Final Exam Questions

1.     What is the difference between a reflex camera FX or DX?

The DX-format is the smaller sensor at 24x16mm; the larger FX-format sensor measures 36x24mm which is approximately the same size as 35mm film. a FX sensor means there's more physical real-estate thus allowing you to cram more pixels into the sensor. This means you can print larger images because you have a higher resolution. The FX sensor, with more "light gathering" area, offers higher sensitivity and, generally, lower noise. The DX sensor makes possible the production of lighter, smaller cameras, but because it covers a smaller portion of the image projected by the lens,

2. How can you calculate the length of the normal focal length in a digital or film camera?

They vary, but you can read it off the lens, or use the lens formula.

3. What does normal focal length mean?

The focal length of the lens is the distance between the lens and the image sensor when the subject is in focus, usually stated in millimeters The typical length of a lens is 50mm.

4. Which is the normal focal length in a DX camera or in an FX camera?

Fx 35mm Dx 24mm

5. What is a wide angle lens?

A camera lens having a wider than normal angle of view (and usually a short focal length); produces an image that is foreshortened in the center and increasingly distorted in the periphery

6. What is a telephoto lens?

A lens with a longer focal length than standard, giving a narrow field of view and a magnified image.

7. What is a zoom lens?

A lens allowing a camera to change smoothly from a long shot to a close-up or vice versa by varying the focal length.

8. Is your lens on your camera a prime lens or zoom lens?

A zoom lens

9. Which is the maximum aperture available on your lens in the wide angle setting?

f4

10. Which is the maximum aperture available on your lens in the telephoto setting?

f1/5.6

11. Which are the "best" aperture to exploit the maximum quality of the lens?

f1/8

12. What is the diaphragm that allows the most shallow depth of field?

f2.8

13. What is the diaphragm that allows the deepest depth of field?

F/22 will have a deep depth of field.

14. What are the kelvin degrees?

Kelvin is a scale for measuring temperature. In photography, the particular color seen at a specific temperature is the color temperature. When purchasing photographic strobe equipment and film, the color of light from the flash is rated a certain degree and is designed to imitate light during a certain time of day.

15. How can you calculate the exposure of a subject with or without the light meter?

With the light meter, point the meter at the scene and set the aperture and shutter speed as indicated. -Without the light meter, on a middle tone subject on a bright sunny day; Exposure=100/ISO at f/16. -Aperature can be set based on these rules:

▪ Bright sunny day - f 16

▪ Heavy overcast - f 8

▪ Sunset/thick shade - f 4

▪ Brightly lit indoors with some window light - f 2 (e.g. on the bus)

▪ Brightly lit indoors, no windows (or nighttime) - f 1

16. How can you calculate the exposure of a subject with a strong light behind him?

Based on the sunny 16 rule, one can estimate correct daylight exposures without a light meter. The rule is: “On a sunny day set aperture to f/16 and shutter speed to the reciprocal of the ISO film speed for a subject in direct sunlight. -Some cameras have built-in meters and have an exposure-hold button or switch to lock the exposure setting at the reading of the medium-tone.

17. What is the difference between RAW, JPEG, or TIF file?

JPEG – JPEG files are processed right within the camera. How exactly they are processed varies from model to model. While color temperature and exposure are set based on your camera settings when the image is shot, the camera will also process the image to add blacks, contrast, brightness, noise reduction, sharpening (which you can see in the example above) and then render the file to a compressed JPEG. These files are finished and can be viewed and printed immediately after shot.

RAW – RAW files are uncompressed and unprocessed snapshots of all of the detail available to the camera sensor. Because RAW files are unprocessed, they come out looking flat and dark. RAW images need to be viewed and processed using your camera’s software or in more robust commonly used software like Adobe Photoshop, Lightroom, Aperture, etc prior to being ready for display or print.

TIFF - TIFF files can be saved without compression, or they can be compressed to lower file size, similar to JPG files. TIFF files are commonly used in print design and desktop publishing because they can store large, high quality images such as photos. Often, printers will prefer or require TIFF files over JPG images or other formats.

18. Does your camera have a RAW setting?

 Yes, my camera has a RAW setting.

19. What is the ISO sensitivity that you set on your camera in a low light?

 The ISO sensitivity that I set the camera to the highest ISO setting I have in darker situations. In my camera the highest setting is 1600 ISO.

20. What is the ISO you set on your camera in a really bright light?

 The ISO setting that I set my camera to in really bright situations is the lowest ISO setting, which is 100 ISO, in my camera.