The ice age is when sculptures and cave paintings were developed
Modern DSLR cameras use the Phase Detect autofocus method to determine the correct point at which to focus the lens. This method is fast and generally accurate, and operated by light travelling through the lens. When you half-press the shutter button on your DSLR while looking through the optical viewfinder, it’s Phase Detect autofocus that’s used.
1,2, and 3 point perspective, very useful.
Churches greatly effected the size and subject matter of artwork. This is because many large structures created more room to put larger artwork in. This includes murals, which have become very common in churches and historical large buildings. Much of the artwork in these buildings show historical events and religious beliefs.