Visualization of image distortions:

image distortion: sensor noise (σ=5)
sensor noise (σ=5)
image distortion: sensor noise (σ=10)
sensor noise (σ=10)
image distortion: sensor noise (σ=15)
sensor noise (σ=15)
image distortion: sensor noise (σ=20)
sensor noise (σ=20)
image distortion: sensor noise (σ=30)
sensor noise (σ=30)
image distortion: sensor noise (σ=50)
sensor noise (σ=50)
image distortion: sensor noise (σ=100)
sensor noise (σ=100)