The crime scene : a visual guide


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Activity 1
Crime Scene Processing and Evidence Collection

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Format Paperback. Elsevier Science Publishing Co Inc. Online Not in stock. Sign up to receive our emails. For that reason, the photographers must understand ISO before using it. Shutter speed is the length of time when the film or digital sensor inside the camera is exposed to light. Object and image can be shown differently by shutter speed. Below are the examples.

These two photographs are taken under same situation except for camera shutter speed. In above situation, slow shutter speed makes image more clear and bright because the low shutter speed takes more light than high shutter speed. However, the high shutter speed often is necessary for moving object.

Above two photographs are taken under same situation except for camera shutter speed. In case of moving object, the low shutter speed is not proper to capture the object. It needs faster shutter speed to capture it. Shutter speed has pros and cons. For capturing a moving object, photographers must use a high shutter speed. However, the image can be very dark.

Low shutter speed must be used when capturing a clear image or object under the harsh condition, but it is hard to capture the moving objects. Aperture means that the extent of a sharpness of an image that is shown through the lens. So, it is one of really important things to photographers. High aperture High focus means hard sharpness like photograph1.

Every Low aperture low focus means soft sharpness. The photograph 1 shows all objects very clearly because of the high aperture. The photograph 2 image shows an object with right focus but rest of the objects are all blurred because of low aperture. External flash units are helpful tools when responding to a crime scene and for the proper documentation of evidence.


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The white balance of a photo flash unit is set to mimic daylight to ensure the proper color balance of the subject matter. The photographer must be mindful of the reflections that can occur due to the directionality of the flash and the position of the subject matter. To avoid flash reflections, as demonstrated below examples, the flash must either be removed from the camera body, creating an angle, or bounced off of the ceiling.

The tools required to properly document the crime scene include: [9]. The images must be clear and usually have scales. They serve to not only remind investigators of the scene, but also to provide a tangible image for the court to better enable them to understand what happened. The use of several views taken from different angles helps to minimise the problem of parallax. Overall images do not have scales and serve to show the general layout, such as the house where the murder is thought to have occurred.

Context images show evidence in context, like how the knife was next to the sofa. Close up images show fine detail of an artifact, such as a bloody fingerprint on the knife. Road traffic incident RTI photographs show the overall layout at the scene taken from many different angles, with close-ups of significant damage, or trace evidence such as tire marks at a traffic collision. As with crime scene photography, it is essential that the site is pristine and untouched as far as is possible. Some essential intervention, such as rescuing a trapped victim, must be recorded in the notes made at the time by the photographer, so that the authenticity of the photographs can be verified.

The Crime Scene, A Visual Guide by Marilyn T. Miller | | Booktopia

As with all evidence a chain of custody must be maintained for crime scene photographs. Regardless of how it is done any person who handles the evidence must be recorded. Secure Digital Forensic Imaging methods may be applied to help ensure against tampering and improper disclosure. Crime or accident scene photographs can often be re-analysed in cold cases or when the images need to be enlarged to show critical details.

Photographs made by film exposure usually contain much information which may be crucial long after the photograph was taken. They can readily be digitised by scanning, and then enlarged to show the detail needed for new analysis. For example, controversy has raged for a number of years over the cause of the Tay Bridge disaster of when a half-mile section of the new bridge collapsed in a storm, taking an express train down into the estuary of the river Tay.

At least 75 passengers and crew were killed in the disaster. The set of photographs taken a few days after the accident have been re-analysed in — by digitising them and enlarging the files to show critical details.


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The originals were of very high resolution since a large plate camera was used with a small aperture , plus a small grain film. The re-analysed pictures shed new light on why the bridge fell, suggesting that design flaws and defects in the cast iron columns which supported the centre section led directly to the catastrophic failure. Alternative explanations that the bridge was blown down by the wind during the storm that night, or that the train derailed and hit the girders are unlikely.

The re-analysis supports the original court of inquiry conclusions, which stated that the bridge was "badly designed, badly built and badly maintained". A ProPublica investigation found that despite frequent use by the FBI, there are considerable concerns over scientific validity of the FBI's analysis of photographic evidence. ProPublica "asked leading statisticians and forensic science experts to review methods image examiners have detailed in court transcripts, published articles and presentations. From Wikipedia, the free encyclopedia.

Part of a series on Forensic science Physiological. Psychiatry Psychology Psychotherapy Social work. Accounting Body identification Chemistry Facial reconstruction Fingerprint analysis Firearm examination Footwear evidence Forensic arts Profiling Gloveprint analysis Palmprint analysis Questioned document examination Vein matching Forensic geophysics Forensic geology. Digital forensics. Related disciplines.

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Electrical engineering Engineering Fire investigation Fire accelerant detection Fractography Linguistics Materials engineering Polymer engineering Statistics Traffic collision reconstruction. Related articles. Journal of Forensic Sciences. San Diego: Academic Press. Introduction to crime scene photography Online-Ausg. Chapter 2 - Initial On-Scene Procedures. Chapter 1 - Crime Scene Investigations. Boston: Anderson Publishing, Ltd. Retrieved 11 August Retrieved Camera light-field field instant pinhole press rangefinder SLR still TLR toy view Darkroom enlarger safelight Film base format holder stock available films discontinued films Filter Flash beauty dish cucoloris gobo hood hot shoe monolight Reflector snoot Softbox Lens Wide-angle lens Zoom lens Telephoto lens Manufacturers Monopod Movie projector Slide projector Tripod head Zone plate.

Most expensive photographs Photographers Norwegian Polish street women. Categories : Forensic disciplines Photography by genre. Namespaces Article Talk. Views Read Edit View history. In other projects Wikimedia Commons.

The crime scene : a visual guide The crime scene : a visual guide
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The crime scene : a visual guide The crime scene : a visual guide
The crime scene : a visual guide The crime scene : a visual guide
The crime scene : a visual guide The crime scene : a visual guide
The crime scene : a visual guide The crime scene : a visual guide
The crime scene : a visual guide The crime scene : a visual guide

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