DxOMark Mobile Report: Blackberry Z10
Blackberry, once the undisputed market leader in the smartphone world, has continuously been losing market share since the launch of the iPhone in 2007 and many were probably expecting the brand to totally disappear in a not too distant future.
However, with its new Blackberry 10 operating system the Canadian manufacturer is making an attempt to become relevant again in the mobile space. Blackberry debuted the OS with two new devices. While the Q10, with its physical keyboard, follows in the footsteps of earlier Blackberry models, the Z10, which we cover here, features a touchscreen, placing it in direct competition to Apple's iPhone and high-end Android models from Samsung, LG, HTC and the like.
The DxOMark Mobile Report includes DxO Lab's usual industrial-quality scientific measurements. Its imaging experts have analyzed 14 aspects of mobile imaging including detailed image quality assessment, flash performance, autofocus reliability and more to calculate a final score. This report will be integrated into ur full review once it is finsihed but for now scroll down to find out how the Blackberry Z10's camera performed in the DxO lab tests.
Blackberry Z10 headline features:
- 8-megapixel camera, backside-illuminated CMOS sensor
- F2.2 lens, 5 elements
- 2MP front-facing camera
- 4.2-inch touchscreen (1280 x 786 pixels, 356ppi)
- 1.5GHz dual-core CPU
- 2GB RAM
- 16GB of internal storage
- MicroSD card slot
With a DxOMark Mobile score of 67 the Blackberry Z10 is ranked toward the lower end of the DxO smartphone ranking. Its score is one point above the HTC 8X and Nokia Lumia 920 Windows phones, but it cannot keep up with the best in class such as the Nokia 808, Apple iPhone 5 or Samsung Galaxy S3.
The DxOMark team report that the Blackberry Z10 captures images with "Nice detail preservation including in low light conditions," "good white balance," overall good auto exposure" and "accurate autofocus in most situations."
On the downside: Images show "very strong luminance noise in low light," "clearly visible color shading with tungsten light source in low light or D50 lighting" and "slight color fringing. When using the flash, white balance can be inaccurate." Color shading occurs when flash is mixed with a tungsten light source.
In video mode, DxOMark's engineers reported that the Blackberry Z10 offers "reactive autofocus with some tracking abilities," but on the downside video footage shows "visible color non-uniformities," "perfectible texture reproduction" and provides "inefficient video stabilization."
Color, Exposure and Contrast
The DxOMark team found that the Blackberry Z10's images show "overall good auto exposure," "nice and pleasant colors outdoors" and "good white balance." However, the Blackberry tends to underexpose in low light and shows "slight color shading with tungsten light source in low light or D50 lightings." Because of this DxOMark scored the Blackberry Z10 at 81/100 for color in bright light and 65/100 in low light.
Overall DxOMark awarded the Blackberry Z10 scores of:
- 4.2 out of 5 for Exposure
- 4.0 out of 5 for White Balance accuracy
- 3.0 out of 5 for Color shading in low light*
- 3.5 out of 5 for Color shading in bright light*
- 3.0 out of 5 for Color Rendering in low light
- 4.5 out of 5 for Color Rendering in bright light
*Color Shading is the nasty habit cellphone cameras have of rendering different areas of the frame with different color shifts, resulting in pictures with, for example, pinkish centers and greenish corners.
Noise and Details
DxOMark's engineers reported that the Blackberry Z10 image output shows "nice detail preservation including in low light conditions." On the other hand luminance noise is "very strong in low light conditions."
Texture Acutance is a way of measuring the ability of a camera to capture images that preserve fine details, particularly the kind of low contrast detail (textures such as fine foliage, hair, fur) that can be blurred away by noise reduction or obliterated by excessive sharpening.
Sharpness is an important part of the quality of an image, but while it is easy to look at an image and decide visually whether it's sharp or not, the objective measurement of sharpness is less straightforward.
An image can be defined as "sharp" if its edges are sharp and if fine details are visible, but in-camera processing means it's possible to have one of these (sharp edges) but not the other (fine details). Conventional MTF measurements tell us how sharp an edge is, but have drawbacks when it comes to measuring fine detail preservation. Image processing algorithms can detect edges and enhance their sharpness, but they can also find homogeneous areas and smooth them out to reduce noise.
Texture Acutance, on the other hand, can qualify sharpness in terms of preservation of fine details, without being fooled by edge enhancement algorithms.
At first sight, the images from these two cameras may appear equally sharp. A sharpness measurement on edges will indeed confirm this impression, and will even show that the second camera is sharper. But a closer examination of low contrasted textures shows that the first camera has a better preservation of fine details than the second. The purpose of the Texture Acutance measurement is to qualify this difference.
Visual Noise is a value designed to assess the noise in an image as perceived by the human visual system, depending on the viewing condition (size of image, size of screen or print, viewing distance). The measurements have no units and can be simply viewed as a weighted average of noise standard deviation for each channel in the CIE L*a*b* color space. The lower the measurement, the less noise in the image.
Noise and Detail Perceptual scoring
- Texture (bright light): 4.5 out of 5
- Texture (low light): 3.0 out of 5
- Noise (bright light): 3.5 out of 5
- Noise (low light) 2.0 out of 5
Phone cameras, like entry-level compact cameras, tend to suffer from artifacts such as sharpening halos, color fringing, vignetting (shading) and distortion, which can impact on the visual appeal of the end result. DxOMark engineers measure and analyse a range of artifacts. Their findings after testing the Blackberry Z10 are shown below:
- Slight loss of sharpness in image corners
- Strong color fringing
- Slight ringing
- Sharpness 4.0 out of 5
- Color fringing 4.0 out of 5
- Ringing center: 14.1%
- Ringing corner 6.1%
- Max geometric distortion -0.29%
- Luminance shading 26%
Distortion and Chromatic Aberrations
DxOMark also tests autofocus accuracy and reliability by measuring how much the accutance -- sharpness -- varies with each shot over a series of 30 exposures (defocusing then using the autofocus for each one). As with other tests these results are dependant on the viewing conditions (a little bit out of focus matters a lot less with a small web image than a full 8MP shot viewed at 100%). Using the 8MP equivalent condition the Blackberry Z10 results are decent but not quite up there with the very best. The overall score is 75/100 in bright light and 64/100 in low light.
- Autofocus is accurate and repeatable in bright light conditions
- Good sharpness levels even in low light
- Autofocus is slow
DxOMark scored the Blackberry Z10 62/100 overall for its flash performance, deducting points for occasional white balance issues in mixed light.
- Good detail preservation, exposure and color rendering
- Stable autofocus with flash
- Strong noise
- White balance is slightly blue with no light and turns red when flash is mixed with tungsten lighting
- Color shading when mixed with tungsten light source
Overall DxOMark Mobile score for Photo: 67 / 100
DxOMark engineers put phone cameras through a similarly grueling set of video tests, and you can read their full findings on the DxOMark website here. We'll simply summarize for you. DxOMark found the Blackberry Z10's exposure and color reproduction to be good. However, the white balance is unreliable in tungsten light and image stabilization performance is under par.
- Reactive autofocus with some tracking abilities
- Visible color non uniformities
- Perfectible texture reproduction
- Perfectible video stabilization
Overall DxOMark Mobile score for Video: 66 / 100
YouTube channel Filmmaker IQ has put together a very interesting, technically detailed, and scientifically accurate description of exactly how various image sensors (and photographic film) work. One of the best overview videos we've seen.
In Part 1 of his series on photographing Greenland in winter, landscape photographer Erez Marom shares the freezing details of his arrival on the town of Uummannaq where the temperature was -25°C. Still, he went out shooting.
SmugMug has acquired struggling photography site Flickr for an undisclosed sum, with CEO Don MacAskill promising to give the neglected photo sharing service 'the resources that it deserves'.
The APO-Makro-Plasmat 105mm F2.7 is Meyer Optik's latest Kickstarter lens revival, and it promises "natural sharpness, unbelievable color reproduction, and a glowing bokeh united at every step of the aperture" ... whatever that means.
The update also comes with "post-scan cloud processing," which allows you to render 3D models with 4K resolution textures for better detail and realism.
Chinese accessories brand Meike has announced it will introduce an 85mm F1.8 lens for Canon and Nikon full frame DSLRs that will feature autofocus. This will be the company’s first AF lens.
The World Photo Organization has finally revealed the overall winners for the 2018 Sony World Photography Awards, including the coveted Photographer of the Year, Open Photographer of the Year, Youth Photographer of the Year, and Student Photographer of the Year winners.
Venus Optics has unveiled four new lenses that will ship later this year: a wide-angle zoom for Sony FE, a circular fisheye for Micro Four Thirds, a wide-angle lens for the medium format Fujifilm GFX, and a 2x Ultra Macro for multiple full-frame mounts.
The One Backpack is a 5-in-1 modular backpack that can be used as a camera bag, work & gym pack, suit carry backpack, travel pack or tech-backpack.
This highly-specialized lens is perfect for sports, action and wildlife photography. Check out these first sample images for a taste of what it's capable of.
For KFC Hong Kong’s latest ad campaign, New York City-based advertising agency Ogilvy and Mather used Photoshop to magically morph pieces of flaky fried chicken into fire and smoke in various scenes.
The Android and iOS app from Surpuba AR lets you place animated 3D models in real-world environment using augmented reality technology. You can alter poses and location, insert lighting equipment, and more... right from your phone or tablet.
Under the agreement, the two companies will work together to develop Oppo's smartphone camera roadmap, covering optical zoom, depth mapping and other innovative imaging features that dual cameras allow.
Canon is jumping into the portable printing game with the new IVY Mini Photo Printer: a rechargeable battery-powered printer for creating 2x3 prints and stickers of your smartphone snaps on-the-go.
The program first launched last year, but only as a temporary promotion limited to previous-generation GoPro cameras exchanged for discounts on current-generation models. This time around, GoPro is accepting nearly any digital camera in any condition.
One of the most usable 360° cameras on the market is getting even better. With its latest update, Rylo adds a 180° mode, bluetooth remote capture, and a cinematic motion blur effect for your timelapse shots.
Phase One has released the first major update to its Capture One Pro 11 photo editing program. The update adds support for 8 new cameras and 16 new lenses, and includes several new features and functional improvements that speed up workflow.
We recently got our hands on Samsung's latest and greatest smartphone, the dual camera, variable aperture Galaxy S9+, and took it to mostly sunny Southern California for a long weekend.
It's spring, and that means wedding season is upon us! If you're one of the many photographers planning wedding shoots this year, this is a great time to think about including aerial photography in your plans.
The first firmware update for the Sony a7 III addresses an issue in video mode wherein "blinking pixels" would show up along the base of footage recorded with certain settings.
Researchers with Switzerland's EPFL have developed a soft exoskeleton that enables its wearer to control a drone using their upper body. The human-robot interface is said to offer "natural and intuitive control of drones."
Photokina has released an official list of confirmed exhibitors for the 2018 expo, quieting rumors that major brands like Canon and Profoto might follow in Elinchrom's lead and skip this year's show.
For owners of Sony's a7R III, a9 and the new a7 III, there's now an easy fix for the rare but dreaded 'striping' in backlit shots with lots of flare. Click through to learn more.
The team behind the ubiquitous JPEG format has unveiled an all new image format designed to quickly and efficiently stream content across wired and wireless networks alike. Surprisingly, it actually uses less compression than traditional JPEG.
Canon USA has released a promotional video showcasing its latest CMOS sensor technology. Albeit over daraticized, it’s an interesting overlook at the work it’s continually putting into its camera systems.
The large-format digital LargeSense LS911 is the "world's first 8x10 digital single shot camera for sale." The camera features a 12-megapixel 9x11-inch monochrome CMOS sensor, which translates into massive 75 micron pixels.
Pricing and availability have been announced for Tokina's high-end Fírin 20mm F2 FE AF autofocus lens for Sony E-Mount. If you're curious about this lens, you'll be able to pick up your own starting in June for $950 USD.
It's the copyright lawsuit that refuses to die. In September 2017, PETA finally settled its monkey selfie lawsuit with photographer David Slater, but the request to dismiss the case has since been rejected by the Ninth Circuit Court of Appeals.
As part of his ongoing ‘Good Light’ YouTube series, London-based photographer Sean Tucker has created a simple tutorial on how to find good natural light for portraits.
The 2018 Pulitzer Prizes were announced yesterday, with the photography awards going to photojournalist Ryan Kelly for image of a car plowing into protesters in Virginia, and the entire Reuters photo staff for a series on Rohinga refugees fleeing persecution.