Fujifilm GA645 Professional
The Fuji GA645 series is an entire family of fixed-lens autofocus cameras that's an extension of the previous GS folding-lens manual-focus cameras. The "6x4.5" negative is actually about 56mm by 41mm, making it small by medium format standards but still two-and-a-half times the surface area of a 35mm negative. That's definitely bigger-enough to show a quality improvement over 135 film, and makes the negatives easier to scan and more forgiving to deal with. Used properly, the 645 format gives just as much usable image as a cropped 6x6 frame, with the advantage of having a few extra exposures per roll.
Fujinon Super-EBC f=60mm (about 37 mm on 35 format) 1:4, 6 components, 7 elements.
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