Methods of Lighting
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Transcript of Methods of Lighting
Methods of LightingBio 498/698
Lighting BasicsEquipment
DynaliteFiber opticsModeling lightsSolMateLight Pad
Moving Modeling LightsAdjusting the intensity on the Dynalite Flash
PowerpackAdditional Equipment Used
Equipment
Back Lighting Pad
Magnetic Articulated Arms
Sol-Mate
Fiber Optic Illumination System
Fiber Optics
Modeling Lights
Dynalite
Modeling Lights w/ umbrellas
Lighting BasicsModeling/studio Lights:
Modeling Lights can be physically movedThe positions the lights are moved to depends
on the specimen, the camera, the lens, the shape and size of the room.
In some cases the modeling lights must be moved for individual specimens (Coleoptera, etc.)
In some cases the modeling lights can stay in the same position for multiple specimens (Lepidoptera, etc.)
Basic TechniquesOblique IlluminationTransmitted IlluminationPhotographing Reflective Objects
Backgrounds
18% Grey paper backgrounds
Overused Correct
Wrong Side
Pedestal with Grey background paper
(The pedestal is where specimens can be placed) The larger background paper is where stands are placed
Umbrellas
Umbrellas allow for light to be bounced onto the specimen. This brightens the image without washing it out.Umbrellas should always be positioned so that the inside is facing the specimen being imaged.
Diffusers (Diffusion Cylinders)
Note: By adding a diffuser around the specimen in addition to bounce light for reflective subjects. This technique is used in controlling the reflections on surfaces.
Styrofoam Cutouts
Diffuser with Styrofoam Cutouts
Diffusers (Additional)Studio Light with Diffuser
Studio Light without Diffuser
Diffusers
Fiber Optics
Magnetic Articulated Arms
Arm w/ Fiber optic light
Tenson Adjustment
Receptacle
Locking Knob
Locking Lever
Magnet Switch
Magnetic Base
Fiber OpticsLock
Un-Lock
Fiber Optics
Fiber Optics setup
Back Lighting PadUsed for backlighting specimens
Attaches directly to the fiber optics system
SolMate Trans Illumination SystemIlluminates THROUGH the subjectGreat for translucent subjects where internal parts need to
be illuminatedBacklight Source
Sol-Mate
Locks the fiber optics in place
Adjusts light intensity Diffuser
Adjusts aperture
Spotlight Position
•Illuminates transparent or translucent objects at 1:1 to 40X objectives•Sol-Mate has patents pending
Lighting ConceptsLighting can be used creatively to highlight
different parts of an objectDifferent light
Key Light – directly on subjectFill Light – on subject from side to fill shadowsHair light – on subject from behind to separate
subject from backgroundBackground light – illuminates the background
to eliminate shadows cast by subject or foreground elements
3-Point LightingKey LightFill LightHair Light
4-Point LightingKey LightFill LightHair LightBackground Light
Modeling Lights: Example 1
Note: This is an example of how the modeling lights can be positioned.
Full and Full Intensity (Full Power Variation)
Half and Half Intensity (Full Power Variation)
Quarter and Quarter Intensity (Full Power Variation)
Quarter and Quarter Intensity(Power variation turned down 2 turns)
Quarter and Quarter Intensity(Modeling Lights Moved)
Modeling Lights Example Position 2
Tricks and HintsFor higher
magnifications (i.e. 65mm, K2), lighting intensity will decrease
For lower magnifications (100mm and 50mm), lighting intensity will increase
Changing the apertures will also influence lighting intensity. A lower f-stop yields increased lighting intensity, as such a higher f-stop yields lower intensity.
ConclusionLighting is important for the imaging process
and will require adjustments and knowledge of different techniques for what works and doesn’t work depending on the specimen and equipment used
It will likely take some trial and error – don’t worry! The magic will happen with enough effort.
Additional support: http://www.visionarydigital.com/Support.html