Level 1: Images opacity level 0.1 (filter:alpha(opacity=10)

Flower
Flower
Flower
Flower

Level 2: Images opacity level 0.3 (filter:alpha(opacity=30)

Flower
Flower
Flower
Flower

Level 3: Images opacity level 0.6 (filter:alpha(opacity=60)

Flower
Flower
Flower
Flower

Level 4: Images opacity level 0.8 (filter:alpha(opacity=80)

Flower
Flower
Flower
Flower