-THE VERTIGO
EFFECT-
by Emine Begum Gulsoy
Part
1: Camera Specifications
Model: Nikon CoolPix 7900
Lens: 38-114mm (35 mm
equivalent) 3x optical zoom / F 2.8-4.9
Focus: 30cm (1ft) to
infinity
Images
recorded at:
5 MP
Part
2: The Dolly Sequences
Two subjects were used to complete this
section. First one is Winnie the Pooh on the window frame. Second one is, a
yellow beetle on a street in Squirrel Hill. Both sequences were taken with the
aim of having a background with a larger depth of view. In both cases the
keeping the lightening condition the same was difficult, such that there are
slight variations in the frames. Another difficulty lay in keeping the camera
still. A chair with wheels was used to minimize the camera movement while
moving on a straight line. Another difficulty was to keep the subject size the
same for each frame taken. The camera screen was marked with a highlighter to
have an estimate as where the subject should appear on the screen.
Sequence
1:
Sequence
2:
Part
3: Bells & Whistles
A.
Animated
GIF
Still frames were converted into animated GIFs
using Adobe Photoshop CS3.
Sequence 1:
Sequence 2:
B.
Changing
the Subject and Background Distance
A mirror was used to
try to create a different effect than what is achieved with still frames. Here,
the only still part is the mirror frame. The reflection and background change
at the same time creating a different effect. Using the same technique, the
frames were put into an animated gif format.
C.
Field
of View Calculations
These calculations were made using the
following two images:
Min Zoom Max Zoom
The width of the window: 24 inches
Distance of camera at max zoom: 85 inches
Distance of camera at min zoom: 30 inches
FOV = tan-1 ( d/2f )
FOVmax = tan-1 ( 24/170
) = 8.04
FOVmin = tan-1 ( 24/60 )
= 21.80