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Sony A7s vs Sony A7R: ISO and Noise

Get Sony A7 cameras at B&H Photo.

Sony Alpha A7s

This elaborate real-world evaluation of noise includes:

  • HD and UltraHD entire-frame images ISO 100 to ISO 410K in RGB comparing the Sony A7s to A7R, matched accordingly.
  • HD and UltraHD entire-frame images ISO 100 to ISO 410K in grayscale gamma 2.2 comparing the Sony A7s to A7R.
  • Two large actual pixels crops from the Sony A7s, ISO 100 to 410K showing RGB, gray gamma 2.2, and individual red/green/blue color channels from ProPhotoRGB.

In my review of the Sony A7s:

ISO 100 to 410K (Decorated Bike, Natural Light)

The appearance of noise depends on the character along with its magnitude, and especially the degree of enlargement. Discussion on this topic is included.

Sony A7s and Sony A7R ISO noise evaluation from ISO 100 to ISO 410K in RGB and grayscale
Sony A7s noise evaluation from ISO 100 to ISO 410K for RGB, red/green/blue channels, gray gamma 2.2

World of Sigma and especially Sigma ART Lenses
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