the way i see it is no matter what is done with a camera, it is manipulating whatever scene is in front of it.
slow exposures manipulate time just like instant exposures of a millisecond do the same. ( i won't even go into filters .. )
developing the film and converting it into a negative manipulates the scene even more, soft invisible grain, hard grain reticulation
( i won't go into intensification or negative retouching either )
then printing it ... chemistry paper, hands on the print, ice in the bath, hair dryer, water bath, burning, dodging, wide open lens, stopped down, obstructions,
graphite dust on the print, abrading it with a knife ... inks, oils bleaches paints ...
there really is no such thing as an unmanipulated straight print ...