CSA 1 - Footwear Impressions

Shoe/boot r associated/disassociated w/ what?

Crime scene footwear impression

Crime scene impression comparison results in what?

Footwear outsole ID/inclusion/elimination

Impressions r found where?

Soil, snow, counters, tile floors, doors, wood/vinyl funiture, paper item

Cast impression choice r caused by what?

Substrate conditions w/ impression in/on, impressions include fine humus soil/snow r good 4 cast, but coarse substrates r not good 2 retain tire impression detail, impressions r photoed/cast 2 recover maximum impression amount detail

2 document footwear impressions, photos r good way 2 collect what?

Impression evidence 2 compare since comparison evidentiary value r based on impression quality/collection/document, overall photos r used w/ standard-form lens 2 show impressions in relation 2 other scene features

2 document footwear impressions 2 lower distortion, impression photo uses what?

Tripod/detachable flash

2 document footwear impressions 2 lower distortion, document photo w/ what?

Measurement scale

2 document footwear impressions 2 lower distortion, scale is not over/across what?

Impression

2 document footwear impressions 2 lower distortion, scale =

Level w/ impression bottom + be same size as impression/proper document

2 document footwear impressions 2 lower distortion, mount camera tripod over what?

Pattern w/ film plane parallel 2 impression

2 document footwear impressions 2 lower distortion, impression kept away from what?

Direct sunlight 4 flash photo

2 document footwear impressions 2 lower distortion, detachable flash/light source @ what?

45 degree angle/less based on depth impression, flash angle variety r favored, oblique light photos r taken w/ flash direction from 3 diff directions around impression

2 document footwear impressions 2 lower distortion, entire impression r captured in what?

1 frame unless overlap photos 2 capture good resolution

2 document footwear impressions 2 lower distortion, single-lens reflex/similar cameras w/ what?

Changeable lens r used 4 capturing impression evidence

2 cast foot impression evidence, 4 photo cast performed 2 document impression in what?

3D form

2 cast foot impression evidence, cast choice caused by what?

Substrate conditions/environmental factor

2 cast foot impression evidence, photo impression b4 what?

Cast

2 cast foot impression evidence, don’t remove soil adhering 2 what?

Cast/attempt cast cleaning after recovery b/c it may damage cast detail

2 cast foot impression evidence, place each cast in what?

Protective/breathable container after drying

2D impression:

Deposit/removal of material 2/from surface, found on paper items/doors/counters/tile floors/hard surface/substrate

What r 2 ways 4 2D footwear impressions:

Dust removal/other material from surface by adhering 2 outsole leaving void (negative) impressions, material deposition/contaminate like blood/dirt/oil present on footwear outsole, transfer 2 surface → left impression

4 2D footwear impression, submit_____w/ impression

Entire item

2D impressions r lifted w/ what methods?

Electrostatic dust lift, gel print lift, tape/clear adhesive material (w/o other material)

2 enhance/optimize footwear impressions, chemicals/powders r used 2 what?

Enhance/optimize impression

2 enhance/optimize footwear impressions, determine b4 chemical application if what is required?

Blood sample, but chemicals interfere w/ optimizing impression DNA analysis

2 enhance/optimize footwear impressions, forensic light source optimizes what?

Visualization/impression photo, impression exam w/ forensic light source r used b4 chemicals/powders

2 enhance/optimize footwear impressions, blood doesn’t what?

Fluoresce, but is blk in IR range → contrast btw impression/item’s substrate