Panasonic Lumix DMC-GF2 Review
Resolution Chart Comparison (JPEG and RAW)
Images on this page are of our standard resolution chart which provides for measurement of resolution up to 4000 LPH (Lines Per Picture Height). A value of 20 equates to 2000 lines per picture height. For each camera we use the relevant prime lens (the same one we use for all the other tests in a particular review). The chart is shot at a full range of apertures and the sharpest image selected. Studio light, cameras set to aperture priority (optimum aperture selected), image parameters default. Exposure compensation set to deliver approximately 80% luminance in the white areas.
What we want to show here is how well the camera is able to resolve the detail in our standard test chart compared to the theoretical maximum resolution of the sensor, which for the charts we shoot is easy to work out - it's simply the number of vertical pixels (the chart shows the number of single lines per picture height, the theoretical limit is 1 line per pixel). Beyond this limit (when talking about line pairs usually referred to as the Nyquist frequency) the sensor cannot faithfully record image detail and aliasing occurs.
This limit is rarely attained, because the majority of sensors are fitted with anti-aliasing filters. Anti-aliasing filters are designed to reduce unpleasant moiré effects, but in doing so, they also reduce resolution (the relative strength and quality of these filters varies from camera to camera). In theory though, a sensor without an AA filter, when coupled with a 'perfect' lens, will deliver resolution equal to its Nyquist limit. Therefore, even though it may be effectively unattainable with normal equipment in normal shooting situations, an understanding of a sensor's theoretical limit provides a useful benchmark for best possible performance. Nyquist is indicated in these crops with a red line.
On this page we're looking at both JPEG and Raw resolution. For a (more) level playing field we convert the latter using Adobe Camera Raw. Because Adobe Camera Raw applies different levels of sharpening to different cameras (this confirmed) we use the following workflow for these conversions:
- Load RAW file into Adobe Camera RAW (Auto mode disabled)
- Set Sharpness to 0 (all other settings default)
- Open file to Photoshop
- Apply a Unsharp mask tuned to the camera, in this case 100%, Radius 0.6, Threshold 0
- Save as a TIFF (for cropping) and as a JPEG quality 11 for download
|JPEG (4000 x 3000) 4.7MB||RAW (4000 x 3000) 3.0MB|
Despite high levels of sharpening in the camera JPEGS (there are distinct halos around the numbers for instance), they don't manage to show quite as much detail as the Adobe Camera Raw output. What the camera does achieve, though, is impressive suppression of moiré.
Overall the camera is capable of capturing an impressive level of detail but the JPEG engine doesn's always express it as well as it is with this high-contrast target. In low-contrast, similarly colored situations it doesn't always convey all the detail it's capturing.
Feb 18, 2014
Feb 24, 2011
Nov 4, 2010
Feb 24, 2014
|scrum break away by al booth|
from Sport competition
|Chinese Acrobat by lim yau tong|
|Parking Deck by Olaf R|
from Your City - Parking Garage
|Communication Tech by alberto_b|
|With & without by OBellini|
from Empty - Full
The Canon EOS 6D Mark II brings more resolution, better autofocus and faster continuous shooting to Canon's entry-level full-frame camera. And we've had the opportunity to shoot with one.
The Canon 6D Mark II will ship to consumers in August, but we've been able to do some shooting with a pre-production unit well in advance.
Rumors have been swirling around for a while, and Canon has just unveiled the long-awaited successor to the popular and long-serving EOS 6D. Read all about it in our hands-on preview.
Canon's latest entry-level DSLR is here. The new Rebel SL2 (EOS 200D) is the belated successor to 2013's Rebel SL1, billed at the time as the smallest and lightest DSLR on the market.
Nearly five years after the announcement of the EOS 6D, Canon has finally replaced it with the EOS 6D Mark II. The Mark II features an all-new 26.2MP Dual Pixel AF full-frame sensor, 6.5 fps burst shooting, a fully articulating touchscreen, 1080/60p video and much more.
Canon has announced the EOS Rebel SL2 (also known as the EOS 200D), which replaces the aging SL1. This ultra-compact DSLR features a 24MP sensor, DIGIC 7 processor, Dual Pixel AF system and a 3" fully articulating touchscreen LCD.
When one of his friends got a filter stuck on his $1,700 Canon EF 24-70mm F2.8L, former MythBuster Adam Savage removed it using an unlikely, terrifying tool: a band saw.
The New Yorker asked Magnum's famed photographers, in town for the agency's 70th anniversary, to go out and capture 'the fleeting beauty of New York City's golden hour.' This is what they shot.
Roger Cicala is a difficult man to impress, but he's been waxing lyrical over at Lensrentals about Sony's new 12-24mm wide zoom.
Glassware is one of the most challenging subjects to photograph, especially against a white background. This tutorial shows you how to do it with hardly any gear.
Handevision is now shipping its all-metal Iberit 90mm F2.4 short telephoto lens for Leica M-mount 35mm and full-frame cameras.
Isocell comprises four sub-brands: Bright, Fast, Slim and Dual which are tailored to specific mobile device market demands.
The new store will be located at the Fotografiska center for contemporary photography in Stockhom, Sweden and carry the full range of Hasselblad products.
A recent vacation gave Richard a chance to think about the needs of travel photography – and how our reviews might recognize the perfect travel camera.
Need more evidence that 2017 is the year analog begins its comeback? Well, welcome another new film stock to the world.
The winners of the 10th annual iPhone Photography Awards have been announced, and they're striking.
If you were disappointed by reports that the Sony a9 struggles with adapted Canon glass, you might be able to take some comfort from Metabones' latest update.
Blackmagic Design has dropped the prices of its Video Assist external monitor/recorders for a limited time. Prices of the SD card-based recorders will be reduced in all markets, while supplies last.
Instagram has started testing a new feature called 'favorites' that enables users to share photos with only certain people. Only a small number of users have access to the feature at this time, though it may roll out to everyone in the future.
Lensbaby has announced the Velvet 85 F1.8 for interchangeable lens cameras. The lens is available in Canon, Nikon, Sony E, Sony A, Pentax K, Samsung NX, Fuji X and Micro 4/3 mounts.
It's the end of an era. Parent company Micron has announced that they are discontinuing the Lexar retail brand. This includes 'memory cards, USB flash drives, readers, and storage drives.'
Youthful trainspotter turned adult photographer, John Sanderson has traveled across the United States, documenting the country's railroads. But you won't find any trains in his pictures.
Sony's new CMOS sensor is backside-illuminated and offers an all-pixel global reset function which should drastically reduce rolling shutter effect when panning.
Shoulderpod has converted its offerings into a lego-like modular system by offering all individual parts of existing products separately, allowing users to build exactly the rig they need for a specific project or simply replace a damaged part.
Photographer Felix AAA has spent the past ten years touring the world with a variety of musicians, capturing behind the scenes shots and portraits. He talks about some of his favorite images on the FujiFilm Blog.
A roll of film discovered in an Argus C2 from an Oregon Goodwill turned out to contain some incredible images – and has been re-united with the original owner's family.
Nikon's 28mm F1.4E ED appears to roundly complete the company's updated lineup of fast, professional prime lenses. We've already seen some initial images from a Nikon ambassador, but we've worked through a gallery of our own, with a lens of our own over the past week. Take a look.
Google is holding a competition that could see your Pixel photos gracing millions of screens.
Nikon's 100th birthday party continues worldwide as a distributor in Italy organized a one-of-a-kind feat: assembling the world's largest 'human camera' from over a thousand volunteers.
Ricoh has dropped the price of its Theta SC 360 spherical camera by to $199, a reduction of roughly $50. The camera features two 12MP sensors and can record Full HD video in addition to stills.