妖しい
怪しい
3d
3d illustration
alertness
around
camera
cctv
concept
concepts
contour
control
crime
danger
design
deterrent
drawing
equipment
graphic
guard
illustration
ink
lens
line
looking
modern
optical
outdoors
outline
privacy
private
protection
record
residential
safety
secrecy
security
sign
silhouette
sketch
spectator
surveillance
suspicion
symbol
system
technology
television
video
warning
watching
wireframe