Nanuk 920 Hard Case First-Aid Kit (Red)

The Sony A1 is a bit larger than the A7R, so there is no guarantee that it will fit into the 920 Case.

There 2 layers of foam that are each 2 inches thick.

Unfortunately, I am not sure. The Nanuk 920 Case for Sony a7R Camera and Lid Foam (Black), B&H # NA920ESON1, includes pre-cut foam that is designed for use with the Sony Alpha a7R Mirrorless Digital Cameras (or cameras of similar dimensions). The Sony Alpha a7R Digital Camera's dimensions are 5 x 3.7 x 1.89" (127 x 94 x 48 mm). The Canon EOS R5 Mirrorless Digital Camera's dimensions are 5.43 x 3.84 x 3.46" (138 x 98 x 88 mm). The Canon EOS R5 is slightly larger than the Sony Alpha a7R Digital Camera, so your results may vary. However, as the pre-cut insert is manufactured from foam, if you need more room from your camera, it may be possible to take a sharp blade such as an X-Acto Knife or a box cutter to expand the size of the foam to fit your camera.

Yes a Sony A7siii does fit in this case.

Hi, yes, this case can be used for an A7s II.

The foam is pre-cut into the configuration shown in the images. For the standard cubed foam configuration, please see https://bhpho.to/363A8N4

No. Following unit is designed and made for the Sony a7R system.

I think so, but not many of the larger bodies/lenses will fit. I have a Fuji XT1 and three lenses, plus filters, 5 spare batteries, and various other bits, and they all fit fine. I got the padded inserts rather than the foam. I highly recommend this case, or a bit larger one from Nanuk. It's a pleasure to use.