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JPEG/TIFF Image Size & Quality

The CD200 features two different JPEG compression modes, either FINE or STANDARD. This allows you to select from a variety of image resolutions (1600 x 1200, 1600 x 1072 (3:2), 1024 x 768 and 640 x 480) in combination with either JPEG FINE, JPEG STANDARD or TIFF image quality, a total of 12 different image size / quality combinations.


Standard Test Scene

To give an impression of what some of the combinations of image size and quality produce the table below is a cross reference of some of them:

  • 1600 x 1200 TIFF
  • 1600 x 1200 FINE JPEG
  • 1600 x 1200 STANDARD JPEG
  • 1024 x 768 FINE JPEG
  • 640 x 480 FINE JPEG

Images below are cropped 240 x 90 area of the image magnified 200% (nearest neighbour).


 
2048 x 1536
TIFF
5,627 KB (Not available for download)
JPEG
FINE

829 KB
JPEG
STD

479 KB
 

 
1024 x 768
JPEG
FINE

355 KB
 

 
640 x 480
JPEG
FINE

151 KB

As you can see close-up there's very little difference between the TIFF and JPEG FINE. As we've seen in the latest batch of Sony digital cameras it appears they are taking a "hands off" approach to image sharpening, their algorithms are far less aggressive than in the past leading to smoother, cleaner images with less artifacts / halo effects.


ISO (Sensitivity) Adjustment

ISO equivalence on a digital camera is the ability to increase the sensitivity of the CCD to allow for faster shutter speeds and/or better performance in low light. The way this works in a digital camera is by "turning up the volume" on the CCD's signal amplifiers, nothing is without its price however and doing so also amplifies any noise that may be present and often affects colour saturation.

The CD200 features three selectable ISO sensitivities of 100, 200 and 400 as well as the same Auto mode we saw on the CD300/S70/S75 (varies sensitivity between ISO 100 and 300 automatically depending on available light). The shots below were taken under normal lighting conditions.

ISO 100, 1/13s, F5.0
ISO 200, 1/25s, F5.0
ISO 400, 1/50s, F5.0

A fairly impressive performance from a 2 megapixel digital camera, indeed I'd go so far as to say probably the cleanest ISO 200 / 400 we've seen yet from a camera in this class.

DISCLAIMER: I'd like to point out that the camera reviewed WAS a pre-production unit and we may well see cleaner images from a final production unit (we will update the review later).


Picture Effects

Just as with the S75 (and most other Sony digital cameras) the CD200 features four 'post processing' picture effects which can be used to stylise your images.

No picture effect Negative Art picture effect Sepia picture effect
Black & White picture effect Solarize picture effect Date & Time Stamp

Note that as well as this you can use the "TEXT" mode to shoot black and white (2 colour) photocopy style GIF's (useful for copying text, although slow to process).

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