Review: Nokia 808 PureView
Low Light - Output Modes Compared:
For this test I put the 808 on a tripod and shot the same scene at ISO 1600 at all four of its output resolutions. Light was provided by a single low-intensity tungsten bulb, and exposure was 1/25 sec at F2.4. I used a 2 second self-timer to make sure that everything stayed sharp.
|3MP (100% Crop)||5MP (100% Crop)|
|8MP (100% Crop)||38MP (100% Crop)|
3MP PureView versus 38MP>3MP
|3MP (100% Crop)||38MP downsampled to 3MP (100% Crop)|
|3MP (100% Crop)||38MP downsampled to 3MP (100% Crop)|
So is the difference between the various output modes big enough to justify shooting at 3MP when 5, 8 and 38MP are available? On the basis of these tests I'd have to say that in my opinion no, it isn't. The most significant benefit of shooting at 3MP and 5MP has already been highlighted - namely, a greater effective 'zoom' compared to 8MP, which in turn offers greater versatility than full-resolution mode, where you can't 'zoom' at all. The 808's 5MP PureView mode is a good compromise between resolution, filesize and versatility when it comes to framing, which is probably why Nokia made it the default. As I mentioned earlier in this article, I have also noticed that clipped highlights are slightly less of a problem in the 808's PureView modes compared to full resolution, but clipping (to some degree) remains an issue in all modes.
We wouldn't normally put a cameraphone through our studio comparison test, but given its impressive specifications we wanted to see how well the 808 PureView compares to the many different cameras in our database. We shot our studio scene twice - once at the 808's full resolution of 38MP and again at 8MP, in PureView mode. We chose to showcase 8MP because it is the highest resolution PureView mode, and as such, more comparable when it comes to examining images alongside those from dedicated compact and system cameras. Click the thumbnail below to view the studio comparison (output modes are selected via the 'ISO' dropdown).
This is our standard studio scene comparison shot taken from exactly the same tripod position. Lighting: daylight simulation, >98% CRI. Crops are 100%. Ambient temperature was approximately 22°C (~72°F). The 808 PureView was positioned on a tripod, and was set to flurescent WB. Exposure was adjusted using exposure compensation and the built-in ND filter to achieve near-parity of exposure between ISO sensitivity settings.
|Click the thumbnail image above to see how the 808 PureView performs in our studio comparison scene. (opens in new window)|
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