As promised, it's test time!

This column has explored in depth the role of aperture and shutter in determining proper exposure and the photographers ability to control that exposure by understanding tonal values and their placement on the proper zone.

This test is meant as a review and to highlight to the reader the important topics discussed. So, sharpen your pencils, take out all your notes, hunker down in a comfy chair and give it a go.

The answers, with explanation, will appear in the next column.

Q1: Describe the function of aperture in determining exposure.

Q2: Describe the function of shutter speed in determining exposure

Q3: A camera meter attempts to expose a metered object as

Q4: Assume the camera meter suggests an exposure of f/5.6 at 1/500s. You wish to overexpose the object by 2 stops. Provide three different exposure setting s(aperture and shutter) for doing so.

Q5: BY adjusting the aperture only, provide an exposure that underexposes by 1 stop a suggested exposure of f/8 at 1/60s.

Q6: By adjusting the shutter speed only, provide an exposure that underexposes by1 stop a suggested exposure f f/8 at 1/60s.

Q7:When metering a part of a scene, the camera meter reading shows f11 at 1/250, indicate the adjusted exposure (by adjusting the shutter speed ONLY) to give a proper exposure of that part of the scene on the specified “zone” (referring to the Zone System).

1. Zone V: f _______ at ________ of a second

2. Zone III: f _______ at ________ of a second

3. Zone VI: f _______ at ________ of a second

Q8: When metering a part of a scene, the camera meter reading shows f11 at 1/250, indicate the adjusted exposure (by adjusting the aperture ONLY) to give a proper exposure of that part of the scene in the specified “zone” (referring to the Zone System).

4. Zone V: f _______ at ________ of a second

5. Zone IV: f _______ at ________ of a second

6. Zone VI: f _______ at ________ of a second

Q9: Provide a brief explanation as to why an aperture of f/5.6 allows twice as much light as an aperture of f/8 to strike the film plane.

Q10: Provide a brief explanation as to why a shutter speed of 1/500s allows half as much light to hit the film plane as a shutter speed of 1/250s.

Q11: Explain why a 300/2.8 lens is physically larger than a 300/5.6 lens.

Q12: Explain why exposure settings of f/5.6 at 1/500s and f/4.0 at 1/1000s yields an equivalent exposure

Q13: Determine the amount of contrast (in stops of light) between the darkest object in a scene that meters at f/5.6 at 1/30s and the brightest object in a scene that meters at f/11 at 1/125s.

Q14: Metering an object in a scene yields a reading of f/16 at 1/125s. In order to place the object on Zone III what exposure would you use.

Q15: Why is there only 9 stops of light represented on the Zone System.