Activity for Jerry Coffin‭

Type	On...	Excerpt	Status	Date
Answer	—	A: What exactly do the 2 knobs on my Zeiss 10 × 25B binoculars do? The basic problem being dealt with here is that your eyes don't necessarily focus identically. So, what these do is let you compensate for that difference. The main focus knob changes the focus for both eyes together. You use this to deal with the distance to the subject. The second knob with the ... (more)	—	about 7 years ago