gear warm and dry, offering useful features like lens and tripod pockets, in addition to some quirky ones like an extended hood to protect your camera from the rain.
Adobe gave the audience at MAX a sneak peek at some exciting new technology its developing. It's called Adobe Cloak: a highly capable Content Aware Fill-like feature for video editors.
Earlier today, Flickr moved its photo book printing service over to a third party services, and stopped offering any wall art options entirely.
The patent details a flipping rear LCD screen so large, Canon has had to hide the rear dial and several buttons underneath.
We've added a selection of extra images to our Nikon D850 gallery. As part of the process of rounding off the review we made sure a number of us had shot the camera in a variety of situations, we've added those shots to the gallery to give a broad cross section of how the camera performs.
Wiral LITE is an affordable, easy-to-use cable cam system that can do things a portable slider simply can't do, and go places no slider would dare go.
Not happy with the recent demise of Lightroom as a stand-alone, subscription free service? Macphun's got your back... or they will in 2018.
Once connected to a PC, Mac, tablet or smartphone, Pholio automatically searches through the device storage and backs up all images and videos—complete with auto-tagging and intelligent search capabilities.
The 360 Round uses eight horizontally positioned camera pairs and one upward-pointing single lens to capture and livestream panoramic 4K 3D content.
Introduced just three years ago, the Samsung NX1 was both a technological tour-de-force and a great camera to use, earning one of the highest scores we've ever awarded and winning our 2015 Innovation Award. But its short-lived run in the photo world leaves us wondering what could have been.
The Fujifilm X-E3 is styled like a classic rangefinder, but features a built-in touchscreen, AF joystick, and electronic viewfinder – truly an old school meets new type of camera. Lay some eyes on our sample gallery to see how it performs in the real world.
Like it or not, Adobe is embracing a cloud-centric, AI-rich future with the introduction of Lightroom CC. And that's a great thing, though you may not see it now, argues Rishi Sanyal.
The announcement of a more cloud-integrated Lightroom product sees the death of the company's standalone version. This need to make payments in perpetuity (whether you choose Lightroom Classic or CC), chips away at the idea that your Lightroom library is a long-term solution, argues Richard Butler.
The XPro-C 2.4GHz wireless flash trigger that Godox released for Canon users last month now has a Nikon equivalent—the aptly named XPro-N. Sony, Fujifilm and MFT versions are in the works.
In the aftermath of hurricanes Harvey, Irma and Maria, camera and lens maker Sigma is extending its standard product warranty to cover damage caused by these three natural disasters.
The F4 Plus can can capture 360° stills, videos and broadcast livestream footage at 8K resolution... that's 7680 x 3840 pixels!
Lightroom is hogging the spotlight at Adobe MAX, but Photoshop CC got some substantial improvements as well. Find out what's new in the latest version of Photoshop CC.
The aptly-named 'Nude' app automatically detects NSFW images on your iPhone, moves them to a protected vault and deletes the original files in the camera roll and on iCloud.
The Zeiss Milvus family of manual-focus full-frame lenses just gained a new member. Meet the Zeiss Milvus 24mm F1.4: a fast, rugged new lens designed primarily for landscape and architecture photography.
Lightroom has built a brand new Lightroom CC from the ground up to be faster, easier to use, and cloud-based. The application formerly known as Lightroom CC will continue to exist, and will go by "Lightroom Classic CC."
Google Research did a deep dive on the Pixel 2 smartphone's background-blurring portrait mode that uses neural networking and dual-pixel technology instead of a dual-camera setup.
With the arrival of the PowerShot G1 X III, there are now seven Canon cameras built around the 24MP Dual Pixel sensor and Digic 7 processor. We take a look at the differences and what might prompt you to choose one over the others.
Meet the HP ZBook x2. The so-called 'world's most powerful and first detachable PC workstation,' it was built with creative professionals in mind, and is being debuted at Adobe MAX.
PDN sat down with Ahmed Fakhr, director of photography at RollingStone.com, to talk about how the famed publication is adapting to the changing photo and video needs of the modern era and how he 'evaluates the skills of potential contributors.'
Kudos to Canon. Earlier today, the camera giant announced that it had produced its 90 millionth EOS camera and 130 millionth EF-series lens.
The ROV Slider is a portable, motorized slider that promises to bring 'beautiful cinematic video and time-lapse' shooting to anybody with a smartphone, GoPro or DSLR that weighs less than 5lbs.
The new Surface Book 2 laptops come with Intel's 8th generation quad-core processors and NVIDIA GeForce GTX 1050 and 1060 GPUs. In other words: they pack a serious punch.
Leica is resurrecting a portrait lens from the 1930s: the Thambar-M 1:2.2/90. This lens features just 4 lens elements, and was famous for its spherical aberration that creates extremely soft images.
Google's Visual Core is an Image Signal Processor designed to power and accelerate HDR+ processing and other imaging tasks in the new Pixel 2 devices (and beyond).