A 35 mm film microfiche conversion may not require different microfiche scanner hardware accessories than 16 mm jacketed fiche. And when it comes to the digital microfiche conversion, the final product is not different when comparing 16mm microfiche to 35mm microfiche images. An exception would be the actual image file size and dimensions.
Generally, maps, blueprints, and engineering drawings are contained on 35 mm jacketed microfiche cards, however, there are many cases where 8.5 x 11 images or 8.5 x 14 images are present on 35 mm film. Of course, 16 mm film can also contains maps or blueprints. "35mm and 16mm Combo cards" also exist. These are cards that may contain various size images like images from index cards, 16mm roll film, 35mm roll film and so on.
From the technical standpoint, the reduction ratio or aspect ratio is very different. Most 35mm film was reduced 12-16x, while 16mm film usually ranges from 20 to 48x. The scanning price for 16mm microfiche and for 35mm microfiche can also be different.
