Test your basic knowledge |

Certified Professional Photographer

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. A lens with a very wide angle of view and produces barrel distortion is what kind of lens?
a sensor (or film's) sensitivity to light
3200 Kelvin
Fisheye
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.

2. What two controls adjust the amount of light that reaches the sensor?
dynamic range (not to be confused with gamut)
The distance between the lens rear nodal point and the focal plane when the lens is focused at infinity.
Aperture and shutter
1 or 2

3. A lens set at f/4 admits how much more/less light than one set at f/2.8?
Half as much light
Close-ups that are life-size or larger. Images through microscopes are "photomicrographs."
The sensor's sensitivity to light
In the middle

4. What is focal length - technically?
The distance between the lens rear nodal point and the focal plane when the lens is focused at infinity.
dynamic range (not to be confused with gamut)
Metadata fields that hold info on photographer - subject - and use.
Levels adjustment

5. Most inkjet printers intended for photographic printing include light and dark inks of all of the colors except for one. Which color ink is usually available only in one density?
Yellow
Inkjet black & white printing where color cartridges are replaced with shades of gray - resulting in smooth tones and slight color cast
8 stops
Flat lighting

6. The rule of thirds necessitates that the composition be divided into a grid of now many equal rectangles or squares?
9
Along the lines of an imaginary grid at intersecting points that divide the image into thirds horizontally and vertically
Yellow
Variations command

7. A magic wand tool is used for what?
four times more
Selecting portions of the image based on color
Click with the neutral-point dropper on the selected color
a sensor (or film's) sensitivity to light

8. As the aperture is stopped down - what happens to sharpness?
Maybe as little as 0.5 degrees or 1 degree
More of the background and foreground are sharp.
four times more
Zoom lens

9. What angle should a polarizing filter be to the sun for best results?
The amount of information contained in each pixel
Relative aperture. The opening on a long lens must be larger than a corresponding opening on a short lens to produce the same f-stops.
90 degrees. If using to eliminate reflections - it should be used at 35 degrees.
Half as much light

10. In the 20th century - black & white photographers used the Zone system to tame excessive contrast. Now - digital photographers use what?
256
High Dynamic Range
four times more
A raster image

11. A 1:1 lighting ratio produces what lighting result?
Follow focus
Selecting portions of the image based on color
Flat lighting
An 8-BIT sequence that represents 256 possibilities - black & white & 254 shades of grey. The size of a file is the number of bytes it contains.

12. If an image is too green - what color adjustment should be made in Photoshop to correct it?
Short lighting.
flat - low contrast light
Relative aperture. The opening on a long lens must be larger than a corresponding opening on a short lens to produce the same f-stops.
Add magenta

13. A histogram shows what in an image?
The brightness of all the pixels in an image
Luminance is light reflected from the subject (measured by a reflected-light meter) - while Illuminance is light falling on a subject (as measured with an incident light meter)
It emphasizes the edges between tones. A threshold of zero affects all pixels - a higher threshold affects just the edges with high tonal difference and minimizes noise.
A high contrast image

14. If your print will be viewed mostly under window light - what is the suggested Kelvin temperature of the lights you should use to evaluate your print?
Luminance is light reflected from the subject (measured by a reflected-light meter) - while Illuminance is light falling on a subject (as measured with an incident light meter)
5000K
The brightness of all the pixels in an image
Hue - Luminance - Saturation

15. What color is opposite Red on the color wheel?
Cyan
The sensor's sensitivity to light
(X times Y = exposure) Intensity (aperture) x Time (shutter)
Half as much light

16. What do the bars on the right of a histogram represent?
Aperture and shutter
stopped down
White (255)
The brightness of all the pixels in an image

17. An incident-exposure reading for a fair-skinned subject reads f/8 - 1/125th at 100 ISO. The next subject is very dark skinned. What is the proper exposure for the second subject?

18. When mixed in varying proportion - the subtractive primary colors produce what?
Short lighting.
All colors
Cyan
Add blue

19. Digital cameras use what set of primary colors?
Additive (R - G - B)
No
Small light source at an angle to the subject
A new layer

20. What is the usable exposure range - or range of subject brightness called?
Dynamic range
Yellow
All colors
Variations command

21. If you must move to reduce the amount of flash reaching your subject - how far do you move?
aperture diameter
Blue
To create a 1-stop difference - multiply the original distance by 1.4. Example - if you were originally 5 feet away - a 1-stop difference would have you step back to 7 feet.
Total number of pixels

22. The amount of motion blur in an image will increase if you do what?
lengthen (or slow) the shutter speed
Zoom lens
Hue - Luminance - Saturation
Broad lighting

23. This type of file format compresses images by discarding pixels; therefore - each time an images is compressed - it loses pixels.
Because you can move in close to the subject
Bit
JPEG
The sensor's sensitivity to light

24. To emphasize texture in a portrait - what kind of light source is recommended?
Contrast
Use positive exposure compensation (overexposure). A reflected meter reading will attempt to make the scene 18% gray - employ overexposure to adjust.
Small light source at an angle to the subject
Infinity

25. What Photoshop tool allows you to select an area of any size or shape by drawing freehand?
bend toward each other and converge at the focal point.
Follow focus
Lasso tool
5 -000 Kelvin

26. What is a Bit?
Incident light meter
Snoot
Follow focus
The smallest unit of information consisting of either a 1 or a zero. It can only represent two possibilities - either yes or no - black or white.

27. A tall vertical line on the right hand edge of a histogram indicates what?
Blown highlights
More of the background and foreground are sharp.
Inkjet black & white printing where color cartridges are replaced with shades of gray - resulting in smooth tones and slight color cast
Selecting portions of the image based on color

28. Why does a short lens create wide-angle distortion?
Contrast
Butterfly lighting
Along the lines of an imaginary grid at intersecting points that divide the image into thirds horizontally and vertically
Because you can move in close to the subject

29. What is the optical resolution on a scanner defined as?
The pixels per inch a scanner is capable of capturing often described as two numbers (i.e. 1200x2400)
Keeps a moving subject sharp while blurring the background
Lower
Fisheye

30. According to the rule of thirds - where should the important parts of an image fall?
A change in illumination
Creates deep shadows in eye pockets - under nose - and chin.
RAID system
Along the lines of an imaginary grid at intersecting points that divide the image into thirds horizontally and vertically

31. Tungsten is approximately what color temperature?
Close-ups that are life-size or larger. Images through microscopes are "photomicrographs."
A new layer
On a scanner; it guesses what the pixels look like in between the ones the scanner can actually measure.
3200 Kelvin

32. Perspective is affected by what?
The number of pixels per unit of length in a image
Use negative exposure compensation (underexpose). The meter will attempt to make the dark scene 18% grey - underexpose to bring it back to dark.
Change the shutter speed. The longer the shutter speed - the lighter the background will be. The faster the shutter speed - the darker the background will be because less existing light is captured.
lens-to-subject distance

33. What does ISO stand for?
The number of pixels per unit of length in a image
9
International Organization for Standardization
Reflected light meter

34. A filter with a factor of 2 requires how many stops of compensation?

35. The smallest unit of digital information is called a what?
Cyan
The number of pixels per unit of length in a image
Snoot
Bit

36. 8 bits per pixel gives you how many colors?
256
Depth of field
Short lighting
Aperture-Priority

37. Bit depth refers to what?
Memory card / flash card / compact flash card
Maybe as little as 0.5 degrees or 1 degree
The amount of light reflected back from the subject during exposure.
The amount of information contained in each pixel

38. What is a thyristor?
Levels adjustment
The sensor's sensitivity to light
A light-sensitive cell or sensor inside a flash unit that measures the amount of light reflecting off a subject when a flash is used.
stopped down

39. What angle of view does a reflected light meter read?
The pixels per inch a scanner is capable of capturing often described as two numbers (i.e. 1200x2400)
Similar to a normal lens at about 30 degrees
Depth of field
Flat lighting

40. A tonal correction cannot be accomplished by using a...
hue/saturation adjustment layer
Black. Subtractive primaries are Magenta - Yellow - Cyan
The smallest unit of information consisting of either a 1 or a zero. It can only represent two possibilities - either yes or no - black or white.
Absorbs equal quantities of all wavelengths of light. It allows you to use wider apertures or slower shutter speeds without changing color balance.

41. The term "ISO speed" is used to describe what?

42. What is the inverse square law?
The amount of light reflected back from the subject during exposure.
To strike the side of the face away from the camera.
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.
Total number of pixels

43. What does the term "stop" mean?
3200 Kelvin
A new layer
An 8-BIT sequence that represents 256 possibilities - black & white & 254 shades of grey. The size of a file is the number of bytes it contains.
A change in illumination

44. Printers use what set of colors?
Subtractive primaries (plus black)
a sensor (or film's) sensitivity to light
Reciprocal relationship
JPEG

45. This type of backup system is fault-tolerant because it creates redundant data.
Depth of field
RAID system
Keeps a moving subject sharp while blurring the background
Levels adjustment

46. An image made of pixels is sometimes called what?
Contrast
Bit
Reflected light meter
A raster image

47. The histogram of a properly exposed grey card will show a vertical bar where on the histogram?
Convex
In the middle
More of the background and foreground are sharp.
factor of 2 = 1 stop compensation. (Each time a factor doubles - it's one additional stop)

48. What is a derivative file?
9
A RAW file that has been altered
One stop less
Change the shutter speed. The longer the shutter speed - the lighter the background will be. The faster the shutter speed - the darker the background will be because less existing light is captured.

49. An 8x10 at 240 dpi will have a resolution of what?
Fisheye
1920 pixels by 2400 pixels (4.6 million pixels)
The number of pixels per unit of length in a image
Use negative exposure compensation (underexpose). The meter will attempt to make the dark scene 18% grey - underexpose to bring it back to dark.

50. What light source has the highest color temperature?
Variations command
Direct sun at 11 -000 Kelvin
The sensor that converts the image from analog to digital (1's and 0's) CCD=charge coupled device; CMOS=complementary metal-oxide semiconductor
Keeps a moving subject sharp while blurring the background