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    Curio 7x21 vs. CL 8x25 pocket

    My premise is not simplistic. In fact, it actually is pretty involved because I am saying it depends on how much difference there is in magnification between two binoculars versus how much difference there is in relative brightness or EP size. When comparing an 8x25 and 10x25, the magnification...
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    Curio 7x21 vs. CL 8x25 pocket

    A lot of times there are a lot of birds out in the morning and at dusk. I observe a lot of waterfowl and the best time to observe them are dawn and dusk, and sometimes I only have my pocket binocular with me because I carry them when walking my dog around the lake or by the river. Owl watchers...
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    Curio 7x21 vs. CL 8x25 pocket

    I know what the Twilight Factor is, and I know it is not an optical law, and using unrealistic binocular formats like a 20x25 or 40x25 to try to disprove it is an old trick that makes no sense because no 20x25 or 40x25 binoculars exists. There are two things to consider in a binocular in low...
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    Curio 7x21 vs. CL 8x25 pocket

    How so? The Twilight Factor of the 10x25 is 15.8 and the 8x25 is 14.1 so the 10x25 will show more detail in low light. The Twilight Factor of the 10x42 is 20.4 and the 8x56 is 21.1 so the 8x56 will show more detail in low light and because there is a big difference in EP the 8x56 will be much...
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    Curio 7x21 vs. CL 8x25 pocket

    Exactly. I am older than dirt, but my SLC 8x56 still seemed brighter than my my Conquest HD 10x56 in low light. I could see more detail with the 10x56, though.
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    Curio 7x21 vs. CL 8x25 pocket

    I have to disagree. My 8x42's and 10x42's gave up when the light started getting low, but my 8x56 just keeps performing even into almost complete darkness. With the 8x56, it is almost like they have a built-in light inside of them that illuminates the FOV. It is way more than 10 minutes...
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    Curio 7x21 vs. CL 8x25 pocket

    You will see more detail at 10m through a 2.5mm hole than you will through a 3.125mm hole at 12.5m in low light. Try it sometime. Compare how much detail you can see through a 8x25 versus a 10x25 in low light. Use something like a dollar bill that has a lot of detail on it and try and read it...
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    Curio 7x21 vs. CL 8x25 pocket

    It is not nonsense. I have compared many 7x21, 8x20, 8x25 and 10x25 pocket binoculars in low light and the 10x25 always wins. The 10x25 is much better in low light than the 8x25 because of the superior Twilight Factor. The higher magnification helps you see detail better, especially in low...
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    Curio 7x21 vs. CL 8x25 pocket

    Try a 10x25 pocket. They are a lot better in low light than a 7x21, 8x20 or 8x25. Miserable low light performance is a downfall of pockets, but the 10x25 because of its superior Twilight Factor of 16.0 performs significantly better at dawn and sunset. You can see much more detail.
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