Noise at ISO 6400 is comparable to the Sony A350 at ISO 3200, making images at ISO 6400 useful for small prints only. The K20D noise is well controlled through ISO 3200. ISO 3200 images are usable for small prints but are much too noisy for enlargements. By ISO 3200, noise has become an issue, but color is still very accurate at the Tungsten preset under tungsten light. By ISO 1600 we begin to see increased noise, but considering the crops are larger on screen than a 20x16 enlargement we supsect the images would still be very useful at ISO 1600 even for enlargements. Noise is well controlled through ISO 800, with little increase in noise. The Sony A350 exhibits very accurate color with the tungsten setting at all ISO settings.
Note: Full size images are between 3.5MB and 11.4MB! PentaxĬlick on any of the above image crops for the full image. A shareware EXIF viewer, OPanda IEXIP 2, is available at for download at Opanda. These files are huge, but they can be downloaded for those who wish to view the actual images or explore EXIF data embedded in each image. Links to the full JPEG images are also available on each camera sensitivity crop. The comparison to the Canon 5D sensor is presented on the next page. Despite the different fields of view, all Canon 5D cropped images are still maintained at 230x300 pixels. The second set of 5D images were shot with the same camera and 50mm lens moved closer to the image to try to maintain the same field of view. One set is taken from the same location and the 50mm lens provides a greater field of view on the 5D than on the 1.5X multiplier cameras. Therefore two sets of crops and full images are presented for the 5D. Since the Canon 5D is a full-size sensor the coverage of the 50mm is greater on the 5D than the two 1.5X multiplier sensors. The crop area on the 1.5X multiplier Sony A350 and Pentax K20D are represented by the red rectangle on the full image above.
All crops represent a view of 230x300 actual pixels cropped from the larger 14.2, 14.6, or 12.2MP images.