The second version of the Yashica Dental Eye series was released in the 1990s. The biggest change from the original is the Dental Eye II has a 100mm f4 lens as opposed to the 55mm f4 found on the first Dental Eye. This more telephoto focal length allowed dentists to achieve 1:1 magnification ratios while working at a slightly farther distance (15.5cm) from their patients. Like the original Dental Eye, the Dental Eye II retains the built-in ring flash at the end of the lens to provide strong, even illumination of subject matter while working at close distances.
The Dental Eye II is essentially a repurposed Yashica FX-3 Super 2000 with most of the user controls removed. The camera retains its TTL light meter and adjusts both shutter speeds (16 seconds - 1/2000) and aperture (f4 - f22) while the flash is turned on. When flash is turned off, the camera fixes the aperture at f4 and sets the correct shutter speed (aperture priority) to match. Also automatic are film advance and DX code detection of film speed. It is worth noting that like many cameras that rely on DX code reading, when film without a DX code is loaded, the Dental Eye II defaults to ISO 100.
Focusing of the Dental Eye II is entirely manual though with a focusing range of 155cm (1:15 magnification) to as close as 15.5cm (1:1 magnification). This is a camera that will get you super close to your subject matter, but it also will keep you close as it cannot focus on distant subjects at all.
Yashica released a Dental Eye III in 1997 that changed some of the cosmetics and introduced a motorized rewind to compliment the motorized film advance, but was otherwise very similar functionally to the Dental Eye II.