Info on scope lenses, quality and pricing

I’m just posting this to share info as the article says it better than I can with diagrams. A high end top tier scope, in my opinion should be understood. In my non competitive life I don’t need anything much more than SWFA, Bushnell with Japanese glass of old or newer 4200/Elite, etc. I’m even happy with old Weaver, and common airgun scopes like Leapers, UTG, Accushot. I haven’t tried those Discovery scopes but I saw a lot of good reviews. IDK. 
I’m currently looking for older Leapers 1.25x4 illuminated red/green fine 9 mil reticle. The biggest fault I saw in that particular scope for my Sparrow pesting on low powered .177’s to 75 yards was the eyepiece threads were junk. To have it set meant a change in POI, as entire reticle would move. I wish manufacturers had blueprints of scopes. If I don’t see an eyepiece with 40tpi or etched glass I know I’m not gonna be moving that eyepiece. 
Some of these things are what makes a newbie to airguns give up or say junk can’t shoot well, start moving the turrets. Oh my. Add scope creep, hold sensitivity, pellet variations, wind, etc. it may just be user adjusting the eyepiece or magnification that gets them to call it quits. 
Hope this helps someone & please any experience or thoughts on affordable scopes that range well from 10-100 like FT or ones that will focus and tell ya if your targets at 300 or 310, without a laser, please share.


https://www.targettamers.com/guides/apochromatic-lenses/
 
The best policy is to spend a decent amount money on a good scope, how much? as much as you can afford or maybe stretch that budget some!

I've only been unhappy once with an expensive scope, I just got a lemon because I bought an off brand. I sent it back to the Co and they fixed it for free, luckily I bought it used and sold it for only a slight loss. 

The bad thing is once a guy has tasted awesome top tier scopes it's very hard to go back, but sometimes one must make do!

May I suggest you look at the Athlon Talos BTR 1-4, it's a decent cheap scope with a super well done reticle. Shop around because you can get them for less than MAP price. I'm going to buy one for my 350 Legend AR.


 
I have 2 UTG true hunters with AO on air rifles. They both had movement in the eye pieces which allowed poi shift. After securing with o rings they hold zero and track as well as my Leupolds and the turret adjustments are crisper. I also like the mill dot reticle and there is absolutely no comparison in the eye box. The Leapers beats my Leupolds hands down. The glass is clear on the UTG's as well. Now will the UTG's adjust parallax out to 400 yards and still keep a perfectly clear field of view like the Loopy? Nope. But then my air gun shooting is far short of 400 yards too. Understand I have no problem paying more for a scope if needed but shooting target and pests at 70 yards or less just doesn't require a high end scope and honestly I prefer my Leapers over my Leupolds for air gunning if for no other reason than the mil dot reticle. Just the same way my UTG scopes work better on my air guns than my Leupolds I would never even consider a UTG on the rifles that are saddled with Leupolds.