01
Optics, Plainly
Find a comfortable focus routine
Set eye spacing and focus according to the instrument's instructions before following movement.

Short routes, plain-language optics and a field kit that earns its place.
2 notes
Set eye spacing and focus according to the instrument's instructions before following movement.

Read magnification and objective-lens size as tradeoffs in steadiness, field of view, bulk and low-light use.
