"Low magnification" refers to a setting or level on a device, such as a microscope or a camera, that makes an object appear smaller than its actual size. Full definition
Remaining structures were either photographed directly in the baths at low magnification 7 — 75 × or removed for higher power imaging. (journals.plos.org)
You might want to spend a few extra dollars and also get a second, lower magnification eyepiece which makes objects move slower through the field of view. (geekwrapped.com)
Even at such low magnification, the images were fuzzy, and sometimes a bit of imagination was required to reconstruct the structure of the object in view. (discovermagazine.com)