Cinematography

Question 0

What is a Codec?

Answer 0

A way of compressing down data to make it smaller

Question 1

What is Dynamic Range?

Answer 1

The range of values the camera can record before it starts clipping off the highlights and the shadows

Question 2

The definition of Chroma

Answer 2

Color

Question 3

The definition of Luma

Answer 3

Brightness

Question 4

What is bit depth?

Answer 4

The number of possible values you can represent in your color space or codec

Question 5

What is a bit number and what are the implications?

Answer 5

An Exponent.

2 to the 8th= 256 (8 bit)
2 to the 10th= 1024 (10 bit)

It’s not just a ratio.

Question 6

What are 2 principles we need to know about H.264 codec?

Answer 6

1) it likes bright things

2) it likes contrasts things

Question 7

What is the benefit of having a big sensor?

Answer 7

The camera’s sensor is what turns light into a digital image. The bigger the sensor, the more light is captured, thereby creating a better quality image.

Question 8

Which sensor is cheaper to make? CMOS or CCD?

Answer 8

CMOS

Question 9

These sensors are more mature and have been mass produced for a long period of time.

Answer 9

CCD

Question 10

How many samples does chroma sub-sampling have and what are they?

Answer 10

3.
They are:
1) 4:4:4
2) 4:2:2
3) 4:2:0

Question 11

Why does a CMOS sensor have lower light sensitivity then a CCD?

Answer 11

Because each pixel on a CMOS sensor has several transistors located next to it.