JPEG/TIFF Image Size & Quality


Standard Test Scene

The DiMAGE F100 offers a good range of resolution and image format options. You can choose from JPEG (three compression levels) or TIFF. In combination with a resolution of 2272 x 1704 (native CCD), 1600 x 1200, 1280 x 960 or 640 x 480.

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:

  • 2272 x 1704 TIFF ("Super Fine")
  • 2272 x 1704 JPEG FINE
  • 2272 x 1704 JPEG STANDARD
  • 2272 x 1704 JPEG ECONOMY
  • 1600 x 1200 JPEG FINE
  • 1280 x 960 JPEG FINE
  • 640 x 480 JPEG FINE

Images below are cropped 240 x 100 area of the image magnified 200% (nearest neighbour).


  		2272 x 1704
TIFF
11,352 KB (Not available for download)
JPEG
FINE
1,190 KB
JPEG
STD.
807 KB
JPEG
ECON.
470 KB
 

  		1600 x 1200
JPEG
FINE
599 KB
 

  		1280 x 960
JPEG
FINE
459 KB
 

  		640 x 480
JPEG
FINE
133 KB

In these samples it's difficult to see a big difference between TIFF and JPEG FINE, for a camera like this it's pretty unlikely that anyone will actually use the TIFF option (that said if it weren't there we'd see plenty of complaining...) Dropping down to JPEG STANDARD does introduce some JPEG artifacts although I think you would be hard pressed to see them in a print.

Digital Effects Control (Image Processing)

The DiMAGE F100 provides control over four different parameters of its image processing engine. The first, color mode controls the type of colour output: normal, vivid, B&W. More familiar are Sharpness, Contrast and Saturation each of which can be programmed to either less (-), Normal (0) or More (+). Kudos to Minolta for providing control over these parameters, however I would like to have seen a wider range of adjustment on each, the current +/- don't have enough effect to be very useful.

Digital Effects Control: Color mode

Normal Vivid B&W

Digital Effects Control: Contrast

Contrast - Normal Contrast +

Digital Effects Control: Saturation

Saturation - Normal Saturation +

Digital Effects Control: Sharpness

Sharpness -
Normal
Sharpness +