This is a standard test for the Olympus 60mm macro, manually focused to 1:1 all photos taken by "rocking" the camera to obtain focus.
#1 photo is the setup tapping a bill to a 35mm slide mount and onto a window for back lighting.
#2 is 60mm at 1:1 17.3mm on the long side
#3 is using a SubSea +10 C/U lens. Image approx. 13mm on the long side.
#4 is using a SAGA +15 C/U lens, as you can see at +15 the image is 8mm on the long side I don't know how much more magnification you need.
The Nauticam CMC-1 is by far the best C/U lens for the 60mm macro at apex. 8.65mm on the long side.
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