(Click on image or link to view full size image)

dimcorridor_es3310.jpg

This picture shows a shot of a corridor where the lighting conditions is very dim. It was taken using the DigiCam ES3310 digital camera. From this picture, we can see that the camera seems to add a lot of noise to the output image when the lighting conditions is very dim. This can be seen in the regions marked by the blue rectangles and I have also hightlighted them in the two pictures below.

Region of Blue Rectangles

You can also see that in the region marked by the red rectangle, the area is overexposed and the color has become washed out. This is because the camera settings was tuned to capture the regions under the dim light, and as a result, it has neglected the range of luminance that was present in the brighter regions (like that in the red rectangle). This caused all the pixels in that part to be be pushed to the hightest value, which is the color white. I checked the settings and found that for this picture, the exposure time was 1/4 sec, which is very long. The picture would be better if the camera could capture both details in bright and dark regions correctly. The same picture under the same lighting conditions was also taken using the Olympus D580 digital camera and the result is much better. You can find it here.