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Clearly Visible Presentations, LLC
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Clearly Visible Presentations, LLC was formed in August 2007 to teach the science and technology of optics, lighting, photography and visibility to the forensic investigation community.
While we do not provide direct consultation on forensic cases within the company, our staff has nearly 50 years experience in the courtroom environment. We understand the tasks assigned to forensic investigators and provide training to ensure that evidence is collected using scientifically valid techniques.
I-30 Eastbound about 40 miles east of Dallas TX. in a 2011 Nissan Versa at 65 mph. Exposed at f/5.6, 1/20 sec and ISO 3200 with a Nikon D-5000 handheld. Focal length 55 mm.
LOW BEAM
HIGH BEAM
Both photographs show the same semi-trailer. Clearly the trailer is more visible in the right image. Why? First, the obvious differences between low and high beam. But, secondly, the left photo was taken while in a sag curve while the right photo was taken approaching a crest curve. Consider this rule:
Drive on high beam until you can't!
