The best replacement for magnification is resolution.

The best alternatives to magnification are rated as following:
★★★★★  resolution
★★★  resolving power
★★★  focal length
★★  field of view
★★  total magnification
★★  diopter
★  resolution microscope
★  angular magnification
  zoom ratio
  field diameter
  optical magnification
  length
  optical zoom
  object distance

Your alternative for magnification is not listed? Suggest!
Speaking about magnification, one probably shouldn't forget about eotech.

Other search terms related to magnification and their ratings are:
★★★★★ eotech
★★ electron microscope
★★ scope
★ light microscope
You have in mind a companion for magnification and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of magnification in all years. Click on graph for more.
magnification
resolution
resolving power