[radarhere]

I find Image.point()'s mode parameter to be a bit odd. It is intended to default to the same mode as the image.

Pillow/src/PIL/Image.py

Line 2050 in b8865b5

:param mode: Output mode (default is same as input). This can only be used if

So where does that default setting apply? Partly in _point_impl

Pillow/src/_imaging.c

Lines 1769 to 1776 in b8865b5

	if (mode) {
	bands = getbands(mode);
	if (bands < 0) {
	return NULL;
	}
	} else {
	bands = self->image->bands;
	}

and partly in ImagingPoint().

Pillow/src/libImaging/Point.c

Lines 179 to 181 in b8865b5

	if (mode == IMAGING_MODE_UNKNOWN) {
	mode = imIn->mode;
	}

I think it would be simpler to set it in _point_impl, immediately after parsing the mode parameter.