Post-Processing

Manual Post-Processing includes the following corrections and adjustments:

  • cropping and orientation
  • inversion of the optical density curves in the case of negatives
  • adjustment of the "orange mask" compensation in the case of colour negatives
  • expansion of the tonal ranges (histograms)
  • neutralization of the chromatic drifts possibly introduced by the tonal expansion
  • contrast, brightness and film gamma adjustment (proportional and non-linear adjustments)
  • saturation adjustment
  • possibly, very slight sharpening, with a radius of 1 pixel (depending on the type of film)
  • chromatic balancing

The complexity of this work depends on the type of scanned emulsion, Color or Black and White. For the same type of emulsion, the same manufacturer and the same commercial film reference, the color profiles can diverge strongly depending on the chemical treatment performed and aging of the film. Concretely, it is generally impossible to apply a correction profile previously established without having to manually readjust all the parameters. Unless satisfied with a very rough rendering, the use of automatic correction algorithms is illusory. In the particular case of certain color films, the manual retouching work can prove to be relatively time-consuming. This is why we apply two separate flat rates for "Color" and "Black and White" emulsions. Without pretending to perfection in terms of colorimetric rendering, we offer you by this optional service a quality work based on our experience of the image. Note that the settings we make preserve high lights and shadows regions.

Deliverable files: a colorimetric post-processing performed under FlexColor would allow the creation of a record of the obtained color profile (the set of color adjustments for FlexColor) in the history of settings encapsulated in the Hasselblad raw 3f file of the scanned image. Unfortunately, the image editing features available in FlexColor are not always sufficient to achieve the desired result. Some images require the use of more comprehensive editing tools, such as Photoshop. That's why we always deliver post-processed files in TIFF format (full resolution, 16-bits per color channel, sRGB destination color space).

If the post-processing option is ordered, the TIFF file containing the post-processed version of an image is added to the file containing its "raw scan" version.

Note: the post-processing service does not include any job specific to image restoration, such as digital noise reduction, grain reduction, vibrancy adjustment, colorization or other special effects, localized treatments, etc. In the particular case of color temperature errors, ie films whose color temperature does not correspond to the exposure to which they have been exposed, such as the case of a film for "tungsten" light exposed in "daylight", we will try to produce a "Black and White" result as suitable as possible, within the limits allowed by the film provided.