Scope lab test
Swedish magazine Vapentidningen no 6/2004 has printed a consumer lab test for riflescopes suitable for hunting at dusk/dawn.
Their conclusion is that the German/Austrian scopes are by far the best, but the leap from the cheaper US scopes are smaller today than it was at the last test 7 years ago.
Aerotech Telub lab did the scientific testing using spektrofotometers, broad spectral lamps and kolliminators.
The scopes were tested for field of sight, eye relief, "tube effect", ergonomy, click adjustment accuracy, impact change with change of magnification, sharpness and contrast, light transmission, reflexes, twilight performance.
Test result (some of it)
B resolution (max 10)
C colour & contrast (max 10)
D anti-reflex (max 5+5)
E light transmission (max 10)
F twilight performance (max 10)
G overall test result (including all test results, not just the ones I've printed. Max possible 78)
Remember, this is a lab test, not some testers subjective opinion.
Pity that this test did not include any better Japanese glass.
I am impressed with the results of the Burris. It does agree with what I have seen with this inexpensive scope. You get a lot for your money. The scope performs where it matters: resolutions, and light transmission. Not sure how you can a 9 in light transmission then a 7 in twilight performance????
This test again highlights that Luppies are really behind the curve. The VXIII is considered high end. Not so according to these results.
Pretty easy to conclude that German/Austrian glass is tops when only moderate to low NA scopes were compared, no Japanese products, and almost all the scopes are German/Austrian/Swiss.
Were there more scopes in this survey?
Sort of like saying that a pushrod V8 won the Nextel cup. Really...
I guess they borrowed their scopes from the engros dealers, and the scopes tested are those the dealers want to sell.
I sure would've liked to see more Leo series, Nikons, Leicas and the Zeiss Conquests tested.
And I'm GUESSING that light transmission and twilight performance is different because the wavelenght of the light changes as you get a slightly different spectrum in low light. Again, I'm GUESSING, any correction is welcome.
The same magazine did a test of about 6-24x scopes about half a year ago, but they didn't use a science lab for that test. However, the brands stocked up basically the same way as in this test with the Swaros and Zeiss' at the top.
Without knowing what they measured and how, the twilight factor is not relevant.
Many scope and binocular manufacturers use a twilight factor that is a mathematical measure of objective lense ratio to magnification. Basically, a worthless measurement as any optic with the same obj and mag has the same twilight factor.
Doesn't take into account coatings, lense quality, etc. Unless you can say for sure, that may be where this is coming from.
Light transmission is a measure of all wavelengths in normal 'white' light. With the right meter, you are comparing the difference between entry and exit light.
If an optical device has near 100% light transmission, it will have better low light performance then an optical device with lower light transmission. We don't see in the infra red, so that is of little interest.
Look at the S&B Zenith. Rated with a 7 for light transmission (assume that is measured) but a 9 for twilight factor. My guess is this is a large objective scope.
The burris has a 10 for light tranmission but only a 7 for twilight factor. Doesn't make any sense.
The only results that have any value to me are the resolution (how you measure that is beyond me), anti-reflection (assume a measure of flare), and light tranmission.
Colour and contrast don't really matter as we are not 'glassing' with a scope and really don't care of our deer looks perfectly grey brown or just brown. We just need to be able to see it.
The twilight factor is probably not a measured rating so subjective thus worthless.
The overall test result is also worthless without knowing what else was being tested and how they were weighted in the final result.
Without the test parameters, levels of error and methodology of the tests, we could be still reading a subjective study of products most likey to sell in someone's store.
Sorry, to come across as a poison pill but I feel that any review or comparison posted here should give all reading accurate info.
I am glad that the Burris rated higher then just about all the scopes in light transmission and resolution. Goes to show that you don't need to spend enormous amounts of funds to get a good quality product.