L-Tron OSCR360 User manual

PAINTING WITH LIGHT INSUFFICIENT LIGHT OR LARGE AREA
Camera Exposure: Bulb “B” Mode JPEG: Large Fine ISO: 400 Aperture: f/8 (for more depth of field –f/11)
Shutter Speed: Shutter open until flash or flashlight sequence is completed Lens Stabilizer: On
Focus: Manual focus (if needed, use a flashlight to focus) Place camera on tripod and attach cable release
Flash: Manual “M” 1/1 (flash will be off camera)
Technique: With camera composed, focused, and pointed toward subject area, depress cable release and lock it in
“open” position. With flash in hand, quickly walk and manually flash an equal pattern around subject area (outside
camera’s angle of view). Ensure to flash parallel to the deck toward desired areas to be lit. Return to camera and
release the lock on cable release to take photo. Note: A flashlight can also be used to paint. The “painting with
light” technique, allows you to light and image a large area using a single electronic strobe light, a spotlight, or—in
some cases—even a good flashlight. To accomplish this, the photographer moves the light throughout the scene,
exposing one part at a time, while the camera lens and shutter remains open the entire time.
ALTERNATE LIGHT SOURCE PHOTOGRAPHY –SEMINAL FLUID
Camera Exposure: Aperture Value “AV” Mode
JPEG: Large Fine
ISO: 400
Aperture: f/11 or f/16
Shutter Speed: Camera will automatically select
Lens Stabilizer: On
Lens: Zoom
Focus: Automatic or manual focus
Flash: no flash
Technique: Place camera on tripod and attach cable release.
Remove lens shade. Place an orange barrier filter (or
alternative) in front of lens, without touching the lens to the
filter. Low ambient light is preferred. Depending on the ALS
intensity, the exposure may be from one to several seconds.
Make several exposures, making sure that the focus remains
sharp.
LUMINOL PHOTOGRAPHY
Camera Exposure: Bulb “B” Mode
JPEG: Large Fine
ISO: 1600
Aperture: f/8 (for more depth of field use
f/11)
Shutter Speed: 15 seconds (if using f/11,
begin at 30 seconds)
Lens Stabilizer: On Lens: Zoom
Focus: Manual focus (if needed, use a
flashlight to focus) Place camera on tripod
and attach cable release. Flash: no flash
Technique: With the room lights on, take a
control photo of the blood- stained area
with EV markers in place. With the lights off,
take a photo- graph (15 seconds) of the
same bloodstained area. Review the
captured image for correct exposure and
adjust as needed. Take another photo and
bounce a flash or flashlight onto the ceiling
(allows you to see background).
AERIAL PHOTOGRAPHY
Camera Exposure: Time Value “TV” Mode
JPEG: Large Fine
ISO: 400 (use higher ISO 800 or higher if light level is low)
Aperture: camera will automatically select
Shutter Speed: 1/500th
Lens Stabilizer: Off
Lens: Zoom
Focus: Automatic
Flash: no flash
Technique: Overall, Midrange, Close-ups
Do not touch camera to aircraft as this will add vibration!
L-Tron Corporation
Contact Information:
Call Julianne 800-830-9523 x115
Email [email protected]
Contact your trainer:
Hank Kula, L-Tron Law Enforcement Support
585-383-0050 X123
“Digital Camera Quick Reference Guide”produced by: LASD Photo/Digital Unit, 323-260-8570, [e-mail]

GENERAL CRIME SCENE PHOTOGRAPHY
Camera Exposure: Manual “M” Mode
JPEG: Large Fine
ISO: 400; use 100 for bright sun
Preferred Aperture: f/8 to f/16
Shutter Speed: As appropriate for meter reading (avoid <1/30
sec hand- held)
Lens Stabilizer: On
Lens: Zoom 24-105mm
Focus: Automatic or manual focus as appropriate for scene and
lighting Flash: ETTL mode (use flash to fill shadows during the
day) Technique: Overall, Midrange and Close-ups
NIGHT TIME AVAILABLE LIGHT PHOTOGRAPHY
Camera Exposure: Manual “M” Mode
JPEG: Large Fine
ISO: 400 (or higher if necessary –ex. 800 to 6400)
Aperture: f/8 (use as a starting point)
Shutter Speed: 5 seconds (use as a starting point) use tripod
Lens Stabilizer: On
Lens: Zoom 24-105mm
Focus: Automatic or manual focus (if needed, use a flashlight to
focus)
Support: Place camera on tripod and attach cable release
Flash: No flash (optional: use fill flash on ETTL mode for nearby
shadows or to counteract bright lights facing toward the lens)
Technique: overall and midrange
2D SHOE IMPRESSIONS
Camera Exposure: Manual “M” Mode
RAW + JPEG RAW Fine
ISO: 100
Aperture: f/16 Shutter Speed: 1/125th Lens
Stabilizer: On
Lens: Zoom 40-70mm (50mm is ideal)
Focus: Manual focus (if needed, use a
flashlight to focus)
Place camera on tripod along with sandbag
for stabilization; attach cable
release
Flash: ETTL mode with off-camera flash cord
Technique: Ensure camera is parallel and
square with impression; utilize an L-scale;
flash held at oblique angle on all four sides
about 3-5 feet away
*If surface is too reflective for flash, turn off
flash and use AV mode at f/16*
2D LATENT/PATENT IMPRESSIONS
Camera Exposure: Manual “M” Mode
RAW + JPEG RAW Fine ISO: 100
Aperture: f/16 Shutter Speed: 1/125th Lens Stabilizer: On
Lens: Macro fixed 50mm
Focus: Manual focus (if needed, use a flashlight to focus)
Place camera on tripod and attach cable release
Flash: ETTL mode using off-camera flash cord
Technique: Ensure camera is parallel and square with
impression; utilize a sticker scale; flash held at oblique angle on
all four sides about 3-5 feet away. If the surface is too reflective
for flash, turn off flash and use AV mode at f/16
3D SHOE / TIRE TRACK IMPRESSIONS
Camera Exposure: Manual “M” Mode
RAW + JPEG RAW Fine ISO: 100
Aperture: f/16 Shutter Speed: 1/125th Lens
Lens Stabilizer: On
Lens: Zoom 40-70mm (50mm is ideal)
Flash: Manual mode using off-camera flash
cord; if flash is too strong, use ETTL
Focus: Manual focus on bottom of
impression (if needed, use a flashlight)
Support: Place camera on tripod along with
sandbag for stabilization; attach cable
release
Technique: ensure camera is parallel and
square with impression; utilize an L-scale;
flash held at ankle, calf, knee heights on all
four sides about 3-5 feet away
Recommended Settings from The
DIGITAL CAMERA
QUICK REFERENCE GUIDE
Los Angeles County Sheriff’s
Department
Scientific Services Bureau
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