JPEG Image Size & Quality
The IXUS 330 provides three image resolution options (1600 x 1200, 1024 x 768, 640 x 480) in combination with three JPEG compression settings (Super-Fine, Fine, Normal). Note that the IXUS 330 doesn't have a RAW or TIFF uncompressed option.
 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 Super-Fine
- 1600 x 1200 Fine
- 1600 x 1200 Normal
- 1280 x 960 Super-Fine
- 640 x 480 Super-Fine
Images below are cropped 240 x 100 area of the image magnified
200% (nearest neighbour). The new detail below the resolution name (n
bpp) refers to the JPEG compression level used, bpp stands for 'bits per
pixel'.
| 1600 x 1200 | |
| S.Fine (5 bpp) |
 977 KB |
| Fine (3 bpp) |
 612 KB |
| Norm. (2 bpp) |
 299 KB |
| 1024 x 768 | |
| S.Fine (5 bpp) |
 463 KB |
| 640 x 480 | |
| S.Fine (5 bpp) |
 202 KB |
As we've come to expect Canon's "Super-Fine" JPEG mode provides TIFF-like quality in a JPEG file. At 5 bits per pixel it's a lower compression than most other manufacturers lowest compression JPEG mode (typically 4 bits per pixel). Granted, these JPEG's are large (file size) at their resolution but large CF cards are now relatively inexpensive and the pay-off are images with no JPEG artifacts.
Photo Effects
The IXUS 300 (S300) had only one photo effect, Black & White. The IXUS 330 now has a selection of five photo effects (similar to what we first saw on the S30/S40). These provide different "looks" to your final image or give you the ability to produce a more neutral (Neutral) or less sharpened (Low Sharpening) look.
Colour / Tone Effects
 |
 |
 |
| Off | Vivid | Neutral |
 |
 |
|
| Sepia | Black & White |
Sharpening Effect
 |
 |
| Normal | Low Sharpening |
