Surprise! I have a review write-up and this time it is not a camera or lens, it is actually a smartphone, the Huawei P9. I acknowledge that Huawei P9 has been in the market for months now, and there have been dozens (perhaps even hundreds!) of reviews being posted online everywhere. Not only the usual gadget review sites, this time I also notice a handful of photography specific site reviewing a smartphone, and the most notable one being the review posted on DPReview. Therefore, there really is nothing much I can add to what has been posted and shared out there.
I was connected to Huawei Malaysia by an Olympus user (thanks heaps Grexer), and I was provided with a loan unit of a Huawei P9 for review purposes. I was immediately interested to try out the Huawei P9, considering it was heavily advertised as being "co-engineered with Leica". Leica's involvement, to what extent not being properly clarified, certainly piqued my interest to take a look at the P9 closer. The setup of the camera having dual modules, containing two image sensors that have corresponding two lenses was unusual. There have been mixed reviews thrown out there, several review sites (mostly gadget reviewers) concluded that the camera in the P9 is not as good as competition, while some actually praised the camera's imaging prowess.
I must emphasize that I am not a tech-junkie, and I will only be reviewing the camera and imaging performance of the Huawei P9 only. I will not be covering the phone review of P9, as I believe this has been done and you can read the many reviews available online by major tech/gadget review sites. I am not a professional photographer, I am merely a photo-enthusiast who shoots passionately as frequently as I can. I am not connected to Huawei in any other manner except for this arrangement of a loan review purpose. I shall approach the review of P9's camera the usual way I always do for my camera and lenses reviews on this blog: by shooting a large amount of photographs, and write my review based on the experience using the P9 out in real world situations and carefully scrutinize the image output from my PC monitor. I support my claims through evidence found in the images, which will be shown plentifully here in this review entry. You can say that this is a user-experience approach review of Huawei P9's camera capabilities.
Huawei P9 fits perfectly in my not so large hands.
The rear camera
Huawei P9 was co-engineered with Leica, and utilizes Summarit F2.2 lenses.
Two lenses for two image sensors, optimizing imaging performance. Will this work? Or is this just a gimmick?
Pro capture mode, which I used very often in my shooting with Huawei P9
Let's have a quick run down of the Huawei P9's camera specs:
1) Dual Camera System (12MP image sensors with 27mm F2.2 lenses)
There are two lenses, attached to two image sensors (one lens to one sensor each). The lenses were made based on Leica Summarit design, a 27mm wide angle equivalent focal length with aperture of F2.2. Huawei claimed that having two F2.2 lenses working at the same time allowed more light to be captured than a single lens, and this yields an approximately equivalent of F1.8 lens brightness overall. The two image sensors (Sony IMX 286 12MP sensors with 1.25µm pixel size) comprises of one monochrome only sensor on the left and a full color image sensor on the right. The color sensor works like any other ordinary image sensor, and is supported by the monochrome sensor which acts to increase the capture of useful fine details in the images. The megapixel count is 12MP, which is more than sufficient for smartphone usage, and I would rather have better per pixel sharpness, than have large pixel count with non-optimized pixels. Furthermore, another very important feature to be noted, which was allowed with the use of dual camera technology, is the ability to render shallow depth of field, which shall be discussed in point no. 3.
2) Pro Capture Mode (which is actually full manual control mode)
Huawei P9, like most high end smartphones, offers full manual control over their camera. The aperture is fixed at F2.2, and I believe that the camera uses electronic shutter. All other parameters can be adjusted: ISO 50-3200, Shutter Speed 30sec to 1/4000sec, AF Single, Continuous or Manual, Metering options, White Balance options and exposure compensation. I find myself tinkering with the exposure compensation a lot, as well as the ISO when I was dealing with low light situations.
3) Depth of Field Control
One of the biggest reason why many people upgraded from compact point and shoot or mobile phones to DSLR cameras, is the ability to render shallow depth of field, or in layman's terms, blurring the background off. The creamy, smooth and blur background is desirable, instantly making photographs look professional (yes actual photographers do not just blur the background of every single photograph and this technique should not be over-used, but let's save this for another discussion). The main reason why so many people gave up on their entry level DSLR system and jumped to more expensive full frame system is also due to the even shallower depth of field the full frame system is capable of, ultimately rendering even blurrier background. Traditionally Leica lenses have always been known to create beautiful bokeh (quality of the blur in the photo) and I am curious how this can be simulated in the Huawei P9. .
When the depth of field control is selected, you have no other adjustments available to you except the Autofocus Point and the selection of simulated aperture with options from F0.95 to F16. The smaller the number means the camera is simulating larger aperture to create blurrier background. After you capture the image, you can further fine tune the focusing area and readjust the aperture value if necessary.
1/33sec, ISO320, DOF Control at F0.95
1/33sec, ISO160, F2.2
1/137sec, ISO50, DOF Control at F3.2
1/111sec, ISO50, F2.2
Crop from previous image
1/1258sec, ISO50, F2.2
1/33sec, ISO250, F2.2
1/716sec, ISO50, F2.2
1/50sec, ISO80, DOF Control at F3.2
1/25sec, ISO320, F2.2
1/33sec, ISO250, F2.2
Crop from previous image
1/50sec, ISO160, F2.2
Crop from previous image
1/50sec, ISO50, F2.2
The image quality of Huawei P9 surpasses my initial expectations. The images of the lower ISO settings came out pleasantly rich in detail and high in contrast. Zooming in 100% into the images, reveals high level of fine details, which could be due to the sharp lenses working together with an additional monochrome sensor. I am pleased with the overall sharpness of the images.
Aggressive Noise Reduction
However, I do wish I can have control over the noise reduction applied to the JPEG images (I have not shot in RAW yet, but I thought for smartphone use, I would rarely shoot RAW, and this is true for most smartphone users as well). I do find that in some situations the noise reduction can become too aggressive, smearing useful details. It is also strange to note that the noise reduction is not applied evenly, and only to selected parts of the frame, and also varies from photo to photo. Nonetheless, I acknowledge that the image processing was tweaked to please the general crowd, who may become paranoid when they see just that tiny bit of high ISO noise present in their photographs. I just wish there is a way to turn it off, for those of us who do not mind a little bit of noise, but we want the details in the images preserved.
Color & White Balance
The white balance and overall color reproduction is life-like, and looks richly saturated. I am ok with the high contrast, high saturated, consumer-friendly look. If you want a more natural and neutral looking images, you may select the saturation and contrast settings to tone them down one or two notches to your liking. All images shown in this blog review entry were taken with Auto White Balance, and I did not tweak the settings.
Chromatic Aberration and Distortion Control
Now this is the surprise even to me, the images appear to be free from any visible barrel distortion, for a wide angle lens. I am not sure if the lens was good enough to produce minimal distortion, or it was the software processing after the images were shot to correct the distortion. It could have been both: good lens distortion control working hand in hand with superior software distortion correction to produce distortion free image. There was also no chromatic aberration, no noticeable purple fringing at all! Very impressive for a smartphone camera.
Generally AF of Huawei P9 was fast in good lighting conditions, and is a little slower in low light situations. There is nothing to write home about the AF on P9, I managed to secure important shots shooting on the streets, and what I do like very much about P9 is the accuracy of the focusing. I rarely do get miss-focused shots, and I came home with extremely high hit rate, which is wonderful to take note of. All my previous encounters of smartphone cameras (even high end ones) exhibited marginally higher chance of focusing errors. Even when it comes to close up shooting, the AF is dead on accurate, though slows down significantly as you move closer to the subject.
When the camera just wakes up, and you try to capture a shot immediately by touching the shutter release icon, the camera will exhibit a shutter lag, significant enough for me to miss several crucial shots. After the camera fully wakes up, the lag is reduced and will not happen until it wakes up again. I think this is purely the fault in the programming of the software controlling the camera, and can be improved for future updates. In case some of you are not familiar with the term shutter lag, it means there is a delay between the touch of the shutter release icon (capture button) and the moment the image is being captured. If there was no shutter lag, the capture of image is immediate. I have to clarify this because I have noticed MANY (yes, with all caps MANY) gadget review sites wrongly described slow autofocus as being shutter lag. Autofocus happens before shutter release, hence slow autofocus is slow autofocus, and has nothing to do with shutter whatsoever. Nevertheless, I believe this shutter lag issue on Huawei P9 will affect photographers who need super quick reflex in their shooting, and should not be a concern for ordinary smartphone users.
Overall Camera Operation
I find the native camera app to be quite a joy to use, and was basically smooth from start to finish. I spent a full day using the camera on Huawei P9, and encountered no bugs or issues. The settings on the PRO mode worked as indicated, and helped a lot in controlling my images the way I want them to be. The preview of the images were disabled which I liked very much, to prevent any delay in preparing for the next coming shot. I do think that whoever designed the app either have strong experience in using professional camera systems, or have consulted and worked closely with professional photographers.
The Huawei P9, having 5.2 LCD screen, is just perfect for my hand. I have a typical Asian male hand size, which is not that large. The camera is comfortable to hold, not too heavy, yet has some heft to give the overall stable feel while shooting. I do not like the too slippery feel of the metal body. The gripping could have been improved if the body material is non-slip, or textured.
Next I want to discuss about the Depth of Field Control. The following images were all taken with Depth of Field Control activated.
1/33sec, ISO320, DOF Control at F0.95
1/50sec, ISO125, DOF Control at F2.8
1/50sec, ISO80, DOF Control at F2.8
1/249sec, ISO50, DOF Control at F5.6
1/50sec, ISO200, DOF Control at F0.95.
1/50sec, ISO200, DOF Control at F0.95.
Same image as the previous one, but post-focus adjusted to The Flash instead of Green Arrow.
1/33sec, ISO160sec, DOF Control at F3.2
1/20sec, ISO640, DOF Control at F2.8
1/516sec, ISO50, DOF Control at F16
ABOUT DEPTH OF FIELD CONTROL
Let's get the obvious stuff out of the way. The Simulation of shallow depth of field is not as good, or looking as natural as the real large aperture lens on large image sensors. The transition from the in focus zones dropping off to the out of focus areas is still not as smooth as the real thing. There is no need to argue whether the current depth of field control can replace any large aperture real lenses, the answer is a solid no.
I do think, however that the results from the depth of field control looks very good on a smartphone level, and trumps many other similar feature on current offerings from other manufacturers. While the bokeh may not look as real as what the real lenses can create, the blurred off background still looks pretty good, and it does a decent job isolating the main subject from the distracting background. I can see the potential, and the usefulness of having a dual camera module, allowing smaller image sensor to gain control over depth of field. Certainly I strongly believe that the overall look and "natural-ness" of the bokeh can improve over time, and perhaps one day, the simulation can create such a good rendering of out of focus zone that we do not really need bigger camera formats to have shallow depth of field shots. That day is not now, and I do not think it will happen any time soon.
Nevertheless, I did have so much fun shooting a wide angle lens, on a small sensor format in a smartphone, yet having the ability to create blur background! The experience is quite surreal, and at one point I went "who cares if the bokeh is not real? It is still quite good and I believe the general crowd would definitely appreciate the ability to render shallow depth of field in their shots!" I must warn you though, it does not work ALL the time, and when you have multiple subjects, and a complex scene with a lot of lines and layers, the depth of field control can go haywire. Choose simple framing, one subject, and a simple, plain background to work with. The less to deal with, the better the result will be. One tip I can give you is not to set the aperture to wide open F0.95-F1.4 all the time. I often find results from F2.8 and narrower to be more appealing, looking more believeable, and having sufficient zone of the main subject looking sharp.
One of the biggest drawback is the inability to control any imaging parameters when using depth of field control. I do wish I can control ISO, and more importantly the Exposure Compensation. The metering of the Huawei P9 is reliable, but there are situations when the user needs to have their input and override camera decisions.
LOW LIGHT SHOOTING
Since the Huawei P9 is still using a smartphone size image sensor, I am not expecting miracles in this department, and I was right not to put my expectations too high. I find generally image quality is optimized shooting below ISO400. For low light conditions, pushing to ISO800 is still ok, the noise reduction kicks in effectively, minimizing high ISO noise, at the expense of fine details. I would avoid using ISO1600 unless for emergency only. At ISO1600, images come out soft, and rather blotchy. I would absolutely not use ISO3200. There is nothing nice to write about the ISO3200 image from the Huawei P9.
One of the feature which I do wish is built into the P9 is image stabilization system. I understand that having dual lenses and dual image sensors complicates things, and image stabilization will take too much work to make it happen in such unusual module. That aside, having a powerful image stabilization will help steady the shot and allowing use of lower ISO settings in similar shooting situation.
High ISO Comparison samples
ISO1600 Crop from previous image
ISO50, 6 seconds shutter speed, on tripod
crop from previous shot
HUAWEI P9 CAMERA REVIEW CONCLUSION
What I like:
Excellent image quality with high level of details and good sharpness
Very usable straight out of camera JPEG images
Fast and accurate AF
Depth of Field Control mode is useful for subject isolation, and is fun to use
PRO Capture mode allows full manual control over all imaging parameters
Solid camera native app, smooth and bug-free operations
Decent low light shooting
What I wish to be improved:
Aggressive noise reduction smears details, and is not consistent from image to image. No option to turn off.
Shutter lag happens immediately after camera wakes up
No manual control for Depth of Field Control mode
No image stabilization option
I have not tested everything about the Huawei P9, there are more features to try out, and further exploration will be necessary. Do not worry, I am still holding on to the loan unit for now and will be doing review extensions to over other important parts, such as the HDR function, the monochrome shooting (black and white) and many more!
If you have any questions please feel free to ask. I sure hope you have found this review of Huawei P9 useful.
Update (24/8/2016): Huawei P9 Review extension for Long Exposure photography is published!
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