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By Philip Lawson
3D objects3D objects
Within Photoshop there exists a class of objects known as 3D objects.
Typically these are Fonts or Objects and each can be illuminated by a range of lighting sources and directions.
Shadows are automatically part of this feature.
Lighing EffectsLighing Effects
Cast Shadow ActionCast Shadow Action
LimitationsLimitations
Such shadows are not “organic” that is:They do not soften with distance from the objectThey do not flow over other “apparent” surfacesThey are not “masked” by foreground objects
LimitationsLimitations
LimitationsLimitations
Organic ShadowsOrganic Shadows
Creating organic shadows requires you to beObservantArtisticHave a working knowledge of Physics, Optics and PerspectiveAdept at using the “hand” tools in Photoshop, this is best achieved with a “tablet”
Organic Shadows 1Organic Shadows 1
It is best to use an uncomplicated picture that has:
Little in the way of “real” 3D topologyLittle in the way of “real” textureLittle in the way of complex pattern or colourationA well defined light source
The Blue DuneThe Blue Dune
The OryxThe Oryx
Whether the object to be “shadowed” is already present in the image is somewhat irrelevant, but it is quicker is if is already a “floater”.
Blue Dune and OryxBlue Dune and Oryx
The ShadowThe Shadow Now need a Mask that roughly defines the
object. If the object is approximately broadside to the
light source AND approximately broadside to you (the viewer) then the Mask can be derived from the object.
If not, then you have to use your artistic skills to draw a mask in Quickmask.
SelectionSelection
Select the object with either:The Lasso (hand or magnetic)The WandBy ColourBy Contrast
Tidy the selection with Quickmask, but do not feather.
The SelectionThe Selection
Save the Selection (as an Alpha Channel)
Distort the Selection/MaskDistort the Selection/Mask
Reload the selection and Distort
Distort the Selection/MaskDistort the Selection/Mask
Modify to account for light source vs viewpoint
Apply the Mask as a LayerApply the Mask as a Layer
Remove white area with magic wand and delete Re-transform and position to get exact fit.
Blur the shadowBlur the shadow
Use the radial blur tool and focus at the feet
Blur the shadowBlur the shadow
This creates the appropriate fall of in edge detail and contrast.
Gradate the shadowGradate the shadow If necessary create a fall of in density with another
Layer, the Gradient tool and a Lighten Blend
Order the LayerOrder the Layer
And retouch the interfaces
Blend Shadow layerBlend Shadow layer
Mask or correct the OryxMask or correct the Oryx
Reload the Oryx Mask and Retouch or Feather if necessary, check alignment with Quickmask.
New Adjustment LayerNew Adjustment Layer
Create and Adjustment Layer with this selection to apply to the Oryx.
Adjust OryxAdjust Oryx
Adjust the curves of the Oryx to suit the tone of light and the master image.
Blue Dune, Oryx and ShadowBlue Dune, Oryx and Shadow
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