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ATN LRF Binoculars 2000 and their "focus free" feature
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Picture of Mike_Dettorre
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Was researching the binos/LRFs and the description related to focus says "Fixed/Focus Free". I don't know how that would work. Called ATN could not get in touch with a knowledgeable person. Got a link to the manual, no method of focusing listed/identified and no other explanation.

Does anybody have any experience with these and what was the focus like? or can you explain how the "technology" works as I don't understand how anything can be in focus from 50 yards to 1000 yards. I didn't think it was physically possible to have optics in focus over large distance ranges. They specifically stated on the phone they weren't auto-focus.

Please refrain from telling me to buy leicas or whatever, or that they will be a POS, I already have a nice set of 10x42 leicas w/rf, I am trying to understand the technology. Thanks.


Mike



What I have learned on AR, since 2001:
1. The proper answer to: Where is the best place in town to get a steak dinner? is…You should go to Mel's Diner and get the fried chicken.
2. Big game animals can tell the difference between .015 of an inch in diameter, 15 grains of bullet weight, and 150 fps.
3. There is a difference in the performance of two identical projectiles launched at the same velocity if they came from different cartridges.
4. While a double rifle is the perfect DGR, every 375HH bolt gun needs to be modified to carry at least 5 down.
5. While a floor plate and detachable box magazine both use a mechanical latch, only the floor plate latch is reliable. Disregard the fact that every modern military rifle uses a detachable box magazine.
6. The Remington 700 is unreliable regardless of the fact it is the basis of the USMC M40 sniper rifle for 40+ years with no changes to the receiver or extractor and is the choice of more military and law enforcement sniper units than any other rifle.
7. PF actions are not suitable for a DGR and it is irrelevant that the M1, M14, M16, & AK47 which were designed for hunting men that can shoot back are all PF actions.
8. 95 deg F in Africa is different than 95 deg F in TX or CA and that is why you must worry about ammunition temperature in Africa (even though most safaris take place in winter) but not in TX or in CA.
9. The size of a ding in a gun's finish doesn't matter, what matters is whether it’s a safe ding or not.
10. 1 in a row is a trend, 2 in a row is statistically significant, and 3 in a row is an irrefutable fact.
11. Never buy a WSM or RCM cartridge for a safari rifle or your go to rifle in the USA because if they lose your ammo you can't find replacement ammo but don't worry 280 Rem, 338-06, 35 Whelen, and all Weatherby cartridges abound in Africa and back country stores.
12. A well hit animal can run 75 yds. in the open and suddenly drop with no initial blood trail, but the one I shot from 200 yds. away that ran 10 yds. and disappeared into a thicket and was not found was lost because the bullet penciled thru. I am 100% certain of this even though I have no physical evidence.
13. A 300 Win Mag is a 500 yard elk cartridge but a 308 Win is not a 300 yard elk cartridge even though the same bullet is travelling at the same velocity at those respective distances.
 
Posts: 10055 | Location: Loving retirement in Boise, ID | Registered: 16 December 2003Reply With Quote
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Picture of sambarman338
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What power are these binos, Mike? Many old 6x glasses only needed to be adjusted for the individual's eyesight, not changing distances. Keeping the focal length short may have been part of the secret.

I have an early military Nickel riflescope with no user-friendly focus adjustment. Maybe they they reasoned that if you could get into the post-war army your eyesight would be close enough to 20-20 to set the scopes for that.

But I don't suppose the makers of your binos would have taken that course. More likely they have devised some way of evaluating the user's eyesight and/or point of visual interest and robotically adjust the lenses to suit.

PS: I've finally googled ATN LRF binos and see they are another world altogether. If they use lasers to get distances, it may be the laser engagement 'guesses' what you're looking at . . .
 
Posts: 4952 | Location: Melbourne, Australia | Registered: 31 March 2009Reply With Quote
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Picture of Mike_Dettorre
posted Hide Post
They are 10x42.


Mike



What I have learned on AR, since 2001:
1. The proper answer to: Where is the best place in town to get a steak dinner? is…You should go to Mel's Diner and get the fried chicken.
2. Big game animals can tell the difference between .015 of an inch in diameter, 15 grains of bullet weight, and 150 fps.
3. There is a difference in the performance of two identical projectiles launched at the same velocity if they came from different cartridges.
4. While a double rifle is the perfect DGR, every 375HH bolt gun needs to be modified to carry at least 5 down.
5. While a floor plate and detachable box magazine both use a mechanical latch, only the floor plate latch is reliable. Disregard the fact that every modern military rifle uses a detachable box magazine.
6. The Remington 700 is unreliable regardless of the fact it is the basis of the USMC M40 sniper rifle for 40+ years with no changes to the receiver or extractor and is the choice of more military and law enforcement sniper units than any other rifle.
7. PF actions are not suitable for a DGR and it is irrelevant that the M1, M14, M16, & AK47 which were designed for hunting men that can shoot back are all PF actions.
8. 95 deg F in Africa is different than 95 deg F in TX or CA and that is why you must worry about ammunition temperature in Africa (even though most safaris take place in winter) but not in TX or in CA.
9. The size of a ding in a gun's finish doesn't matter, what matters is whether it’s a safe ding or not.
10. 1 in a row is a trend, 2 in a row is statistically significant, and 3 in a row is an irrefutable fact.
11. Never buy a WSM or RCM cartridge for a safari rifle or your go to rifle in the USA because if they lose your ammo you can't find replacement ammo but don't worry 280 Rem, 338-06, 35 Whelen, and all Weatherby cartridges abound in Africa and back country stores.
12. A well hit animal can run 75 yds. in the open and suddenly drop with no initial blood trail, but the one I shot from 200 yds. away that ran 10 yds. and disappeared into a thicket and was not found was lost because the bullet penciled thru. I am 100% certain of this even though I have no physical evidence.
13. A 300 Win Mag is a 500 yard elk cartridge but a 308 Win is not a 300 yard elk cartridge even though the same bullet is travelling at the same velocity at those respective distances.
 
Posts: 10055 | Location: Loving retirement in Boise, ID | Registered: 16 December 2003Reply With Quote
One of Us
Picture of sambarman338
posted Hide Post
Thanks Mike,
As you might guess, electronic optics other than cameras are beyond my interests, ethics and bank account Smiler
 
Posts: 4952 | Location: Melbourne, Australia | Registered: 31 March 2009Reply With Quote
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