Crime%20Scene%20Documentation - PowerPoint PPT Presentation

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Crime%20Scene%20Documentation

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Crime Scene Documentation 1.1 Explaining how to search, sketch, and record data from a crime scene. Equipment Used Cameras (digital and film) Different types of film ... – PowerPoint PPT presentation

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Title: Crime%20Scene%20Documentation


1
Crime Scene Documentation
  • 1.1 Explaining how to search, sketch, and record
    data from a crime scene.

2
Equipment Used
  • Cameras (digital and film)
  • Different types of film
  • Different lenses
  • Flashes
  • Filters
  • Tripod
  • Sketchpad
  • Graph paper
  • Measuring tape
  • Notepad

3
Crime Scene Documentation
  • Occurs during the second walk-through
  • Follows same path as first walk-through
  • These jobs can be shared if more than one CSI is
    present.

4
Note-taking at the Scene
  • Uses scientific observation
  • Make only factual observations.
  • Make no assumptions form no opinions.
  • blood spreading outward from underside of
    corpse vs. large, brownish-red fluid spreading
    outward from underside of corpse

5
Photographs
  • Take pics of everything BEFORE anything is
    touched or moved.
  • Even the corpse is not touched until it and the
    surrounding area have been photographed.
  • 3 types of photos taken
  • Overviews
  • Mid-views
  • Close-ups

6
Crime Scene Photographs
7
Overview Shots
  • The widest possible views of the entire scene
  • Views of ALL rooms with photos from each corner
    and overhead
  • Views of the outside of the building, including
    all entrances and exits
  • Views of the building in relation to other
    structures
  • Photos of any spectators at the scene (???)

8
Mid-range Photos
  • To show key pieces of evidence in their original
    context
  • Location in the room
  • Distance from other pieces of evidence

9
Close-ups
  • Individual pieces of evidence to show details and
    serial numbers
  • Second set of evidence pieces with a ruler for
    scale
  • Every photo is included in a photo log.

10
Photo Log Includes
  1. Photograph number
  2. Description of the object or scene in the
    photograph
  3. Location of object or scene
  4. Time and date of photo

11
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12
Sketches
  • Shows exact locations of evidence and how each
    piece relates to the rest of the scene
  • Includes details like
  • door heights,
  • room size,
  • distance from door to windows,
  • diameter of hole in wall above victims body
  • Angle measurements

13
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14
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15
Video
  • Captures entire scene and surrounding area
  • Next Evidence Collection
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