  This article experimentally examines different configurations of a novel
multi-camera array microscope (MCAM) imaging technology. The MCAM is based upon
a densely packed array of "micro-cameras" to jointly image across a large
field-of-view at high resolution. Each micro-camera within the array images a
unique area of a sample of interest, and then all acquired data with 54
micro-cameras are digitally combined into composite frames, whose total pixel
counts significantly exceed the pixel counts of standard microscope systems. We
present results from three unique MCAM configurations for different use cases.
First, we demonstrate a configuration that simultaneously images and estimates
the 3D object depth across a 100 x 135 mm^2 field-of-view (FOV) at
approximately 20 um resolution, which results in 0.15 gigapixels (GP) per
snapshot. Second, we demonstrate an MCAM configuration that records video
across a continuous 83 x 123 mm^2 FOV with two-fold increased resolution (0.48
GP per frame). Finally, we report a third high-resolution configuration (2 um
resolution) that can rapidly produce 9.8 GP composites of large histopathology
specimens.
