Image parameters

The 7D features a nice range of image parameter adjustment (referred to in the 7D menu as 'Digital FX') with five levels for each of contrast, saturation, sharpness and hue. These can be used in combination with any of the three color space options (described on the previous page). A nice feature may have been the ability to memorize combinations of settings into parameter sets.

Image parameter adjustments

  • Contrast: -2, -1, 0, +1, +2
  • Saturation: -2, -1, 0, +1, +2
  • Sharpness: -2, -1, 0, +1, +2
  • Hue: -2, -1, 0, +1, +2

Contrast adjustment

Adjusting the tone alters the shape of the 'S curve' used to map the linear image data captured by the sensor into the correct gamma. A lower contrast setting maintains more of the original data's dynamic range but leads to a flatter looking image. A higher contrast setting stretches the grayscale (dark to light) of the image and could lead to clipping of both shadow detail and highlights.

  Contrast Luminosity histogram



Color saturation adjustment

Saturation adjustment allows you to control the strength of color in the final image. We did find that the 7D's default saturation setting is quite strong and can occasionally lead to clipping (where one of the color channels reaches maximum (255) and loses detail). A setting of -1 generally avoided this.

  Saturation 100% crop

Color hue adjustment

The Hue adjustment allows you to make subtle hue shift adjustments to the image before it is saved. A negative adjustment shifts reds towards purple (more blue), a positive adjustment shifts reds towards orange (more yellow).

  Hue 100% crop


The 7D's default sharpening is fairly mild but does help to avoid halo type sharpening artifacts, if you prefer your images sharper out of the camera the +1 setting can work fairly well (although the optimum sharpness / detail can only achieved with RAW).

Sharpness: -2
Sharpness: 0 (default)
Sharpness: +2