>>4334887Optics are more or less same in all cheaper real microscopes. Non-toy microscopes are limited by diffraction and lightning. Expensive microscopes have massively sturdy mechanics and fancy lightning systems. Optics also may have sightly more aperture which helps with diffraction and pass polarized light unmolested.
You do understand that depth of field through microscope is really thin? And anything you put under scope needs to be in mounting medium (which can be water in lower magnification) between a microscope slide and cover slide for optics to work properly. If you want anything but 2d slices of "tiny shit" a microscope is not ideal tool.