The viewing distance is slightly off, either too close or too far. Find out where the viewing distance is by moving closer and further until it looks correct. You can then adjust the distance by interlacing with a slightly different number in the Lenticular F/X dialog box. Use a slightly higher number to make the viewing distance further away ( for example: 40.80 instead of 40.75 ), and a slightly lower number for a closer viewing distance ( for example: 40.70 instead of 40.75 ).