csi
what are the four key elements of crime scene documentation?
what is notes, photographs\video, sketches and reports
combines both "birds-eye" + elevation sketch. show the relationship of both vertical and horizontal planes.lay down the walls.
cross projection (exploded view sketch)
purpose of each type of crime scene photograph, which one should include the word "landmark"?
what is Evidence establishment
Road-mapping uses a variety of labels and scales in an effort to eliminate what?
what is To Eliminate confusion on the viewers part
The focus of objects in front of and beyond the subject of the photo.
what is depth of field
creating photographs where the viewer is lost in the scene or has no direction.
-Where in the scene is the object?
-Which way is up?
what is orientation issue (photography)
how wide the lens aperture opens, which then controls the amount of light that the film is exposed to
What is f-stop?
It is the basic info about who is taking the photo, the case number and address, etc; before you take photographs, you take picture of card.
what is a photo reference card
What is the most common mistake in close up/forensic quality photographs?
what is, failing to fill up the frame with the close-up
basic types of crime scene photographs
what is overall, evidence establishment, and close up\forensic quality
purpose of crime scene photography
photos support other scene documentation. graphically illustrate the condition of the scene as found
Is road-mapping intrusive? Why or why not?
Yes, you would do it late in the examination; highly intrusive; putting scale on surfaces of stain objects; never done first
understanding the use of manual camera lighting and physical control of the camera
what is what makes good photographs?
The narrative description must be -------, ------, and ---------.
detailed, accurate, understandable
Crime scene reports should not be _____________, ________________, or ______________.
subjective, incomplete, or based on assumptions (conclusory)
creating photographs where the viewer is lost in the scene.
-What is in this photo?
-Why was this photo taken?
what is, identification issue (photography)
why shouldn't Crime scene reports be subjective, incomplete, or based on assumptions? (or "conclusory")
The Requirement for Legal Admissibility and Credibility can subject the risk of wrongful conviction or acquittal
Team fails to capture pertinent scene details. Too few photographs taken
- Critical areas of the scene are forgotten.
● Methodical scene processing techniques help eliminate this issue.
what is incomplete documentation issue (photography)
along with blood pattern analysis, the road-mapping method of photographic documentation can be used for what 2 other types of analysis?
what is Bullet defects and trajectory
The most common mapping methods include:
what is, baseline coordinates, rectangular coordinates, triangulation
how does the f-stop affect the resulting photograph
what is, The higher the f-stop number is, the smaller the aperture, which lets in less light
3D sketches
what are, detailed, accurate measurements from the scene to create "virtual" scenes. creates a "walk-through."
5 essencial sketch elements
heading, diagram area, legend, title block, scale\direction notation
The standard crime scene sketch is a birds-eye view, but what are the 3 variations of view?
Cross-projection or exploded sketch, elevation sketch, three-dimensional sketch
What are the 6 most common mapping methods?
what is Rectangular coordinates, Triangulation, Baseline coordinates, Polar coordinates, Triangulation\rectangular coordinates on a grid, Triangulation on a baseline