Moon Processing Workflow, preprocessing

[Fly_Boy]

There is a tutorial on Moon Processing Workflow: 

 At the beginning of the tutorial, he says that he preprocessed the raw images and saved them as tiff files.  Was this simply a format conversion, or was additional editing done before saving the tiff file?

[NotMyFault]

8 hours ago, Fly_Boy said:

Was this simply a format conversion, or was additional editing done before saving the tiff file?

Something in between.

If you stack RAW images, Affinity uses a simplified RAW processing with default parameters for everything, omitting certain steps.

It is not documented e.g. if lens correction is applied.

For best image quality, I recommend to use the native Camera vendor app for RAW conversion, they typically allow better batch processing including consistent recipes for multiple images, and do all steps like lens correction, white balance, adhering to „picture profiles“ set in Camera, process „dust delete data“ and healing of pixel defects (always bright pixels). One possible deal breaker is CA and diffraction correction which is very poor in Affinity compared to e.g. Canon DPP. Some lenses produce lots of magenta/green fringes.

This issue becomes harder since all Camera vendors rely heavily on „computational photography“ and accept formerly rejected lenses and sensors and rely on corrections in RAW developer. Manufacturers know all parameters of their lenses, whereas Affinity relies on LensFun DB which uses far less data points and typically don’t offer the same level and quality of defect correction.

 If you are more in a hurry and your intent are more on the creative side than scientific or documentary, you can directly stack RAW images.

[Fly_Boy]

Excellent explanation.  Thank you for the quick response.