
JPEG/TIFF Image Size & Quality Samples

Standard Test Scene |
The F717 has two JPEG compression levels which can be combined
with a variety of image resolutions and JPEG FINE, JPEG STANDARD or TIFF
image quality.
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:
- 2560 x 1920 TIFF
- 2560 x 1920 FINE JPEG
- 2560 x 1920 STANDARD JPEG
- 2048 x 1536 FINE JPEG
- 1280 x 960 FINE JPEG
- 640 x 480 FINE JPEG
Images below are cropped 240 x 100 area of the image magnified
200% (nearest neighbour).
|
2560
x 1920 |
| TIFF |

14,403 KB (Not available for download) |
JPEG
FINE |

2,196 KB |
JPEG
STD |

1,211 KB |
| |
|
2048
x 1536 |
JPEG
FINE |

1,457 KB |
| |
|
1280
x 960 |
JPEG
FINE |

584 KB |
| |
|
640
x 480 |
JPEG
FINE |

144 KB |
Interesting to note that the TIFF image appears to be very
slightly softer, or 'less processed'. Other than that there's little reason
to use TIFF (unless you like the idea of using 14 MB a shot), JPEG Fine
provides all the detail with little in the way of artifacts (JPEG at least
- sharpening halos are clearly visible). JPEG Standard seemed to work
quite well, very few artifacts and a good saving in storage space.

Image Processing Adjustments
Another generation on and Sony still haven't caught up
with the majority of other prosumer level digital cameras in respect to
giving the photographer full control over the final 'look' of the image.
There's still no ability to control colour saturation (often too strong
for most) and no contrast (tone) parameter. Never mind some of the more
advanced features available in similar specified (and more importantly
priced) cameras like the DiMAGE 7Hi - selectable colour space, image filters,
user memories or a RAW capture mode. Lets hope Sony R&D are listening
and will give some control to the photographer in the next iteration of
prosumer digital cameras.
Sharpening
The only parameter you do have control of is sharpening. The DSC-F717
provides five levels of sharpening from +2 (hard) to -2 (soft). The slight
halo sharpening artifacts visible at the normal sharpening level (0) can
be reduced by using a sharpness level of -1 (although obviously at the
expense of detail sharpness).
 |
| Sharpness: +2 (Hard) |
 |
| Sharpness: +1 |
 |
| Sharpness: 0 (Normal) |
 |
| Sharpness: -1 |
 |
| Sharpness: -2 (Soft) |
|