and a mask refinement which can add feathering, bluring, contrast and reduce opacity. The masking functions are very powerful, there are many options:ĭrawn masks can be circles, elipses, paths (similar to lasoo selections), brush or gradients and these have hardness and opacity properties.Įach of the mask types can be modified with blend modes such as multiply, divide, addition etc.

In Darktable, multiple instances of exposure are usēd to mimic the 'dodge and burn' effect brought to digital image processing from the film darkroom or the effect of an on camera graduated ND filter.

at least some name-dropping of key technical terms / concepts / approaches for darktable / gimp / lightroom / photoshop. What are the standard ways of increasing the exposure of a face without changing the background's exposure? I'm a beginner in the field and need guidance. I can't seem to find any useful, authoritative tutorials etc on this yet (apart from proprietory non-Linux ) I guess one approach would involve drawing a 'mask' over the subject's face (and body), but I'm just guessing around, feeling like an amateur photographer trying to fly a jumbo jet with all the knobs and buttons. dark/unchanged, not black - though that would be a bonus exercise). However, I'd like only the exposure of the subject's face (and hair strands, arms, body) to be corrected - not the background which I'd prefer to leave in the dark (i.e. In my first go at darktable I managed to properly expose the whole photo within 2 seconds with the 'exposure' module. Shot a portrait with flash + umbrella (indoors at night, some artifial ambient light) - but it's underexposed.

How to use darktable with gimp