Except for the copyboard or easel, the features of the equipment used for duplicating transparent originals are essentially the same as that used in copying reflection originals. The exception being that the copyboard for copying transparent originals must allow light to be transmitted through the original to the camera.

Except for being lit by transmitted light, large format transparent originals (larger than 35mm) are copied the same as reflection originals. 35mm transparencies are copied with special slide copying attachments for cameras, or copied in specially designed, semiautomatic or automatic slide copiers.

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Figure 8-6. Slide duplicating system.

Regardless of the equipment being used, your goals for duplicating transparent originals should be to duplicate, improve, or alter, as desired, the reproduction of the original.