10X13 Zeiss D40 Aplanatic-Achromatic 40D, best of all the small loupes Video microscopes Under normal circumstances focusing a

Under normal circumstances focusing a 20X is painful

75X to 18X

In practice

5x 110mm 2x + 3

10X13 Zeiss D40 Aplanatic-Achromatic 40D, best of all the small loupes Video microscopes Under normal circumstances focusing aSummary 10X13 by Zeiss (10X magnification, 13mm diameter lens.) It is achromatic (distortion corrected) and aplanatic (colour corrected) and coated (to prevent reflections. Genuine Zeiss loupe. To help you compare the 10X loupes, a summary of this item is shown in blue: SIZE: 10X12 10X13* 10X14 10X20 10X21 10X21 10X23 "30X21 (magnification X diameter of lens, mm) * useable diameter of this lens (allowing for the rim that holds the lens in place) 12.