Solipsism is basically what you get when you try to interpret subjective reality through an objective lens.
flat-field achromatic objective lens
When I view reality through the objective lens, my standard of accuracy is how well I can predict what's going to happen.
So this is very, very low-cost to buy, and actually, the objective lens in the microscope, the very powerful lens we use to image the atoms, is also from a CD player.
Accurate measurement of geometrical distortion of image display system with wide-angle objective lens is the precondition and key of digital distortion correction.
I'm also somewhat mystified at Pentax's failure to provide lens caps for the objective lenses.
objective lens of the scanning electron microscope
