Band of slightly darker pixels along one border of raw image

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That was me over at dpreview, just with a different hat on…

I’m working on a proper fix to this problem. So far I have this in my luarc: the RAW crop is applied only when necessary:

local dt = require "darktable"
local df = require "lib/dtutils.file"

local SEP = dt.configuration.runnin_os == "windows" and "\\" or "/"

local function shading_compensation_on(image)
    local exiv2 = df.check_if_bin_exists("exiv2")
    if not exiv2 then
        dt.print(_("Unable to find exiv2 command."))
        return false
    end

    local p = io.popen(exiv2
        .." -K Exif.OlympusCs.ShadingCompensation "
        ..image.path..SEP..image.filename)
    if not p then return false end

    local line = p:read("*l")
    p:close()
    return line and line:find("On", 1, true) ~= nil
end

local function crop_right_border_on_import(event, clean, image)
    if not clean then return end
    if image.exif_maker ~= "OLYMPUS CORPORATION" or image.exif_model ~= "E-M5MarkIII" then
        return
    end
    if shading_compensation_on(image) then
        dt.gui.action("iop/rawprepare/crop right", "value", "set", 32)
    end
end

dt.register_event("em5_iii_crop", "darkroom-image-loaded", crop_right_border_on_import)

For the above to work, plugins/darkroom/rawprepare/allow_editing_crop must be set to true in darktablerc.

If people see this effect with different camera models, could they please post their names here?

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