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Compared to...

Studio scene comparison (RAW)

For a (more) level playing field for comparison we also shot our studio scene in RAW mode with each camera and converted it using Adobe Camera RAW (version 5.4 in this case). Because Adobe Camera RAW applies different levels of sharpening to different cameras (this confirmed) we had to use the following workflow for these conversions:

  • Load RAW file into Adobe Camera RAW (Auto mode disabled)
  • Set Sharpness to 0 (all other settings default)
  • Open file to Photoshop
  • Apply a Unsharp mask: 80%, Radius 1.0, Threshold 0
  • Save as a TIFF (for cropping) and as a JPEG quality 11 for download

This is our standard studio scene comparison shot taken from exactly the same tripod position. Lighting: daylight simulation, >98% CRI. Crops are 100%. Ambient temperature was approximately 22°C (~72°F). Camera settings as per previous pages.

Pentax K-7 vs. Pentax K20D

Pentax K-7 (RAW)
Pentax K20D (RAW)
4.0MB JPEG (4672 x 3104)
4.0 MB (4672 x 3104)

Shooting in RAW format and processing with Adobe ACR 5.4 squeezes some extra detail out of both cameras' output. Using the 'equalized' ACR processing and considering the K-7 and K20D are being built around a very similar sensor it does not come as a surprise that there is not much discernible difference in terms of detail. Again, the colors are very similar too. If you're currently a K20D user, from a picture quality at base ISO point of view there is certainly no need to upgrade to the K-7.

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