Yes but, again, you only get a 5MP crop off the sensor. No oversampling is done on those photos and that is what really sets the 1020 apart to begin with.
Actually it is not a 5MP crop from the sensor, the ramifications of such a situation preclude it. If the WP cam app just took a 5MP crop, then one of two things would be true, and we can see that both are false:
- All images taken with the WP cam app would be at the 2.7x "zoom." This is not the case, as evidenced by observation of pictures taken by the cam app.
- The optics of the 1020 implement an extremely wide field of view so that the projection on ~12% of the sensor surface area would correspond to the 28mm equivalent FOV. Further, since this would be equivalent to a fish-eye lens, the WP cam app would need to do all the necessary geometric remapping to correct for the distortion. If the optics of the 1020 were capable of this, I'm quite sure it would have been marketed as a feature, and the complexity of the distortion correction algorithms is an order of magnitude (or more) higher than the complexity of downsampling, plus causes a loss of image quality. We can safely conclude this is also not the case.
This is also in line with statements by Nokia, that the default cam app will save a downsampled 5MP image. The image quality differences in that article are due to post-processing changes. Nokia has openly admitted to changing the 1020 to allow for a grainier more film-like image, and the WP cam app does it's own post-processing which doesn't seem as good as Nokia's admittedly. (Plus, the WP cam app auto adjusts ISO, so it may have chosen a poor ISO in that situation.)
Also, the author of the article you posted already made an update, mentioning that the downsampling is done in realtime.
http://allaboutwindowsphone.com/features/item/18387_Want_best_purity_Think_about_N.php