I Spy With My Little Eye: Binoculars Sizes and Uses

Last week we talked about different kinds of compasses and did some survival drills at a local park. I also mentioned that we were going to be talking about a compass' best friend. Much like a boy needs a good dog, I believe a compass needs a good pair of binoculars. This week I'm going to be going over the different types of binoculars that I have. We will also be returning to our local park where we will be travelling with a map and binoculars only, as well as with a map and compass only. Lastly, we will choose one of these binoculars to add to our backpack at the end to build it out better, much like we did last week.

First let's start out with a quiz. I'll show you the binoculars and the numbers on them, and you figure out which binoculars are the best. From Left to right,the first pair are 10x25, the second are 16x32, and the last pair are 8x40. Now, don't cheat, but if you think you know leave a comment on this blog with the answer! If you aren't sure what these numbers mean, you're more than likely going to go with the biggest pair, the 8x40. Actually the best pair I have are the 16x32 pair. Now, let's talk about what these numbers mean. The first number, for example the 16, refers to the magnification of the object I am viewing. The first number on the larger binoculars is 8, letting us know that magnification is half of what it is on the second pair of binoculars I showed you. The second number refers to the distance in millimeters across the lenses of the binoculars. So the first pair have 25 millimeters, the second 32 millimeters, and the third have 40 millimeters.

So now you may be thinking, if one pair of binoculars is clearly better than the others, why do you even have the other two? Well, much like with the compasses, the different types are better suited for different tasks. The 8x40 binoculars I prefer to use for hunting. It's not going to magnify as much, but I do have a wider view of what I am looking, much like having peripheral vision. This allows me to look around the area of a tree and easily spot when a squirrel comes into view. The 16x32 I prefer to have with me at all times. It is very useful when looking for something in particular or if I am looking around with them trying to spot something. The 32 millimeter lenses give me a good window of vision to work with as well. The 10x25 pair are a good in between. Sometimes with the 16x32 pair I get drawn in to one spot with the powerful magnification at close distances, but with the 10x25 it's not so bad.


Now I am going to show you what I see through each pair of binoculars. There is a leaf in particular I am going to point out, then we are going to view the leaf through each pair of binoculars to see what we can see. The 10x25 can single out the leaf pretty well way up at the top of the trees. There is a leaf to the right of the one we are looking at that I am trying to get in the same viewing circle as well. I'll be talking about why in a minute. The problem with the 16x32 binoculars is that they are so zoomed in that you can easily become disoriented when trying to spot an object or find where you are. When we locate the leaf we cannot get the second leaf in view at the same time. This is because the magnification is better for pinpointing a specific object. With the 8x40 binoculars we can easily get both leaves into view. It is not the most zoomed in, but we still can see some details as well as still have room for anything else that may come into view.

Now we are going to return to the park and work with our binoculars a bit more. I am beginning at the location that we are calling the ranger station as per last week's blog. What  I am going to do is take my binoculars, and spot for the first X designated on our map. Now, I know that the first X is directly in front of me, but I would do is spot the feature, locate it on my map to confirm, and then begin walking in that direction. Now the second feature which is south of my I am noticing has 5 appendages coming from it. These represent two slides, a set of monkey bars, a staircase, and what I am assuming is

a second staircase around the back. I simply look through my binoculars to see each of these things more clearly, then confirm again with my map, and head that way. To add a bit of a challenge this time I didn't go exactly where the X was on my map. Before I move on to the next set of playground equipment, let's say I couldn't confirm what the feature was by viewing it through my  binoculars and referring to the map. In this instance I would try to look for features around where I am looking to go to confirm the location. In this case there is a bench and a pole near the playground equipment. I can spot those, check with my map, and we are ready to go. Now this is the home stretch. From here with my binoculars I can see the dirt circle with the ride-on equipment, move on, and from there, spot my "camp" which was the bench I started at in the last blog.

Now we are ready to start our second drill. I will be using my 10x25 binoculars and my military style compass. What we will be simulating is a friend going off from camp, and it seems like they have been gone a while and you think something may have happened. Now in this scenario I noticed the direction they went in. I have my binoculars on top of my compass so I can easily switch my views between them. Now I will view with my binoculars the two trees that my friend traveled through and try to spot a flag or any signs on the trail that may signify the direction they went. I don't see anything so now I am going to take a bearing of that direction which is about 50 degrees, so we are going to head that direction. After arriving at the two trees we are going to scan again and in this simulation, we are going to say our friend is smart enough to leave behind trail markers to indicate their direction. So I scan with my binoculars and find a pile of rocks, or a stick with an arrow pointing in their direction. I take a bearing and get about 60 or 65 degrees, and start walking. From here we are going to scan about 360 degrees. I don't notice anything and I am sure that this is an unnatural landmark. So I am going to orientate myself and continue following the 60 to 65 degree bearing and check again in a few yards.

Now I've reached what we are considering the end of the road. What I am going to do is place a marker here so if I cannot find my friend in one direction, I can come back to this spot and check a different direction. My options here are a very steep hill or a much easier to walk path. I am going to say my friend took the easier path. I am going to take the bearing which is about 320 degrees. I'm going to continue scanning every few yards and eventually I do notice them. It appears as though she has hurt her foot, so at this point we are going to try to get her back to camp, and then to the ranger station for some aid.

At this point we have to choose between the 16x32 and the 10x25 binoculars to add to our backpack. The 16x32 binoculars have a pretty good balance between magnification and lens size, though they are not as balanced as the 10x25 binoculars. I do get better picture with  the 16x32 binoculars and naturally the hand shake is a little bit worse. At the end of the day, the one thing the 16x32 binoculars can do that the 10x25 can't is magnification. So with that being said I am choosing to add the 16x32 because I would rather have that feature and not need it, than need it and not have it. A quick word on the military compass that I used. I had a lot of problems with it. It did not want to give an accurate reading through the peep hole or when I matched it on the compass. I would hate to have someone buy it and have the same problems as me. It's because of this that I am happy with the decision I made to add the modern compass to my pack instead.

Next week we will be doing a craft that will help us keep pace with this compass series, so you definitely don't want to miss it! As always feel free to comment, hit the follow button in the top right corner, share this blog, and check back next week for a new one on Sunday 10pm (est). If you want to keep up with me and what I’m doing, Follow me on Facebook: @BPackBushcraft and on Twitter @BPackBushCraft. Lastly if video is more your style check out my YouTube Channel backpack bushcraft where there is a video version of this with the same title. Until next time, keep those fires burning and put another log on for me.