clarity for me.
I;m a novice in terms of optics/precision shooting, so i just see what the experts online do/use.
On the optics talk forum, one of their guys uses a eye chart as one of his clarity tests for optics, so i did it to.
Put up an eye chart a 200 at silverdale and compared my vx3 to my S3 to my falcon. S3 was crystal clear and could read the majority of the eyechart, down to the 7th line, vx3 could read down to the 6th line, and the falcon wasnt even close in terms of clarity.
A fuzzy image at 20X is useless magnification imo.
This is the great way to compare clarity and resolution of scopes...... and if you are with someone that can read lines you can't, time to go see your optometrist. Unfortunately, one of the big problems with reading other shooters comparison is you have no idea what they actually can see. My eyes are corrected to a schnick better then 20/20.
I use a chimney at 1035yds. It is quite surprising at how many well regarded products don't really let you resolve the grout lines and brick edges at this distance - you just see a multi colour rectangle. The good ones let you see the texture on the bricks and the really good ones, let you see the texture in the grout lines when the light is good. To really separate the good from great, try to resolve an electrical outlet at that distance.... and yes, you can see the slots with the right glass.
Yes, mirage is going to obscure all optics so view when mirage is light to nil. And then compare when there is mirage... some optics see mirage better then others. Some dont like this... some demand this.
Reading license plates at over 500yds is another very easy test. I prefer to test at LR. I feel that the brain can fill in a bunch of detail on known objects at near distances... but I have no idea what that license plate should read in a far away parking lot. So this is a super easy test to do when shopping for optics.... just look several blocks away at parked cars... a tripod or rest is paramount. Car emblems and those "stick" family decals work great too.
Fine detail like straw grass or water splashing off rocks at over 2000yds is about as clear as my eyes are likely to ever be able to see. When you find glass that lets you see this without fuss, you know you are looking at some superb glass.
With the crappy dollar, costs of good optics have surged. If you truly want top tier clear, I don't see much under $2500 with $3500 to 6000 being where things are mighty fine. To my eyes, Tangent Theta and S&B top this list with the new gen NF Comp, Sightron SVSS, Vortex Razor GenII (if QC is where it should be), March not far behind. Are any of these "cheap", nope...
When you can see the curl of a shot paster at 1000yds (think 1/2" round sticker) at 40X, you have nice glass.
There are levels of acceptable clarity for shooting ie resolve target, be able to aim where you want and engage. Some brands offer this at reasonable pricing but the vast majority of consumer priced stuff is going to dissappoint when the mag increases.
There are a number of other cost cutting steps like edge distortion, low light effectiveness, control of flare, etc.
If all you want is the clarity to resolve a reasonable sized target at distance, there are some very good options... If you want to SEE at LR, bring money.
So decide if you are aiming or glassing when you look through your scope... invest accordingly.
YMMV
Jerry