DxOMark Mobile Report: Nextbit Robin
The Nextbit Robin doesn't look much different than most other smartphones, but its Android operating system and hardware have been optimized to make it the first real cloud phone. When the device is connected to Wi-Fi and plugged into the charger it automatically backs up apps and photos to the cloud. When you start running out of local storage space on the device, files and apps you haven't used in a while are automatically archived. In the camera department the Robin comes with a 13MP sensor, phase detection AF, an F2.2 lens, dual-tone LED flash and 4K video support. You can read more about the Nextbit automatic archiving process and how we got on with its camera in our real-life test in the Nextbit Robin quick review.
In its DxOMark test the Nextbit Robin scores 81 points, currently taking the18th position in the DxOMark Mobile ranking. In still image mode the testers liked the "good detail preservation and fast and generally accurate autofocus". On the downside, "noise is very visible in all conditions", chroma noise levels are high, "white balance is sometimes inaccurate in outdoor conditions, mostly with a blue cast" and high-contrast scenes show little shadow detail and some highlight clipping. The test team also criticized "fringing and demosaicing artifacts and visible ringing".
When shooting video the Robin showed "good autofocus behavior, generally good noise reduction in bright light and good stabilization in bright light conditions". However, testers also found a "loss of detail in low light, and occasional oscillations with exposure adaptation." Some clips also showed "tremors and jitter artifacts".
Color, Exposure and Contrast
The DxOMark team found the Nextbit Robin images to be "mostly well exposed" but also criticized "visible color shading in all conditions, sometimes inaccurate white balance in outdoor conditions" and highlight and shadow clipping in high-contrast scenes.
Overall DxOMark awarded the Nextbit Robin scores of:
- 4.4 out of 5 for Exposure
- 4.1 out of 5 for White Balance accuracy
- 3.1 out of 5 for Color shading in low light*
- 4.2 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 Nextbit Robin images show well preserved detail in all conditions and that "low light noise has a fine grain". On the downside, "outdoor noise has a large grain, chromatic noise is very visible and luminance noise very noticeable in low light".
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 (such as fine foliage, hair or 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's 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 edges are sharp and if fine details are visible. In-camera processing means that 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 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 the 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): 4.8 out of 5
- Texture (low light): 3.8 out of 5
- Noise (bright light): 3.6 out of 5
- Noise (low light) 3.1 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 have an impact on the visual appeal of the end result. DxOMark engineers measure and analyze a range of artifacts. Their findings after testing the Nextbit Robin are shown below:
- Fringing and demosaicing artifacts are very visible
- Visible ringing
- Color artifacts
- Sharpness 4.4 out of 5
- Color fringing 3.2 out of 5
- Ringing center 16.3%
- Ringing corner 10.1%
- Max geometric distortion -0.3%
- Luminance shading 7.1%
Distortion and Chromatic Aberrations
DxOMark also tests autofocus accuracy and reliability by measuring how much the acutance - or 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 dependent 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 setting, the Nextbit Robin performs well in all light conditions. The overall score is 96/100 in bright light and 83/100 in low light.
- Fast and generally accurate autofocus
- Occasional failure in bright light triggered mode
- Some irregularities in low light
The Nextbit Robin edge offers a dual-LED flash for illumination in very low light. DxOMark scored the camera a 80/100 overall for its flash performance.
- Flash images are well exposed
- Accurate white balance
- Noise is visible in areas of plain color
- Slight autofocus and exposure irregularities
Overall DxOMark Mobile Score for Photo: 82 / 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. Overall, DxOMark found the Nextbit Robin's video mode to perform very well, with fast autofocus, efficient stabilization and good color. On the downside, some noise is visible, especially in low light.
- Good autofocus behavior
- Generally good noise reduction in bright light
- Good stabilization in bright light conditions .
- Loss of detail in low light conditions
- Occasional oscillations during exposure adjustment
- Tremors and jitter artifacts
Overall DxOMark Mobile Score for Video: 78 / 100
DXOMark Image Quality Assessment
With a DxOMark Mobile score of 81 the Nextbit Robin takes the 18th place in the DxOMark smartphone rankings. The test team liked the accurate AF and good detail in all light conditions but weren't too happy with high levels of both luminance and chroma noise. They also criticized the sometimes unreliable white balance in daylight, limited dynamic range and several types of image artifacts, such as fringing, ringing and moiré.
In video mode the Robin's AF works reliably and footage shows efficient noise reduction and stabilization in bright light. On the downside, detail decreases noticeably in low light and some clips show jitter artifacts and abrupt exposure changes. For a more detailed analysis, visit www.dxomark.com.
Feb 20, 2016
Sep 20, 2017
Sep 23, 2017
Sep 22, 2017
|.....the ROYAL LOTUS 2017/08/25-NEW YORK..... by Chiwat|
from Wild flowers
|Coffee and Mango cake by clicker88|
from Another cup of coffee
The new iZugar 3.25mm F2.5 super fisheye lens offers an insane 220-degree angle of view. That means it can basically see behind itself... good luck keeping your feet out of the shot.
You'll laugh, you'll cry, you'll remember that time you took a picture of the frozen pizza baking directions.
A Craigslist poster has discovered the worst possible way to photograph a car: taking pictures of pictures displayed on a cracked and scratched up smartphone screen.
With the iPhone X coming out soon, the title probably won't last, but the iPhone 8 Plus is officially the best smartphone camera DxOMark has ever tested, and the iPhone 8 is second.
Kodak's new Facebook Messenger chatbot is trying to bring back the 'Kodak Moment' by digging up your old social media photos and trying to sell you prints and custom coffee mugs.
Affinity Photo for iPad was touted as "the first full blown, truly professional photo editing tool to make its way onto the Apple tablet." This update makes it that much more convenient.
Yashica has released a new teaser video, and this one claims they'll be releasing an "unprecedented camera" in October on Kickstarter. Ready... set... speculate!
Storage solutions company Synology has just released its very first 6-bay NAS tower. Combined with the DX1215 expansion units, it can hold and control up to thirty drives.
We're always expanding our collection of product overview content, and we've just added videos for the Canon EOS 6D Mark II, the EOS Rebel SL2 and EOS M6.
The venerable Canon PowerShot G1 was announced seventeen years ago this week, marking the start of a line of enthusiast-focused compacts that's still alive and kicking.
Super macro photographer Can Tuncer captured these incredible close-ups of a single peacock feather using a special setup and three different microscope lenses.
After successfully crowdfunding the Biotar 75mm F1.5, Oprema Jena is at it again. This time they're bringing back the Biotar 58mm F2: the world's only lens with a 17-blade aperture.
Adobe's move to a subscription model is treating it very well indeed. The company has posted record revenue for the second quarter in a row, hauling in a mind-boggling $1.84 billion.
More details have emerged about the potential sale of Blackstone's 45% stake in iconic camera brand Leica.
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.