FIC Week 3 Flashcards
What are the three types of evidence?
Testimonial
Documentary
Physical
What is Locard’s Exchange Principal?
When any object or person comes into contact with an object or another person, a cross-transfer of physical evidence occurs
Four responsibilities from time of collection until court:
1) Identify each piece of evidence
2) Describe exactly where it was found
3) Prove continuity
4) Describe the changes in the evidence
• physical damage due to storage
• spillage/evaporation
• change in physical appearance
Good sources for DNA:
Blood
Saliva
Hair Root
Tooth Pulp
Bone Marrow
Skin cells/muscles
Semen
Nasal secretions
What is photography linkage?
Links your photographs one to the other by using a common object which is present between one photograph and the one that follows it.
Flash techniques for night photography
• Synchronized flash at the camera
• Flash with slow sync
• Flash with rear sync
• Multiple flashes at the camera
• Multiple flashes away from camera
Two flash techniques for objects like beer bottles?
Feathered flash
Bounce flash
Techniques for reducing shadows include;
• A black background (when appropriate) will help to reduce
shadows. RAISE THE OBJECT OFF THE SURFACE
• Use a light table
• Light diffusion can also reduce the harshness of any shadows
Photography techniques to reduce glare
• Light diffusion
• Tenting
• Proper angle of illumination
• Reduce the intensity of the light
3 important factors in fingerprint photography
• Proper exposure and illumination
• Sharp focus (depth of field)
• Fill the frame for maximum resolution
What is required for closeup fingerprint photography
developed fingerprint, scale, circle and markings.