35mm anamorphic, 8-perf 35mm VistaVision, and 5-perf 65mm are all rather similar, depth of field wise -- generally you choose almost double the focal length to match the horizontal view of something shot in 4-perf 35mm spherical, assuming the same aspect ratio is chosen. So you'd use a 40mm lens in anamorphic, VistaVision, or 65mm when you'd normally use a 20mm lens in standard 35mm, and hence you have two stops less effective depth of field when shooting at the same stop and distance to subject. More or less. You can do the math to figure out the exact FOV issues.
Roughly, the horizontal dimensions are:
22mm (standard 35mm sound aperture / RED at 4096)
24mm (Super-35 gate)
44mm (effective for anamorphic due to doubling of view on a 22mm gate)
38mm (VistaVision gate)
52mm (5-perf 65mm gate)
70mm (15-perf IMAX 65mm gate)