Leica microsystems ez4 educational stereo 35x and 56x microscopes leica microsystems 10447197 the leica ez4 educational stereo 35x microscope with 441 zoom is ideal for entry level university and college courses such as biology anatomy and chemistryits 7 way led illumination system provides incident oblique and transmitted light for high quality illumination and contrast of any application the greenough optical system provides a 3 dimensional view of the specimen leica microsystems ez4