Wednesday, December 30, 2015

Avoid binocular damage made by metal rings

I recently got a harness strap for my binoculars. I tried to attach the harness to the binocular with the plastic clip, but the clip was too thick and wouldn't fit on to the side slots of the binocular. I did have to add two metal circles to the handles so that I could attach my bin harness. Is this normal?



Hi Pamela,
Thanks for your inquiry. 

We don’t advise attaching a metal ring directly to the binocular eyelets. The metal ring acts as a tiny saw and will eventually wear through the eyelet and break it completely—our repair department sees a lot of this sort of damage, unfortunately.  So instead, first attach a plastic zip-tie to the binocular eyelet, and put the metal ring on it. The zip-tie acts as a buffer and won’t damage the binocular as metal-on-metal would.
You can also get this connector, which some people prefer:   Vortex Binocular Harness Strap Connectors (Set of 2)

These connectors are included with the Eagle Optics Bino System Harness Strap, but they can also be purchased separately.

Just trying to help you prevent unwanted damage to your binocular! If you have any questions, please let us know.
Best regards,
Eagle Optics

Monday, December 28, 2015

How to attach a rainguard to a harness strap?

I was given a harness (purchased from Bird Watchers Digest) for Christmas and cannot figure out how to attach it to the bins.

The bin's neck strap is threaded through the raingaurd's rubber hook which secures it when lifted off for viewing. Removing the neck strap to attach the harness leaves the rainguard completely loose. How do I then secure the rainguard?

Thank you for any advice you can offer.



Hi Annette,
I don't know of any harness strap that has a separate attachment for the rainguard. 

Some use a string or zip tie to attach it. It just takes a little ingenuity. Many birders don't attach it at all, as they don't like the rainguard hanging near their face while viewing through the binocular. Our repair department would discourage this practice, however!

All the best,

Eagle Optics

Wednesday, November 18, 2015

Vanguard Endeavor ED vs. Endeavor ED II

I’m looking at both the   and the . I can’t seem to find a justification in the price difference of approx. $150.00.  Can you tell me what the ED II has that the ED doesn’t?


Stephen B.


HI Stephen,
Thanks for your inquiry.  Most all the specifications between these two models are identical.  They are essentially the same binocular with the ED II using higher grade optical components such as lens coatings, glass, and prisms.  

I pulled both models from our display cabinet just now so I could draw a comparison between the two. The ED II is both a sharper binocular (resolves images better) and provides a brighter image. I was conducting this comparison indoors in a relatively low-light area here in our showroom.  Under ideal lighting conditions, the differences between these two models would certainly be more subtle. 

Is it worth the $150 price difference?  That would be hard to answer on someone else's behalf.  Much would depend on what sort of conditions you would be using the binoculars in and what your expectations are.  I would say that the optical performance between the two is readily noticeable and you don't have to be an optics expert to detect it.

If you would like to compare them yourself, you are welcome to purchase both and then ship one back after comparing them for a full refund.

If you have more questions or if there is anything else we can help you with, just let me know.

Best regards,

Eagle Optics

Tuesday, November 10, 2015

Looking to digiscope with a Kowa scope

I currently own a Kowa 77 angled scope with the extra wide 25-60 eyepiece. It is currently being used with a Promaster carbon fiber travel tripod. I also at times bring out my Nikon D7100 with a 300mm plus 2X to take photos. Its all becoming a big pain lugging all this with me. 

I was looking into digiscoping on your website and I find it a bit confusing. Does Kowa or anyone else make an adapter where you can mount a digital point and shoot to the front lens and also be able to just move it out of the way when viewing through the scope? And what would one look for in a point and shoot? Thank you so much. I really love your tutorials.



 Hi Stan,
Thanks for your e-mail!
For digiscoping, you can use a point and shoot camera with an optical zoom of 4x or less. You would need this adapter: Kowa DA10 Digital Camera Adapter 

If you want to save even more weight in the field, you can use your smart phone for digiscoping. This one holds an iPhone, and Kowa makes this bracket for the iPhone 4, 5, and 6:  Kowa TSN IP4S iPhone 4/4S Digiscoping Bracket

The simplicity of using a smart phone for digiscoping is amazing--and the quality of the photos is excellent.  If you have an android phone, you can buy an adapter through

Please call us if you have any questions. 800-289-1132.

All the best,

Eagle Optics

Friday, October 30, 2015

Will the Kowa Extender fit my older Kowa scope?


Will the new Kowa 1.6 Eyepiece Extender for TSN 88/77 work on the Kowa 824 scope?  I don't know if Kowa changed eyepiece mounts or not since the 824.

If the eyepiece mounts are the same, will work?


Skip A.

Hi Skip,

Thank you for your email.  Unfortunately the new eyepiece extender is not compatible with the TSN-824 scope and will only be compatible with the TSN-770 and TSN-880 Series scopes.  The TSN-820 Series mounts are a bit smaller than the 770/880 scopes.  Please let me know if you have any other questions.

Best regards, 

Eagle Optics

Saturday, October 17, 2015

Binocular specs are comparable--why is one more expensive?

The specs of the  seem to be almost identical to the .

I wanted to buy the Viper 8x32 the first time I looked through it but didn't have the $600 for it then.

If the Ranger ED 8x32 is the same optically, its a much better price.

Please confirm.



Dear Tim,
Thanks for your inquiry. The Viper and Ranger are different optically, even though the specs (on paper) are similar. Optical quality is something that is reflected—usually by price, but certainly by performance, which is something that has to be seen to be appreciated.

The Ranger (China) has been one of our best sellers for 20-some years.  The Viper (Japan) will have better resolution—brighter, sharper to the edge with better lens coatings and less chromatic aberration. Its build quality and internal parts are also of higher quality than the Ranger.  However, I will say that the latest generation of the Ranger, the current Ranger ED, is closer than ever in optical quality to the Viper. It’s one of the great values in binoculars in its price range.

This short video will help you understand how optical quality affects what you see.
If you have any questions, please let us know.

All the best,

Eagle Optics

Thursday, October 15, 2015

Is the Leica Trinovid binocular still in production?

Good Afternoon,
I'm shopping for a pair of  Leica Trinovid 10x42 binoculars. I thought I saw them on sale on your site within the last couple days, butI do not see them at all now. Is Leica no longer making them, or are you just not carrying them anymore? And if that is the case, that is comparable in terms of price and quality?

Dear Jacob,
Thanks for your inquiry about the Leica Trinovid binocular. Leica is discontinuing this model and will not be making them anymore. The closest models to it would be either the , or .

If you need more detailed information about any of these binocular models, just give us a call at 800-289-1132.


Eagle Optics

Sunday, October 11, 2015

Does Eagle Optics have a store in MA?

Question: I plan to buy my wife a high set of binoculars for distant birding. I'd prefer to have her try out the various types but do not know of a store that carries the good stuff in stock. I live in Pelham, MA, the western part of the state. 
Thank you !! 

Dear Steve,
Thanks so much for your inquiry! 

We only have one store location (in southern Wisconsin), but we'll be happy to recommend birding binoculars over the phone, according to your budget. Our sales staff of 8 is comprised of birders of varying degrees of expertise. 

Even if you can narrow it down to 2 binocular choices, you could buy both, let her try and compare them, and send back the one she doesn’t want.  We do have a 30-Day Return Policy, so your wife would have plenty of time to try out the binocular(s) at her favorite birding spots in your home area.

Let me know if we can be of further assistance to you.

All the best,

Eagle Optics

Friday, October 9, 2015

Need a sturdy tripod for digiscoping

 Looking for a tripod for my Zeiss DiaScope 65 (Angled)...too much shake with my present one...I am using a point and shoot ..(if you need my height I am 5'8") I watched your tripod video. Thanks for the help. 

Deno B.
Titusville, FL

Dear Deno,
You didn’t mention which tripod you’re using now, or what your budget is for a new tripod. But for stability and less vibration, you may want to consider a carbon fiber tripod. It’s more lightweight than aluminum, but it has vibration-dampening properties that aluminum doesn’t have. Therefore many digiscopers prefer carbon fiber.

Here are some recommendations:
Vanguard Abeo 283CV Carbon Tripod Kit  This tripod may be taller that what you’d need for your height, but the legs have a greater circumference, so the tripod is more solid than the Vanguard Abeo 243CV Carbon Tripod Kit.

Swarovski has very nice tripods: Swarovski AT 101 Aluminum Tripod with DH 101 Head . I’d highly recommend the carbon version, but it is $200 more: Swarovski CT 101 Carbon Tripod with DH 101 Head.

Your scope and your digiscoped pics are only as good as your tripod! Be prepared to make an investment—but it will be worth it.

All the best,

Eagle Optics

Wednesday, October 7, 2015

My dog chewed up my binocular neck strap!

Last year I ordered a pair of Eagle Optic Rangers 8 X 42's.  They are excellent!  Way better than my more expensive Steiners.  Unfortunately, my dog chewed through the neck strap.  How may I purchase another strap.  Fortunately, he didn't chew on the binoculars.  If he had, I'd be ordering a new dog.

Thank you,


Dear Marsha,
Your e-mail gave me a good chuckle! I can see how that padded neoprene neck strap would feel good on doggy teeth and gums! You'll want to order the  to replace it. 

And just so you know, if he HAD chewed the binocular itself (also delicious), the Eagle Optics warranty would cover the repair at no charge.

Thanks for being our customer!

All the best,

Eagle Optics

Monday, October 5, 2015

Which image-stabilized binocular for fishing boat?

I want stabilized marine grade binoculars for spotting birds while fishing What units would you suggest ?

Sent from my iPad

Dear Jay,
Thanks for your inquiry.

You didn't mention your budget for a binocular, but image stabilized binoculars are significantly more expensive than non-image stabilized ones.  We have a large selection of Canon image-stabilized binoculars that you can browse through here. It would be helpful to know that of the Canon binoculars we carry, the only one that is waterproof is the Canon Image Stabilized 10x42 LWP Binocular

If  you don't want to spend that much, a good alternative would be to shop for a low-magnification binocular, which is easier to hold steady on the water, as in your fishing boat.  A good low magnification (6x or 7x), waterproof binocular would let you spot birds while giving you peace of mind that getting it wet won't ruin it! Here are a few suggestions between $300-600:

You can try your purchase for an entire month with our 30-Day Return Policy

If I may be of further assistance, please let me know.

All the best,

Eagle Optics

Saturday, October 3, 2015

Binocular for spotting the night sky

I'm an amateur astronomer, and I'm looking for a relatively inexpensive binocular I can use to scan the sky. I've heard Fujinon binoculars are popular for night sky viewing, but I don't want to spend $500+.  I do most of my viewing with a telescope, but a binocular will help me scan to find things I want to look at more closely with the telescope.
Here are my parameters:
Cost around $200
Wide field of view (400+ ft./1000 yds).
Good eye relief
No heavier than 25 oz.
What can you suggest?



Dear Michael,
Thanks for your inquiry.
One binocular that comes to mind in that price range is the 

Here are the specs:
Field of View; 426 feet/1000 yards
Eye Relief; 17 mm
Close Focus: 6.5 feet
Weight: 23.1 ounces
Dimensions (H x W): 5 x 4.9 inches
Weatherproofing: Waterproof/Fogproof

Remember, you can try it for a month with our 30-Day Return Policy.  If you have any questions, please let me know.

All the best,

Eagle Optics

Monday, September 28, 2015

Comparing Denali and Ranger binoculars

We are considering the  vs the  and are wondering what is the major difference between the two, since there is quite a price difference. We noted the Ranger is ED and the Denali is not; what difference will that make in our viewing? We are looking for a good quality binocular to use for scenery and wildlife viewing. Also we do both wear eyeglasses. Also do these include flip lens covers and a comfortable strap? 

Thank you for any help.


Hi Pam,
Thanks for your inquiry.  The Denali and Ranger share many of the same features.  Both are waterproof, work well with eyeglasses, and will come with a similar set of accessories which include a nice neoprene neck strap and tethered lens covers which attach to the front barrel of the binocular. 
The difference between the two models, in a general sense, is the quality.  

The Ranger ED is a higher quality binocular both in terms of the build quality and mechanics (higher quality parts/materials) as well as the optical system.  The Ranger will be a noticeably sharper binocular, providing a higher level of visible detail than the Denali binoculars.  The Ranger will also have better light transmission, so it will present a brighter and more colorful image to the user.  This is aided by the use of ED (extra-low dispersion) glass as well as the various optical coatings on the lenses and prisms.
The Ranger ED is one of the nicer mid-priced binoculars.  When we look at all the binocular offerings, starting under $100 and going all the way up to $2500, some of the best optics for the money come around the $300-$400 price range.  If the Ranger is within your budget, you’ll end up getting a noticeably nicer binocular that most avid optics users would never feel compelled to upgrade from.

If you have any other questions, just let me know.

Best regards,

Eagle Optics

Friday, September 11, 2015

Considering Vortex Viper scope for elk hunt

Dear Eagle Optics,
I'm looking at purchasing a new spotting scope for this year's hunting season. I was looking at the Vortex Viper HD 20-60x80 Angled Spotting Scope, but after reading some reviews, I'm unsure if it will fit my needs. 

Question is: what would be your recommendation for a good back-country spotting scope in that price range? I mostly hunt elk and the furthest shot I would probably take is about the 500-yd. range. I basically need to be able to count the antler points at that distance.



Dear Matt,
Thanks for your inquiry.

We decided to test the Viper for you here at the store. With a rangefinder, we determined a distant tree on a hill that was 500 yards away. We could easily see the shape of the leaves and details of some branches; we noted 2 birds in the treetop. In our opinion the Viper has excellent quality (and unbeatable warranty) for under $1K. The Viper is a solid scope in its price range and is one we recommend often.

In a slightly higher price point, you could consider:

If I may be of further assistance, don't hesitate to ask.

All the best,

Eagle Optics

Wednesday, September 9, 2015

Need scope for digiscoping in Yellowstone

I am looking to purchase a spotting scope for wildlife viewing when I travel to Yellowstone.  I would also like to use the scope as a digiscope with a digital camera.  I am looking at the Vortex Razor HD 20-60x85 Angled Spotting Scope that you have advertised on your web page.  What type/brand of digital camera and adapter would you recommend with this scope?  Also, do you know when you might have these scopes back in stock? 

Thank you for your help.

Cristen R.

Dear Cristen,
Thanks so much for your inquiry.

The  Razor scope should be back in stock in early October. If you’d like, I can call or e-mail you when it comes in.

I really like the Razor scope. The optical quality, combined with the no-fault, lifetime warranty, make it a superb value.  If you have an iPhone 4, 5, or 6, the Kowa iPhone adapter would be an excellent and low-cost way to take digiscoped photos on your trip. And it fits the eyepiece of the Razor!

 Kowa TSN IP4S iPhone 4/4S Digiscoping Bracket $60.  (see short video under the “Media” tab)

Similarly, these Phoneskope iPhone adapters are made to fit the Vortex Razor scope.

If you choose to use a point-and-shoot camera, it doesn’t need to be an expensive one, but it needs to have an optical zoom of 4x or less to work for digiscoping. You can also use a DSLR. These videos will help show how these work with the Vortex Razor HD 20-60x85 Angled Spotting Scope:

If you have more questions, please ask!

All the best,

Eagle Optics

Friday, September 4, 2015

Diopter adjustment advice needed

 I bought my wife a pair of  Eagle Optics Kingbird 8.5 x 32 binoculars for a present and we got them today. When she tried to adjust the right diopter to get both eyes focused, she ran out of adjusting room. That is, she turned the diopter all the way to the end and it still wasn't enough. 

I tried and had to adjust nearly to the end even though I don't have to adjust most binoculars or else I use them with the adjustment very near zero. Also, she has not had this problem with other binoculars. Is this a particular problem with this model? Is it possible that our binoculars are defective? Is there a way to get additional adjusting room? 



Hi David,

Thanks for the note!

It’s possible that the diopter is defective or mis-calibrated.

Here’s something you can try to make that determination:

With someone who has the same vision in both eyes, or wears glasses or contact lenses: ZERO the diopter (match the little triangle on the diopter ring to the dot between the white “+” and “-“). When looking through the binoculars, BOTH barrels should be in focus – there should not be a differential or offset required. If this is not the case, then the diopter is definitely defective.

Best regards,

Eagle Optics

Wednesday, August 26, 2015

How do I get sand out of my binocular eyecups?

Have a question about cleaning them my new Eagle Optics Ranger ED binocular.  Yesterday I went on a bird survey on a long sandy beach which took over nine hours.  Part of the survey is examining dead birds which means sitting down on a log or the sand.  I am wearing them on a harness but still I managed to cover the end you look through (can't remember what you call each end) with sticky sand.
The eyecup was extended all the way out and there was sand stuck in the grooves. Took me a long time to clean it all out - well, I think it's all out now though I sometimes hear the cracking of sand as I move the eye relief around.  

I used the brush end of a lens pen, a microfiber cloth and blew on them.  Hesitated to use canned air in case I pushed the sand further in, also thought about dunking the ends in warm soapy water to try and float it off but I wanted to check with you to see what your recommendations are for cleaning sand off as I am sure this will happen again on a regular basis.

Any advice would be welcome.


Dear Carol,
Thanks for writing! You’re talking about the ocular lenses. I would use the canned air. Not water.  Also, you might want to keep the ocular lenses covered with the  as often as possible when on the beach. Keep them tethered to your neck strap, and get in the habit of putting it over the lenses whenever you’re not viewing through the binocular.

Sand is a bugger on binocular lenses and under eyecups.  If you can’t get it out satisfactorily this time, you’ll have to send them here for cleaning—with the Eagle Optics warranty, there is no charge for this service. Be warned though, it would mean you’ll be without your binocular for 2-3 weeks. Maybe once you’ve had to endure being without your binocular that long, you’ll opt to use the rainguard more diligently.

All the best,

Eagle Optics

Friday, August 14, 2015

Need binocular with good close focus and narrow IPD

Hi folks, 
I am looking for a new pair of binocs for birding and close-focusing on insects.  My husband's (Eagle Optics Ranger) focus to 3 feet, so I'd like something similar: waterproof, lightweight, etc.  My problem is that my eyes are close together.  I don't see any information in the specs on your web page about the interpupillary distance.  What is it for the Vortex Viper HD  8 X 32?

My Nikon, not roof prism, is about 55mm for that interpup. distance.

Thanks a lot,

Kitti R.


Thanks for your inquiry.  The IPD on the 8x32 Viper HD is 58mm.  Depending on what exactly you need, this may be a bit too big. It’s hard to find a roof-prism model with a narrower IPD.  The offerings are limited but I have a few suggestions that may work:

8x32 Zeiss Conquest HD: 53mm IPD and close focus of 4.2 feet.

Atlas Intrepid ED 7x36: 54mm IPD and close focus of 5’

Opticron Verano 8x32: 55mm IPD and close focus of 4.9’

The Verano is very similar to the Viper HD while the Zeiss Conquest is certainly a bit of an upgrade.  The Intrepid is a less expensive alternative with a narrower IPD.

If you have any other questions or if I can help you further, please let me know.

Best regards,

Eagle Optics 

Will an Opticron eyepiece fit my Kowa scope?

Dear Informed Staff,
I currently have a Kowa TS612 scope with a 27x wide lens. Since this is a fine lightweight scope I would like to take it into the field more often. I would like to add a zoom lens. Many birding forums have suggested the Opticron HDF 20-60x zoom. It appears that it screws into the lens cover on the 612. Do you know if the Opticron that you are selling does this?

Also, can you suggest a lightweight tripod for the scope? The tripod would need to fold down to 26" in order to fit into my suitcase, but extend to at least 60" for scoping since the 612 is a straight angle scope and I am 5' 11".Your advice will be appreciated.

Ron Becker

Hi Ron,
Thanks for your inquiry.  I don't have a Kowa 612 available to test the fit of the Opticron zoom eyepiece, so I'm sorry to say I can't confirm this for you.  Your email is the first I've heard about this possible adaptability.  It's unusual but not unheard of for scope bodies and eyepieces from two different manufacturers to be compatible. 
Regarding a tripod, I would recommend the Manfrotto 190 Go tripod legs:
The recommended tripod head for this would be the Manfrotto 128RC:

If there is anything else we can help you with, just let me know.

Best regards,

Eagle Optics

Thursday, August 6, 2015

What eyepiece comes with a Kowa TSN 82SV?

Hi EO Team,
I am planning to order the Kowa TSN 82SV 82mm Angled Spotting Scope.   Does the 25x extended eye relief come with this scope?  If not how would I get one? 



Dear Jerry,
Thanks for your inquiry. With Kowa, the scope body and eyepiece are sold separately. However, the Kowa 60/66/82SVmm Scope 25x Long Eye Relief Eyepiece can be ordered and will fit the Kowa TSN 82SV 82mm Angled Spotting Scope.

If I may be of further assistance, please let me know.

All the best,

Eagle Optics

Tuesday, August 4, 2015

Need a small binocular with good close focus

I'll be going on a nature-related trip soon and need a lightweight binocular for viewing birds and wildlife, and with a good close focus for insect and butterfly watching. What can you suggest?



Dear Nan,
Thanks for your inquiry.

In regard to a small binocular with a good close focus, you could consider, in order of optical quality:

Pentax Papilio II 6.5x21 Binocular This binocular is known for having the best close focus of 18".

Kowa BD 8x25 Binocular (Green) (6 ft. close focus) A very nice compact binocular. Good value. 

Eagle Optics Ranger ED 8x32 Binocular  (4 ft. close focus) Sharp and bright, with ED glass, and better light gathering with the 32 mm objective lens. No fault warranty, too.

If you have any questions, don't hesitate to call.

All the best,

Eagle Optics

Friday, July 24, 2015

What current model compares the the discontinued Vortex Fury?

Question: My wife has a pair of Vortex Fury 8X42. I really like them and was going to buy the same but note that they are discontinued. What is the equivalent? I like the 5 foot close focus possibility.Also, I prefer eyecups that twist up and down like the Fury's did.




Dear Gary,
Thanks so much for your inquiry. It’s true that the Fury is discontinued, and has been for a few years. I’d say the current equivalent would be between these two models:

Vortex Diamondback 8x42 Binocular ($219.99) Close focus 4.5’

Eagle Optics Ranger ED 8x42 Binocular ($329.99) close focus 5.2’

The image through the Ranger will be noticeably brighter and sharper than the Diamondback, but physically, the Diamondback looks more like the Fury did, and is a couple ounces heavier than the Ranger.  I suppose the decision will rest with your budget, though. Both have no-fault warranties, and both have twist-up eyecups.

If you click on the “media” tab on the product page, we have a 1-minute video showing the features of each of the binoculars, including the eyecup mechanism. Click on the above links to view each of the binoculars and their videos.

If I may be of further assistance, please let me know.

Yours truly,

Eagle Optics

Monday, July 20, 2015

Want to use the Sony Alpha 6000 for digiscoping


I have a Swarovski 65mm ATS spotting scope. I am wanting to use the Swarovski TLS - APO Digital Camera Adapter for ATM/ATS/STM/STS for pictures. Do you know if it is compatible with a Sony Alpha 6000 mirrorless camera?

Jeff M.


Hi Jeff,
Thanks for your inquiry. Swarovski TLS - APO Digital Camera Adapter for ATM/ATS/STM/STS works well with most small-bodied point-and-shoot cameras with a low optical zoom (4x or less). So I would think it’d work with the Sony Alpha 6000. Mirrorless cameras often work with either of the two Swarovski adapters.  With the Swarovski TLS - APO Digital Camera Adapter for ATM/ATS/STM/STS , you would also need the Swarovski T2 Adapter Ring (Sony) plus an E mount T ring which we don’t carry, but you could find online or at a camera store.

Our 30-day return policy enables you a generous amount of time to try either of the adapters.

If you have any questions, don’t hesitate to ask.

All the best,

Eagle Optics

Tuesday, July 14, 2015

Can the Vanguard Endeavor binocular be mounted to a tripod?

Does the  have a tripod mount?

Thank you,


Dear George,
Yes, the Endeavor has a 1/4"x 20 threaded hole in the front of the hinge.  To mount the binocular to a tripod, you would need the Vortex Binocular Tripod Adapter or similar adapter.

All the best,

Eagle Optics

Friday, July 10, 2015

Needing upgrade advice

I am looking for a good piece of glass  for birding, preferably 10x42.  I have been in the field as an observer for ten years and have used both Nikon and Vortex.  

I think keeping it under $500 is a good idea, as we don’t tend to make too much money in the environmental education field, but I would be willing to spend more if it’s a deal I just can’t say no to.
I would be very happy with the EO Ranger ED, but I have been in the game so long that I would appreciate a significant upgrade from my Monarchs.  So, I am willing to spend money on a solid piece of glass, but I don’t have much.

Anything EO is willing to do is very appreciated.

Enjoy the long summer days,

Joshua T.


Hi Joshua,

The challenge is finding a binocular that represents a “significant upgrade” from the Nikon Monarch around $500.00. Do you know which generation of Nikon Monarch? Which Vortex binocular have you used? 

Truth be told, some of our staff see little difference between the New Ranger ED 10x42 ($339.99) compared with the Vortex Viper HD 10x42 ($599.99). Depending on the Nikon Monarch model you have, I’m not sure either of these binoculars would represent a “significant upgrade.” 

On the other hand, something like the MeoptaMeoPro HD 10x42 ($899.99) would, in my mind, represent such an upgrade. But then the question becomes are you willing to pay that much for what I define as the upgrade I think you’re looking for? Another $200 or $300 doesn’t really buy the end-user much in terms of optical performance, but this is a somewhat subjective position based on my experience in looking at optics every day. 

I might ask how much of a “wow” factor are you looking for, but that’s also difficult to ascertain via words. Having said all of that, the New Ranger ED is an excellent choice.


Eagle Optics

Monday, June 22, 2015

Digiscoping adapter questions for my Vortex Razor scope

I purchased the Vortex Razor HD 16-48x65 Angled Spotting Scope last year. I am interested in purchasing an attachment for my  to allow me to digiscope with it. 

On your web site it appeared that you had an adapter that was suitable for this camera.  I wanted to check with you before I ordered the adapter. 

Also, I have also read  that there is a digiscoping adapter for iPhones.  I have iPhone 6 -- do you sell these adapters?  Do you know that they can provide good pictures?




Dear Jeri,
Thanks so much for your inquiry.

For digiscoping, a point-and-shoot camera needs to have an optical zoom of 4x or less. While I'm not familiar with your Canon Powershot, I looked its specs up online, and it has an optical zoom of 30x. While it might be a fine camera, it will not work for digiscoping, unfortunately.

The iPhone 6 will take amazing photos! It is great for digiscoping. You have two choices for iPhone 6 adapters that I am aware of. First is the Kowa TSN IP6 iPhone 6 Digiscoping Bracket which will fit your Razor.  The second is to go to Phoneskope also makes an iPhone 6 adapter that will fit the Razor scope.

If you have any other questions, please don't hesitate to ask.

All the best,

Eagle Optics

Friday, June 19, 2015

What differences will I see in a 8x42 and an 8x50 binocular?

If I'm considering a 8x42 binocular and an 8x50, what differences would I be seeing between the two sizes in terms of optical quality?


Jim K.


Hi Jim,

Thank you for writing and for your interest in Eagle Optics!

Imagine you have two binoculars with the exact same glass quality and optical coatings, but one is an 8x42 and the other is an 8x50. Let’s say your pupillary opening just happens to be 3.5 mm in the particular lighting situation you’re in. As such, you will not be utilizing the full exit pupil of either binocular (5.25 mm & 6.25 mm respectively). 

At first it might seem that there would be no difference in image quality between these two binoculars, but that would be an error. Not only does aperture increase brightness (when your pupillary opening can receive it), but it also improves resolution regardless of pupillary diameter. Thus, the 8x50 in this example will render slightly more detail because the 3.5mm exit pupil you are taking into your eye is comprised of more photons of light: resolution is a function of aperture size.

Please let me know if there is anything else I can do for you.


Eagle Optics