Excluding a sense of scale from your images will force the viewer to imagine it, and this can lead to fascinating interpretations. A close-up of patterns in a small rock may appear like an aerial photograph; ripples on a sandy beach look like a vast desert; a trickle in a river could be a towering waterfall cascading over cliffs. Clearly, your intention isn’t to fool anyone, but by removing a sense of scale from compositions, that’s what can happen, and it makes those images more interesting as they force viewers to take a closer look to fathom what’s going on – they challenge our sense of familiarity.