Can you kindly explain what this chart is supposed to be used for? Cause I'm dumb and don't see a correlation between the numbers and the lines on that chart? Thanks in advance.USAF resolution chart attached, of someone wants one. These, and others, are still used in the laser or precision optic/lens industry.
The Arken scopes do not have a turret lock. They only have a zero stop.
None of my three SH-4 Gen II turrets lock. Neither does the turrets on my SH-4J that I just received. They do have a zero stop though.The sh4 gen2 have locking turrets. The x2 i just got lock .I love the scopes for the $
.The turrets are awesome, great scope for someone like me just starting out dialing.I ordered the new ep-8 for an ar i just finished .I will let you all know how it is.
Resolution Chart TestingCan you kindly explain what this chart is supposed to be used for? Thanks in advance.
Thanks so much!Resolution Chart Testing
A resolution chart is a picture that has periodic objects in it that can be used to check the quality of optics. An old and famous resolution chart is the USAF 1951 test target. This resolution test chart was developed by the US Air Force to test lenses used to take pictures from airplanes. The National Bureau of Standards (now known as NIST) had their own resolution chart, and ISO has a chart designated 12233 for testing of electronic still cameras.
There are several ways to use these charts. One way is to simply take a picture of them through the lens you’re trying to test. This works for lenses designed to image at finite conjugates (the distance from the lens to what it is aimed at is less than infinity). For infinite conjugate lenses, put the chart a the focus of a collimator and take a picture through the collimator. Or, for lenses designed for visual use, the lens is placed so that the target is at its rear focal plane and the inspector looks at the image (at infinity) formed by the lens.
The advantages of resolution chart testing are that it is inexpensive and insensitive to vibrations. Disadvantages include the challenge of deciding whether a certain target is resolved or not, a decision which must be made by looking at the image through a camera and assessing by eye.
For Your Use on Rifle Scopes
See the numbers down the left side, 2 through 6, and then 1 through 6 on the right side? Say like when comparing 2 scopes, can both read or resolve '#6' fine (from the right side) or do the 3 lines blur together on one of the scopes? So it is not a quantitative assessment, but really a relationship assessment, in that one optic might be clearer to read the 3-bar set '6' easier than the other.
I also find it particularly useful for determining and adding my own parallax marks on a scope adjustment knob, vs. the ones the Mfg'r put there. I just use a dot of white fingernail polish.
That is a great ideaI also find it particularly useful for determining and adding my own parallax marks on a scope adjustment knob, vs. the ones the Mfg'r put there. I just use a dot of white fingernail polish.
Light makes a huge difference in what you can see, one reason the better coatings make a difference, since they let more light through. So does good glass.At 50 yards with good sunlight, it looked good.
Thats why most of my testing/pictures are in lower light conditions. Tho ive found that bright light and white targets create their own issues.Light makes a huge difference in what you can see, one reason the better coatings make a difference, since they let more light through. So does good glass.
But yea, mediocre optics can look real good in great conditions.
Up here at 4K feet, we get a lot of sun. I remember when I was down shooting in Bay Minette on a partly cloudy day. It was like I was looking through a pair of sunglasses.Light makes a huge difference in what you can see, one reason the better coatings make a difference, since they let more light through. So does good glass.
But yea, mediocre optics can look real good in great conditions.
I agree. When I do bright full sun scope test, small print on power transformer 100 yards away is viewed for testing sharpness clarity.Light makes a huge difference in what you can see, one reason the better coatings make a difference, since they let more light through. So does good glass.
But yea, mediocre optics can look real good in great conditions.
Same here. To me true scope test is done in low light conditions and I always conduct low light test under dark shadows of tree shades at 100 yards before sunset and after sunset.Thats why most of my testing/pictures are in lower light conditions. Tho ive found that bright light and white targets create their own issues.
what's the weight on that one, nice useful power range to. Like the reticle,but still like the dot.Couple more images and another optic to consider.
Riton X5 Primal 3-18x44. Clarity and resolution a bit better than the Arkens IMO, not quite as bright as the EpL or Ep5 at rhe same powers, but also smaller. There is some fisheye on the edges, and a little blur.
Of note its going back for repair, reticle is shifting with the power ring.
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Reticle moving under zoom, images and return to poa is pretty good tho.
X5 Primal reticle shift.
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That goes with the territory, although I’m sure some are better than others. I have no complaints about the eyebox on my PST Gen II, and I hate a small eyebox.P.S. I forgot to add that this suffers from the same fatal flaw as my Vortex Viper HS, which is the Eye Box/relief is trash at mid to high magnification. If anyone knows of a scope that had a good eye box at high magnification I'd greatly appreciate it.
Ok, sounds like I need to find us a better scope wholesaler! Cause Chattanooga and Davidsons sell mainly either super expensive stuff or cheap junk with not much in-between. Like they dont sell Vortex or Arken. They sell Leopold.That goes with the territory, although I’m sure some are better than others. I have no complaints about the eyebox on my PST Gen II, and I hate a small eyebox.
The old HS was not nearly as good a scope.
Optics Planet?Ok, sounds like I need to find us a better scope wholesaler! Cause Chattanooga and Davidsons sell mainly either super expensive stuff or cheap junk with not much in-between. Like they dont sell Vortex or Arken. They sell Leopold.
Maybe I should try EuroOptic?