f=3.7mm Cone Pinhole Lens (P1)
Back Focal Length: f=3.3mm
Aperture Ratio: F2.0
Dimension: 12.0 X 7.3 mm

f=3.7mm Flat Pinhole Lens (P3)
Back Focal Length: f=3.3mm
Aperture Ratio: F2.0
Dimension: 12.0 X 7.3 mm

f=4.3mm Super Cone Pinhole Lens (P4)
Back Focal Length: f=3.51mm
Aperture Ratio: F2.0
Dimension: 12.0 X 7.75 mm