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Tips & Tricks  | Agfa Graphics, Mortsel, Belgium  | 14 December 2015

Lenticular printing on Agfa Graphics flatbed printers

Lenticular printing uses lenticular lenses to produce images that give an illusion of depth or that appear to change or move as the image is viewed from different angles.

Determining the pitch

A lenticular printing project always runs the risk of failing in the relation between image and print media resolution. Different suppliers offer lenticular sheets with fixed lens distances or pitches (20, 40, 50, 80 lpi). The actual resolution often slightly deviates from this. That is why pitch determination is very important.

We distinguish between a mechanical pitch (the absolute pitch of the printer) and the visual pitch of the lenticular sheet. Both have to be brought into alignment. Correction is done by means of the pitch test.

Pitch test

The pitch test prints minimal variations in lens resolution. Once printed, the lenticular sheet is placed on the test. A moire effect quickly indicates what the correct resolution is.

Determining the resolution in Photoshop

The value in lpi that was obtained in the previous step should be applied as correction value on the image in Photoshop. Suppose that the outcome was 20.05, then the correction value consists of:

Optical pitch x the number of images = PPI

e.g. the optically determined pitch was 20.05 and the number of images was 2 > 20.05 x 2 = 40.1

Subsequently, this value needs to be used for the images in Photoshop.

We have some real-life examples in our demo centers:

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