Channels and filters
Answers are for parents and teachers.
1
What does Invert change the value 130 into?
125
2
In a 3×3 blur the 9 values are 5, 15, 25, 35, 45, 55, 65, 75, 85. What is the centre's new value?
45
3
How many bytes does each channel of a 1000×800 RGB picture take (8-bit)?
800000
4
What do you do first to apply a filter to only part of a picture?
Select that part (Marquee, Lasso, Magic Wand).
5
What must be done before sharing a picture where someone's face was changed with a filter?
Get their permission and say openly that the picture was altered.