MEMS Photography - or - How to coax pretty images out of a point and shoot camera - with - Brandon &...
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Transcript of MEMS Photography - or - How to coax pretty images out of a point and shoot camera - with - Brandon &...
MEMS Photography
- or -How to coax pretty images out of a point and
shoot camera
- with -Brandon & Chris
Exposure
• Exposure is the amount of light that falls on the sensor when taking a photo.
• Affected by 3 variables on camera– Sensor sensitivity– Shutter speed– Aperture
Sensitivity (ISO Speed)
• Increasing sensitivity allows short exposure time without adding light to dark scenes.
• Cost is increased noise and decreased colors.
ISO 80
ISO 1600
Shutter Speed
• Shutter pulls back to reveal sensor to light.
• Shutter speed is typically fractions of a second.
Aperture
• Aperture is the hole that lets light hit the sensor.
• Large aperture lets in lots of light, but creates narrow depth of field.
f/11
f/32
Lighting
• Situation: You want to take a close-up picture of your device.
• Not enough light in room to illuminate device.
• Result is a blurry picture.
Lighting
• Camera compensates with flash.
• Problem: The flash is located too close to the device and obliterates the image.
Lighting
• Solution: Off-camera lighting
Off-camera Lighting
• Provides endless options.• Benton 232 has snake lights.• Example: Side lighting to show
texture
Flash Lighting
• Not always bad!• Good for subjects which are 3’-5’
away.• Example: Fill flash.
Perspective• Remember: Move around.• Find the right perspective to best
show off your subject.
Post-Processing
• Like film, digital photos have room for “development.”
• Photo software, like Paint.NET, provide adjustment of color balance, saturation, and brightness.
Macro Mode
• Macro mode allows really close focusing.
• Good for milli-scale photography.• Tip: zoom-out to zoom-in.
Miguel Macro Mode
• Reverse-mounted lens for increased magnification.
Microscope Camera
• Sometimes subject is just too small.• Benton 232 has camera which
mounts to microscope and stereoscope (3D!).
Microscope Camera
• Subject does not need to lie flat and lifeless under microscope.
• Prop device up to get perspective.
Microscope Camera
• Problem: Light from above is not reflected back to camera.
Microscope Camera
• Solution: Off-camera lighting!• But we can only focus on small area.
Microscope Camera
• Problem: Narrow depth-of-field.• Solution: Smaller aperture.