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JPEG/RAW Image Size & Quality

The Olympus C-5050 Zoom offers what is probably the widest range of image size and quality combinations of any digital camera, this is much in line with previous Olympus digital cameras. The actual implementation of these difference sizes and qualities can at first be a little confusing, essentially you can shoot TIFF at any image size, the full 2560 x 1920, 2560 x 1696 (3:2) and interpolated 3200 x 2400 are available in SHQ and HQ modes, the remaining six sizes are split between SQ1 and SQ2 with selectable JPEG quality (High / Normal). The table below summarizes these options.

  RAW TIFF JPEG High JPEG Normal
3200 x 2400 *     SHQ HQ
2560 x 1920 RAW TIFF SHQ HQ
2560 x 1696 (3:2)   TIFF SHQ HQ
2288 x 1712   TIFF SQ1 SQ1
2048 x 1536   TIFF SQ1 SQ1
1600 x 1200   TIFF SQ1 SQ1
1280 x 960   TIFF SQ2 SQ2
1024 x 768   TIFF SQ2 SQ2
640 x 480   TIFF SQ2 SQ2


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:

  • 2560 x 1920 RAW
  • 2560 x 1920 TIFF
  • 2560 x 1920 SHQ
  • 2560 x 1920 HQ
  • 3200 x 2400 SHQ (interpolated)
  • 2288 x 1712 SQ1 (FINE)
  • 1600 x 1200 SQ1 (FINE)
  • 1024 x 768 SQ2 (FINE)

Images below are cropped 240 x 100 area of the image magnified 200% (nearest neighbour). Shot at ISO 64, Aperture Priority F4.0.


 
2560 x 1920
RAW
7,290 KB Olympus RAW (.ORF) - not available for download
TIFF
14,422 KB TIFF - not available for download
SHQ
JPEG

3,171 KB
HQ
JPEG

1,076 KB
 

 
3200 x 2400 (interpolated)
Super
Fine
JPEG

3,176 KB
 

 
2288 x 1712
SQ1
JPEG
FINE

1,071 KB
 

 
1600 x 1200

SQ1
JPEG
FINE


466 KB
 

 
1024 x 768

SQ2
JPEG
FINE


214 KB

As noted above the C-5050 Zoom provides a very wide range of image sizes, although personally I think it would have been more straightforward to simply have two menu options, one for image size and one for quality (RAW, TIFF, JPEG High, JPEG Normal). The C-5050's JPEG compression algorithm appears to be of good quality, no visible artifacts, the 2560 x 1920 SHQ JPEG size is fairly large, it may have been nice to have a medium compression as well (something around 2 MB).

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