JPEG/TIFF Image Size & Quality

The QV-4000 provides five image size options; 2240 x 1680, 2256 x 1504 (3:2 picture ratio), 1600 x 1200, 1280 x 960 and 640 x 480 which can be used in combination with three JPEG quality settings or uncompressed TIFF.

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:

• 2240 x 1680 TIFF
• 2240 x 1680 Fine
• 2240 x 1680 Normal
• 2240 x 1680 Economy
• 1600 x 1200 Fine
• 1280 x 960 Fine
• 640 x 480 Fine

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

	2240 x 1680
TIFF	11,028 KB (not available for download)
Fine JPEG	1,410 KB
Norm. JPEG	951 KB
Econ. JPEG	600 KB
	1600 x 1200
Fine JPEG	748 KB
	1280 x 960
Fine JPEG	497 KB
	640 x 480
Fine JPEG	146 KB

Very little difference between Fine JPEG and TIFF means that for most people the 1.5 MB Fine JPEG will provide 'almost TIFF quality' for those especially important shots. After this Normal JPEG provides a relatively clean and artifact free general shooting quality. I was a little disappointed with the unsophisticated downsampling at 640 x 480 (it looks like nearest neighbour).