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JPEG Image Size & Quality


Standard Test Scene

The HP 935 provides two image size options (2608 x 1952 and 1296 x 976) and three levels of JPEG compression which are indicated by a number of stars (where three stars is least compression best quality, one star is most compression lowest quality). Note that the 935 doesn't have a TIFF or RAW uncompressed option.

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:

  • 2608 x 1952 JPEG
  • 2608 x 1952 JPEG
  • 2608 x 1952 JPEG
  • 1296 x 976 JPEG
  • 1296 x 976 JPEG
  • 1296 x 976 JPEG

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


 
2608 x 1952

JPEG

2,564 KB

JPEG

1,299 KB

JPEG

703 KB
 

 
1296 x 976

JPEG

1,087 KB

JPEG

588 KB

JPEG

422 KB

As we noted with the advent of the HP 850 it appears as though HP have worked to address some of the compression and artifact problems which we noted in our HP 812 review. At the setting there are almost no visible artifacts and only a few appear at the higher compression mode. That said I do feel that HP can improve further, certainly their down-sampling interpolation algorithm could do with a little work (1296 x 976 images can look a bit jagged).


Image Parameters

The 935 provides decent control of contrast, saturation and sharpness, although only plus or minus one level. These settings can be combined and if not normal (the middle setting) are indicated on the live view by an icon. Unlike some other settings these are memorized at power off.

Contrast and Saturation

Contrast -1 Contrast 0 Contrast +1
Saturation -1 Saturation 0 Saturation +1

Sharpness

Sharpness -1
Sharpness 0
Sharpness +1
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