Camera Analysis

Camera quality has almost always been Nokia’s strongest suite, and the Lumia 900 isn’t an exception. The device builds on the Lumia 800 by including the same 8 MP rear facing camera module with 28mm effective focal length (in 35mm ‘units’), F/2.2 aperture, Carl Zeiss branding, and built around a 5 plastic element optical system. Like a number of other new Nokia phones, the Lumia 900 also includes a 4:3 and 16:9 option with unique horizontal field of views for both. Switch into the 16:9 mode and you get a wider field of view which uses the full horizontal extent of the sensor at 7 MP (resolution), or use 4:3 mode at 8 MP (resolution) and use the full height of the sensor. For example, I've uploaded a photo of the same scene taken in roughly the same position with both 7MP (16:9) and 8MP (4:3) for your perusal.

Where the Lumia 900 builds on the Lumia 800 is inclusion of a 1280x720 (1 MP) front facing camera for video calling.

Like other Windows Phones with front facing cameras, the primary camera application can switch between the front and rear camera for shooting photos and videos, but on the front facing camera settings go away. The rear facing camera still includes all the settings options that I’ve seen on previous Lumias - recall that this is one of the Windows Phone menus that does change between vendors depending on their camera emphasis.

To tackle image quality, we've turned to our standard image testing suite which consists of photographs taken at five locations in our test bench (3-7), our lightbox tests with the lights on, and lights off, and photos of an ISO12233 chart, a GMB color checker card, and finally a distortion chart. I've also taken miscellaneous photos during my limited time with the Lumia 900 which I've put in a gallery below. 

The Lumia 900 ends up performing very close to the 800 (unsurprisingly) and has great optical quality. In the distortion chart there's limited distortion, and in the test bench photos things end up nice and sharp pretty much everywhere. It goes without saying that obviously Nokia continues to have a dominant position in the smartphone camera space, even when it isn't building phones around the camera like with the N8 or PureVision 808.

Where the Lumia 900 does seem to struggle is white balance, as pretty much all the Lumias have weird color rendering in the lightbox test with lights on, creating a strange washed out cast. I would wager that this is more an outcome of the older ISP onboard MSM8x55/APQ8055 than anything else, and it's entirely possible that things will get better in later updates as Nokia continues to mess around with the sliders on Qualcomm's ISP. In addition, the preview image sometimes contains the colored center dot chromatic aberration we've seen on other phones, though the lens shading ISP does seem to fix it when you look at the actual captured images. As an aside, this is really another area where eventually moving to dual core SoCs will make a difference - the successors to 8x55 have better ISP. 

Video quality on the Lumia 900 is very good. Video on the rear camera is encoded at 14 Mbps 1280x720 at 30 FPS in H.264 baseline with CABAC and 1 reference frame, as opposed to the CAVLC I’ve seen on a number of other devices. This is also a pretty high bitrate for 720p, and the result is subjectively very good quality. Note that none of the Windows Phones can record 1080p yet due to the devices all using single core Snapdragons whose encoder only can handle H.264 at 720p or below. Eventually we’ll see 1080p as Windows Phone adopts dual core SoCs with the rumored Apollo update which include 1080p encoders that will even encode high profile video. Audio on the rear camera is stereo AAC at 86 kbps with 48 kHz sampling, it’s good to see the Lumia 900 doing stereo audio using those two microphones onboard.

Front facing video is 1.5 Mbps VGA at 30FPS with the same audio quality. One thing I did notice about the front facing video is that it doesn’t seem to obey the rotation or orientation. Even if the camera UI is rotated properly, video shot on the front facing camera is always portrait orientation (480 x 640). This is pretty annoying but probably just a bug.

I’ve done the usual thing and uploaded samples straight from the device to YouTube, and made them available for download if you want to look at quality without YouTube’s transcode.

720p Rear Camera Video

 

VGA Front Camera Video

 

Again, the Lumia 900 video looks good even if it’s just 720p thanks to a generous bitrate, and inclusion of stereo audio is also a plus. Eventually Windows Phones will do 1080p30 video encodes, but that’s something which will come with even better SoCs.

Performance Analysis Display Analysis
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  • RaistlinZ - Tuesday, April 03, 2012 - link

    2010 would have liked this phone. Reply
  • guidryp - Tuesday, April 03, 2012 - link

    Yeah, why are they getting a pass on a single core phone with abysmal browser performance as their flagship offering. Reply
  • hemmy - Wednesday, April 04, 2012 - link

    Abysmal? Please. Yes the benchmarks are poor but the browsing experience is significantly better than any Android phone with the sheer smoothness. Reply
  • eddman - Wednesday, April 04, 2012 - link

    I was watching a video the other day, showing scrolling and zooming in verge and engadget, which are very heavy websites, and was really surprised by how much fast and smooth WP is when it comes to browsing.

    I don't suppose a single-core android phone can be that smooth.
    Reply
  • Braumin - Wednesday, April 04, 2012 - link

    Because life isn't about benchmarks. Reply
  • juhatus - Wednesday, April 04, 2012 - link

    Totally wrong. Life is a benchmark.

    Now I need my milliseconds back.
    Reply
  • PeteH - Thursday, April 05, 2012 - link

    But without something to measure myself against, how will I know if I'm winning? Reply
  • TGressus - Wednesday, April 04, 2012 - link

    2010 would have used a browser.

    p~

    Seriously though, when you have to zoom and pan to view content, doesn't it feel like you are using the wrong device to begin with?
    Reply
  • jwcalla - Tuesday, April 03, 2012 - link

    As a software developer I can say that I've had nothing but heartache dealing with Qualcomm hardware so far. Closed-up proprietary stuff with no public API to help us out seems to be the preferred mode of operation.

    Ultimately a platform comes down to its developers. There are a limited number of developers and the platform that attracts the most and best from the lot is going to provide the greatest user experience. Apple figured this out long ago in the device space. Microsoft before that on the desktop. If Nokia and Microsoft understand this today, they'll do well.

    I don't care how well the hardware benchmarks, we need to be treated as something other than an afterthought if you want us to develop for your platform.
    Reply
  • Braumin - Wednesday, April 04, 2012 - link

    I'm sorry how is Visual Studio not the best for developers? Are you trying to write native code to WP7? I know it can be done, but most apps don't do it.

    I think the developer tools are top notch for WP7.5. Sure, there are some holes to fill (WP8) but they will get filled.
    Reply

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