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Chapter 11 Digital Photography

Below are the questions and indicative answers to Covert Surveillance Theory by each chapter.


If you are taking the assessments for the Level 4 NQF qualifications in surveillance, you are advised not to copy and paste these answers into your workbook. It will be easily noticed if you do, and you will be struck off for plagiarism.


Only the indicative content is included, not the complete answers, therefore you will have to answer your questions in full to level 4 standard.


Chapter 11 Questions – Unit 9 Digital Photography


1. Identify and explain the functions of the shutter release button.


  • Focus

  • Exposure

  • Shutter

  • Meter reading


2. Explain the purpose of each of the following exposure modes of a DSLR camera.

  • Manual

  • Shutter Priority

  • Aperture Priority

  • Program

  • Auto

3. Identify which five factors or elements produce a photographic image.

  • Ambient light

  • Objective lens

  • Aperture

  • Shutter

  • Sensor

  • Artificial light

4. Explain the elements of the ‘Exposure Triangle’.

  • Shutter speed

  • Aperture

  • ISO

5. When taking a photograph of a subject that has bright sun behind them or is stood in front of a bright window, explain how you would expect this subject to appear when using Evaluative Metering?

  • Dark

  • Bright

  • Silhouette

6. When taking a photograph of a subject that has bright sun behind them or is stood in front of a bright window, explain three adjustments or settings that could be used order to improve subject exposure.

  • EV meter

  • Over-expose

  • Spot metering

  • Flash

7. Identify the missing aperture settings (X & Y) in this conventional sequence.


  • 1.4   2.8   4.5   5.6   8   11   16   22


8. You wish to photograph a person with the background out of focus to prevent distractions in the image. What ideal focal length and aperture would you consider? Explain/ justify your decision.

  • Focal length

  • Aperture

  • Perspective

9. Explain why a 28-135mm zoom lens has an aperture range of f3.5-f5.6.

  • Widest

  • Narrowest

  • Inverse

  • Variable

10. You have a 250mm lens fitted to your camera and you are shooting without a support. Explain what ‘ideal’ shutter speed you would use and why.

  • Focal length

  • Shutter Speed

  • Reciprocity Rule

  • Stabilisation

11. You wish to photograph a subject (hand-held) with a shutter speed of 1/400th using a 400mm lens. In Manual mode, you have set this shutter speed and your aperture is set to its widest of f2.8 to let in as much light as possible but your images are coming out dark. Explain how you would rectify this.

  • Over expose

  • ISO

  • Shutter speed


12. Explain the advantages of using a lens with Image Stabilisation (IS).

  • Stops of stabilisation

  • Blurred images

  • Camera shake

  • Moving subjects

13. Explain three adjustments that can be made in order to manipulate the appearance of an image.

  • Brightness/contrast

  • Noise reduction

  • Shadows

  • Highlights

  • Whites

  • Blacks

  • Sharpen

  • Levels

14. Explain the advantages and disadvantages of shooing on RAW mode to that of JPEG.

  • RAW

  • JPEG

  • Latitude

  • Image processing

  • File size

  • Integrity

15. Explain the different ways of re-sizing images to make the smaller data files.

  • Physical size

  • Compression

  • Quality

  • Monochrome

  • Cropping

  • Pixels

End of chapter questions

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