With practice and increasing skill in scouting, you will eventually want to equip yourself with a wider range of magnifiers to be able to complete nearly all of your sampling and identification tasks in the field. You can . . One style is not necessarily better than another. It depends on the style of magnifier you feel comfortable using. When using magnifiers, be aware of distortion, and chromatic or spherical aberration errors that can occur.
Distortion is a defect in a lens where images of straight lines appear curved.
Chromatic aberration errors are when the lens cannot focus light of different colors at a single point, causing a blue-red image. Spherical aberration errors cause rays to focus at different distances. Different types of lens systems offer varying levels of correction for these problems. The simplest type of lens is the single aspheric lens. This lens is designed for small powered magnification because it is one lens.