Here is some more information taken from a review at http://briefmobile.com/nokia-lumia-900-review which was taken down but I gathered this from the search result text...
"Interestingly, the Lumia 900 photographs almost square-like pictures at 3264 x 2448 pixels. There's a 3x digital zoom and 100-millimeter minimum focus range on the Lumia 900, and images are saved as JPEGs with fully in-tact EXIF data. The camera software is basic, but impressive. Touch-to-focus accompanies the included auto-focus, and geotagging based on GPS mapping attaches location data to taken photographs. Thanks to the quick auto white balancing, the Lumia 900 is an excellent shooter even on the sunniest days. The dual-LED flash works fairly well. The front-facing camera really impressed with its 1-megapixel photos, f/2.4 aperture, and 720p HD video. Although the sensor is only 1-megapixel, front-facing picture quality on the Lumia 900 was unrivaled by most modern smartphones."
Some image samples:
http://briefmobile.com/images/articles/WP_000015.jpg
http://briefmobile.com/images/articles/WP_000016.jpg
http://briefmobile.com/images/articles/WP_000017.jpg
http://briefmobile.com/images/articles/WP_000019.jpg
http://briefmobile.com/images/articles/WP_000020.jpg
http://briefmobile.com/images/articles/WP_000022.jpg
http://briefmobile.com/images/articles/WP_000025.jpg
http://briefmobile.com/images/articles/WP_000027.jpg
http://briefmobile.com/images/articles/WP_000030.jpg
http://briefmobile.com/images/articles/WP_000032.jpg
http://briefmobile.com/images/articles/WP_0000191.jpg
Video sample: Nokia Lumia 900 720p HD Camera Test - YouTube
However I don't see any indoor or low-light pictures which seems to be what the camera has trouble with.
"Interestingly, the Lumia 900 photographs almost square-like pictures at 3264 x 2448 pixels. There's a 3x digital zoom and 100-millimeter minimum focus range on the Lumia 900, and images are saved as JPEGs with fully in-tact EXIF data. The camera software is basic, but impressive. Touch-to-focus accompanies the included auto-focus, and geotagging based on GPS mapping attaches location data to taken photographs. Thanks to the quick auto white balancing, the Lumia 900 is an excellent shooter even on the sunniest days. The dual-LED flash works fairly well. The front-facing camera really impressed with its 1-megapixel photos, f/2.4 aperture, and 720p HD video. Although the sensor is only 1-megapixel, front-facing picture quality on the Lumia 900 was unrivaled by most modern smartphones."
Some image samples:
http://briefmobile.com/images/articles/WP_000015.jpg
http://briefmobile.com/images/articles/WP_000016.jpg
http://briefmobile.com/images/articles/WP_000017.jpg
http://briefmobile.com/images/articles/WP_000019.jpg
http://briefmobile.com/images/articles/WP_000020.jpg
http://briefmobile.com/images/articles/WP_000022.jpg
http://briefmobile.com/images/articles/WP_000025.jpg
http://briefmobile.com/images/articles/WP_000027.jpg
http://briefmobile.com/images/articles/WP_000030.jpg
http://briefmobile.com/images/articles/WP_000032.jpg
http://briefmobile.com/images/articles/WP_0000191.jpg
Video sample: Nokia Lumia 900 720p HD Camera Test - YouTube
However I don't see any indoor or low-light pictures which seems to be what the camera has trouble with.