Figure 7
From: Extended the depth of field and zoom microscope with varifocal lens
The corresponding diffraction MTF at different magnifications (M) and focal distance (z). (a) M = 10×, z = 1 mm. (b) M = 10×, z = 3 mm. (c) M = 10×, z = 3.5 mm. (d) M = 20×, z = 1 mm. (e) M = 20×, z = 3 mm. (f) M = 20×, z = 3.5 mm. (g) M = 40×, z = 1 mm. (h) M = 40×, z = 3 mm. (i) M = 40×, z = 3.5 mm.
