5 Written questions
5 Matching questions
- Convex lenses cause light rays to do what?
- In the 20th century, black & white photographers used the Zone system to tame excessive contrast. Now, digital photographers use what?
- An SLR camera uses what to allow you to see exactly what you'll photograph?
- What are luminance and illuminance?
- Most lenses are sharpest closed down to how many stops from the widest?
- a Luminance is light reflected from the subject surface (measured by a reflected-light meter), while Illuminance is light falling on a subject surface (as measured with an incident light meter)
- b High Dynamic Range
- c A mirror and pentaprism
- d 1 or 2, depending on the lens, could be 2 to 3.
- e bend toward each other and converge at the focal point.
5 Multiple choice questions
- Blue & Green
- The intensity of the illumination is inversely proportional to the square of the distance from light to subject. At twice the distance from the subject, the light illuminates only 1/4 of the original.
- Add magenta
- Total number of pixels
5 True/False questions
An 8x10 at 240 ppi will have a resolution of what? → The size of the opening in the lens which controls the amount of light reaching the sensor.
What does the term "stop" mean? → Flattens out the volume of the subject and minimizes textures
Using this kind of automatic exposure setting on the camera, you set the aperture and the camera sets the shutter speed → Shutter-Priority
What is focal length, technically? → The distance between the lens rear nodal point and the focal plane when the lens is focused at infinity.
The useable exposure range of a sensor, or the range of subject brightness is called what? → dynamic range (not to be confused with gamut)