Monday, September 29, 2014

EO Ranger and Vortex Diamondback: basic differences?

Hello EO,
Where are the Vortex Diamondback and Eagle Ranger 8x42 binoculars made?
What is the difference in these and the Eagle rangers? Would one be better than the other for hunting?


Hi Jim,
Thanks for your inquiry.

The difference between the Diamondback and the Ranger (which are both made in China) is glass quality. The Ranger will deliver more brightness and clarity, and is more lightweight. The new Ranger ED ($329.99)is a nice step up from the previous Ranger. ED (extra-low dispersion) glass is noticeably brighter and sharper to the edge than the non-ED Ranger.

For hunting I'd go with the best glass you can afford. The 8x42 is a good choice, whichever price level you choose to go with. In any case, you will have 30 days to try out the binocular after you receive shipment. We'll take it back and refund your money if you don't like it.

All the best,
Eagle Optics

Friday, September 26, 2014

Need binoculars for 6-year-old boys

Hi, Eagle Optics crew.

I have two young boys who need binoculars. I’ve been looking at the backyard birder kits you have, but had a question about specs that I can’t find answered anywhere: what is the minimum inter-pupillary distance (IPD) for the Vanguard Orros 8x32 binoculars? (For that matter, what’s the range of IPD adjustment?)

Both boys are young (6 years old) with relatively close set eyes, so it’s an important point for me to consider.


—Ben K.


Hi Ben,
Thanks for your inquiry.  The IPD on the 8x32 Orros is 57mm -74mm.  Depending on the kids, this may not go close enough.  If that's the case, check out this

The IPD on the Kingbird is 49mm - 72mmm

If there is anything else I can help you with, please let us know.

Best regards,
Eagle Optics

Wednesday, September 24, 2014

Are there eyepieces that will fit my older Kowa scope?

I have a Kowa TSN-2 77mm spotting scope that I bought in 1992. Is it possible to get a 20 - 60 zoom occular, or perhaps 30x wide angle eye piece for it? Do you sell eye pieces for scopes this old?



Dear Aves,
Thanks for your inquiry.  The current Kowa eyepieces listed for the 60/66/82SV will all fit your TSN-2. You have the choice of a zoom or 30x fixed magnification eyepiece:

If there is anything else we can help you with, please let us know.


Eagle Optics

Monday, September 22, 2014

Need objective lens covers for my Leupold Cascade 10x42

What tethered objective lens covers will fit my Leupold Cascade 10x42 binocular? What shipping method should I select to get them here (CO) for my trip in 10 days?




Hi Bob,
Thanks for your inquiry regarding tethered objective lens covers for your Leupold binocular.

Since we don’t carry the Cascade model, I can’t grab them for you to find the best fit. What you’ll need to determine is the outside diameter measurement of your binocular’s objective end of the barrel.  Here’s a handy video that will show you how to get that measurement:  

If it measures about 53mm, this would be a good choice: Vortex Tethered Objective Lens Covers (Medium).

We can ship them today if you order before 3:00 p.m. CST.  Priority Mail ($4.95) should get them to CO in time for your trip.

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

All the best,

Eagle Optics

Friday, September 19, 2014

Questions about the Kowa 25-60x Zoom Eyepiece

Question: I currently have the 30x wide eyepiece for my . I'm interested in the new 25-60 zoom eyepiece. 

Will this eyepiece work well for watching shorebirds on the bay/shores? Will this eyepiece work as well for digiscoping compared to my current 30x wide eyepiece? Is the 25-60x zoom a wide angle eyepiece?

Lisa P.

Dear Lisa,
The Kowa 77mm/88mm 25-60x Zoom Eyepiece has a more wide field of view than the other available zoom eyepiece for your scope—the Kowa 77mm/88mm 20-60x Zoom Eyepiece.  A lot of users find the 25-60x to be the better of the two. One review on our site put it this way:

“With the new eyepiece zoomed all the way to 60x the image is great. There is a wide, bright and very clear image that is leagues better than its predecessor. This proves very useful to birders because I can now zoom in all the way and still get great light and detail. The previous 20-60x was dark and not very good at 60x, but not the new eyepiece. I cannot recommend this eyepiece highly enough.

I spent a while using this in the late evening watching ducks and have never seen a better image in a spotting scope. Saw details on Ruddy Ducks that I have never seen before. I could see every feather, I could see water drops clinging to the feathers…the Kowa 88mm with the 25-60x wide angle zoom is as good as I have ever seen. It is a big improvement compared to the previous 20-60x eyepiece. It is $665 very well spent. If you own this scope and want to be blown away, buy it.”

I should add that with its present sale price of $565, it’s a great time to buy this eyepiece. As always, our 30-day return policy applies, so you’ll have ample time to try it out.

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

All the best,

Eagle Optics