| www.technika.nu wrote:|
Please compare a high magnified scope with 50-56mm objective to a 8X.
You will fairly soon realize that you cannot see anything in the high magnified scope unless it's very good light outside.
Instead of arguing, try it.
Within optics people there is never meantioned the twilight factor as everyone knows from their own experince that it's just nonsence.
I agree, as the magnification increases, the FOV decreases and so the straw or peephole you look through to see reality is smaller because less light is now available to magnify.
Even though the power is higher, the amount of light "magnified" is less, so light transmission qualities get negated from having less light to work with.
If you've ever played with a camera, you will see as the telephoto increases power, so the F-stops change as less light enters the lens.
But I noticed by going to 50mm, you really increase weight and size.. the bino will also be taller to accommodate the larger lens's focal distance, so your short distance focus abilities will be less.
The short distance focal range of a 10 X 50 Swarovski was 16 feet, by dropping to a 42mm lens, it dropped to 8 feet.... maybe not a concern for long distance use only.
The only reason I see for going with 50mm is if you need the extra exit pupil for the magnification you feel you must have.... but if you can settle for less power
, you can keep the same exit pupil with a smaller mm lens and gain other advantages too, like more stability, FOV, and depth of field.
If you can't keep the image still because your power is too high, your brain will actually interpret less info anyway.
Edited by windstrings - November/27/2007 at 09:03