Summary – Modern slide shows typically contain multiple image layers. These layers are programmed to move in order to provide the illusion of motion. Timing the moves is “the trick”.
Figure 1 shows the 4 layers used in this short show
Higher layers in a stack hide whatever is below them
Unless the layer is a mask with transparent areas
The top three images are masks
Masks hide anything behind their opaque areas
Here, the car hides/reveals the city as it rolls along
Figure 2 show the timing steps for the show
The time steps occur at the same time for all four layers, but needn’t
#1 & #4 are the times for the start and end of the show
#2 & #3 are times I added to
Momentarily stop & restart the motion
Figure 3 is a more informative view of the timing & motion
If you scan down the center column
You’ll see where each layer is located as time progresses
The motion between time-steps is smooth & continuous
The car starts far left, ends far right, stops briefly en route
Look at the skyline
I moved if from right to left as the car moves
That’s what happens in real-life
Here is the resulting video
NOTE – it is shown twice
1st – the developer’s view, per Figure 3
To test & confirm the motion is as planned
2nd – the audience’s view, i.e. the final video
Enter the International Abstract Photography Exhibit
Entries close March 31st; it’s free
Eight tiny multicolored slinkies
In a cut glass goblet (but you knew that 😉 )
Wide open macro lens, almost zero depth of field
Making an abstract? Learning to isolate is important.
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