|
The viewing zones or "sweet spots" are one of the characteristics of lenticular optics. As a result though, it is common to see an annoying "flip" when you move too far sideways and go from one viewing zone to the next. We have developed a special method in the 2D-3D Photo (tm) software for eliminating the jump. You will see this option in the software interface, called the Unlimited Sweet Spot (tm). It is often assumed that this flip is impossible to avoid. Lenticular optics have been around for more than a century, so if there was a solution, someone would have put it into widespread use already, right? To use the Unlimited Sweet Spot option, you will need to reduce the number of frames specified. Although the software may do this automatically later, in the current version you specify half the number of frames you want, plus 1. For example, if you would ordinarily use 30 frames you could specify 16 frames instead (i.e., half of 30 + 1). That will cause an additional 16 - 2 = 14 frames to be added for the Unlimited Sweet Spot to create a smooth transition from one viewing zone to the next. The total frames will then be 16 + 14 = 30. Here is the typical output when the frames are saved as an .avi movie from 2D-3D Photo (tm). And here is the final print using Unlimited Sweet Spot, which you can see in this side-by-side comparison. We used the Unlimited Sweet Spot option with the picture of the teen on the right. But the picture on the left is with the standard lenticular flip between viewing zones. As the Obama print on the left flips from one sweet spot to the next, there is never a flip in the teen print. The tradeoff in using our Unlimited Sweet Spot feature is that with fewer different views the steps will be larger between each, and the picture will look softer with less resolution. But compared to the annoying flip and ghosting that occurs in the flip between viewing zones, people seem to strongly prefer the viewing experience with no flip. Lenticular Sheet to Use: A thick 40 LPI lens has powerful optical effects, which can cause some distortion in the transition between viewing zones, even though there is no flip using this method. To reduce those optical effects, Pacur has a thin 40 lpi lens. While thinner lens has less depth and stereoscopic pop-out, you can still see good movement of the foreground and background. In some situations you may want maximum depth effects with thicker lens. But if your foreground object is being distorted in-between the viewing zones, or the background has an unusual movement, Pacur's lens will have less distortion when using the Unlimited Sweet Spot.
|
Unlimited
|
