Testing Procedure

The body used : Ricoh XR-8 super (KR-5 III in US market) mounted on a tripod
The film used : Kodak T-MAX 100
The focal distance tested : x55 of focal length
The test chart used : USAF Lens Resolution Test Chart
The target setup :

The test charts were placed as shown above on the wall.
The distances from the center to each test chart on the resulted film are;
target "A" : 0 mm (center), target "B" : 6 mm, target "C" : 12 mm,
target "D" : 15 mm, and target "E" : 18 mm.

The results displayed : The result of each tested aperture is displayed in a manner below.
(line pairs per mm)
The aperture tested -> f/5.6
Resolution on target "A" -> 87
Sagittal resolution on target "B" -> 87/87 <- Meridional resolution on target "B"
Sagittal resolution on target "C" -> 87/87 <- Meridional resolution on target "C"
Sagittal resolution on target "D" -> 78/78 <- Meridional resolution on target "D"
Sagittal resolution on target "E" -> 78/69 <- Meridional resolution on target "E"