Understanding Binoculars: Magnification and Stability 

We’re going to Big Bend in a couple of weeks ru-vid.comUgkxSt0aBrzyS1nxONvwm1e0u7ZDFD_eypAO so I bought these to use during the hikes, didn’t want to miss anything. As you can see by the photos I tested the phone adapter by taking a phone of a power pole on the next block and you can see the results. It took a couple of minutes to line the phone camera up to the eye piece, there’s a bit of a learning curve, but once it was longed up it stayed in place without any issues. So far I’m impressed with the feel and the weight, the neck strap is wide and soft so it feels good on my neck. I look forward to using it with my friend and grandson in Big Bend!

I have been searching over 40 years for someone to finally explain it properly. Thank you Sir!

Best and most simplified explanation with great animation as well. Thumbs Up to you sir.

Great clear, concise and practical video. Really useful for complete novices like me. Many thanks.

Simple and very understanding. Thank you. I’ve always wanted to know.

Very helpful THANK YOU

So helpful, clear and concise. Thank you!

Great simple video.Thank you for making it.

A good explaination ,thank you.

Very concise & informative. 👍

very informative, thank you! Loved the animations and explanations

Thank you so much for the info very helpful God bless you all from Seattle WA. 😊👍

Really good!!Thank you,it really helped me to choose my binoculars!

Easy peasy, I just didn't know. Thanks. I was shopping on Amazon for a pair of noc's for my son's 5th B-day and I didn't understand. I won't forget your video. SUBSCRIBED!!

it was really helpful! thanks mate

very informative as i am buying a pair right after this video. ! thanks

Thx for the explanation :) Very clear and good

Best video with explaining!

Thanks for very clear clarification! )

Nicely done.

Cool explanation , thanks

thank you most helpful.

Tq for the info Eagle optics, it was useful

The Animation is Super helpful.

the best one for entry education

Good explanation. The explanation of image stability after 2:00 pretty well shows how it looks with image stabilisation, though. Slow movements are not a problem. The micro vibrations from the hands are much faster and above a certain magnification it's too much for the eyes to compensate.

Best video on this subject watch 20 plus

Thank you so much !!!!!!!! Damn it this was explained to me years ago by someone who didn't know the truth. Thanks again

Thanks God bless you

Thanks a lot !!!

Easy, simple👍👍👍

Thanks

This was an excellent video. Thank you! The one thing I would have liked to see is what the difference is between those binoculars of different sizes, and how that affects what you see when you look through them. Also, how does the second number, the diameter of the input light lens, affect what you see?

Thanks !

Is the intro the same as in Veritasium channel, or is it some stock music from youtube?

Thank u so much bro💖

Helpful ❤👍

Thanks.

Very nice explained

What I notice is something interesting when I look through my binoculars, everything around me from afar looks shallow, like the background is closer together with the foreground

Yup

For those wondering why birders like a wide field of view when the bird is usually just in the center, one top reason is that birder's need to FIND the bird and a narrow field of view makes it hard to spot the bird. Just today I saw a bird on the end of the third branch of a tree about 100 feet away. I pulled my 7x binocular and had an easy time finding the third branch and then the end of the branch. Unfortunately, I could not make out the details of the bird. I pulled up my 10x binoculars to see more detail, but for about 30 seconds, I could not locate the bird. All I saw were little bits of tree branches and I had no idea exactly where the binoculars were pointing. The bird flew away before I could find it using the 10x pair. So, even though the 7x pair did not give me the detail I wanted, at least I saw the bird! I am looking to buy a new pair of binoculars, and this trade-off is challenging me. I just went online and saw the Dick's sporting goods has a model that is 10x50! It weighs more, but the 50mm objective lens is used to offer a wider field of view. On the other hand, and to my disappointment, the field of view is not as wide as one would expect for such a big lens. So, I am still not sure what to buy! :-b

thank u so much

You should have mentioned the angle of view - very important. It's the _third_ number (not mentioned in the video). One can have two 8x30 (say) binoculars, yet one will have a grand, _huge_ field of vision, like an IMAX screen, while the other will give the impression of tunnel vision. Unfortunately, these days the wide field of view is not something deemed important by most manufacturers, so for example binoculars with a 70 degrees apparent field of view (AFOV) are a rarity. Maybe that's why this was not mentioned in the video, binoculars with a wide AFOV are hard to find (easier to find in Japan, so search the Japanese Amazon and eBay).

nice

My monocular is showing blurred image. Its prism has dislocated. I dismantled it but could not take out the prism. Can you please share some video on such issue.

sooo, the sakura 30x60, makes it bigger 30 times?

The US, British, German, and Japanese Navies during WWII determined that on ships, lookouts scanning for ships on the horizon, could only view thru seven power binoculars even on the most stable of ships, because of their arms became fatigued very quickly. They chose 7x50 binoculars for the light gathering ability of the 50mm objectives. The Captains of German U-Boats were given 10x75 binoculars for target spotting at night on the surface with their elbows resting on the edge of the bridge. Advancements in design have made 8x42 extremely popular for birding, but for beginners, 6x40 may be a better choice until you become proficient at holding steady. HINT: Please don't get tiny "pocket size" binoculars! Hard to hold, hard to focus, hard to see thru.

oh dear Lord! Thank for this video.

What's the 2nd # for?

Doesn’t that mean it magnifies less than my iPhone ? Thanks (I’m wondering whether or not to buy some binoculars for seeing nature better)

Wich figer is best for zoom 12/50?or wich is recommended for me because I m big fan of binoculars and I want very good zoom wich will b better for me??

You showed 4 bino's of different size with 8x mag, how would viewing be different from smaller one and largest one.. also need info about power adjustment for plp who wear powered glasses.

I have binocular magnification 24x 120*90 bijia ....how much run in meters

What about the 42? I was hoping to see what that does.

of the small binoculars that has the most stable image without shaking.ultravid 8x20,nikon8x20hg and Nikon 6x15micron?why is the image shaking?

I'm interested in binoculars for driving. Sounds bizzare but I want them to be able to see down the highway, moving vehicles and plates. What power do I purchase from your store.

How k m seen it

I have a huge pair of very powerful binoculars which are best mounted on a tripod, that way I can see in my neighbours bedroom and watch her without any shake 👍

I have 90*90 binoculars, 430 ft AT 1000 yards, 143 meters AT 1000 M....? First 90 means 90 times more power than eye? Is it true because most reviews are not going above 12x

My binoculars are 10 x 50 but when I turn the magnification wheel it doesn't seem to magnify. The focus wheel works great , though.

So if i use the eye lense in front of my camera.. Will it work?⚡⚡🚨🚨🚨🚨🎈🎈

So aren't they adjustable?

Huh So we're invading a bird's privacy by looking at it without it seeing you...

De 8 para 10 já se vê boa melhora na aproximação. Se for correta Essa simulação.

Hi Im sorry to hear that you finished with your optics business. I see that you have lots of great video content. I wondered if you are interested In selling your video content on you tube. Also I wondered if your domain eagleoptics.com is for sale and if yes what is the price Best Regards James Bix Stealth Birding

Good as far as it went but you really should have covered what the second number means in practical terms rather than just telling us in a line what it signified.

1:11

So 25x100 is 25 its size..?

“Understanding Binoculars: objective lens size”. Can we have something like that please?

I think with naked eye it should be 1x magnification :))

Didn’t really talk about the second number much. A little confusing - at least to me.

Binocuwehr

Hey, Vsauce Michael here!

This video isn't exactly correct. I have a pair of porro 10X50 binoculars with a 6.8 degree field of view, its not the biggest but its huge for 10X. It feels like there is more freedom to navigate, no looking down a straw tube effect because of the wide field of view making movement less noticeable. I have used binoculars with less power where the movement was more noticeable because the field of view was narrower, around 4 to 5 degrees, these were roof design but using porro in the 7X to 8X with a massive field of view of 8 degrees or more where there were no noticeable shakes. My experience is that a wider field of view makes an image more stable than if it has a narrower field of view. I am not the only person to notice this. Which brings me to the next bit. The claim that higher magnification makes a field of view narrower is not completely true. The field stop of the eyepiece is what defines the field of view size within the focal length of the optical instruments limits. This is why you can get higher power binoculars with wider fields of view than lower power binoculars. One other thing that can cause an image to shake are the weight of the binoculars and this is different for people.

But now, with ' NL Pure ' x10, not only i can see the bird with the bird house.... but also with the tree !!!! ; )

And I found after 3 years of yours comment

Sadly, Eagle Optic closed its doors December 2017.

Porro prisms are much better

Do you want something ?

100th comment

Very unhelpful. Thanks

so if your bird watching why would you want to see the tree

Who ever is seeing the video in the lockdown hit a like

We want language in hindi

This is such a perfect video to stumble upon after collecting my own research. The summation was supportive + straight to the point. Chefs Kiss! 🤌🏼 going to a concert + I was stuck between what an 8x -12x view would present

This thing is in Minecraft!

why that a stupid music behind

But how magnification works bro? I find nothing answer here

Nonsense you didn't explained all the 3 magnification numbers .

I have Binocular made in russia and its indicate in this body 99990x99990 how does far it means