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[email protected] I think you're mixing 8x28 and 8x32 Diamondback. My comment was about the 8x32. If you're indeed talking about the 8x32 Diamondback HD I really fail to understand how can you say that the DB H 8x32 (mind you, I'm not talking about the 8x28) have a "poor low light performance". We have to remember it is an 8x32 (not an 8x28 or an 8x56) but, since you like Allbinos tests (so do I) and usually give them credit, simply check the Diamondback HD 8x32 light transmission against other well known devices. For example, a really nice 8x30 for the price has always been the Monarch 7 8x30 and also its siblings, like the Opticron Traveller 8x32, I've used both for years and I would never say (and I've never heard anyone saying) they have a poor low light performance within their format, a humble x32. Check Allbinos: Monarch 7 vs Diamondback HD
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Their performance is quite similar: both start at 80something % (actually, the DB has a higher figure in the 400-500 range (I guess hardly perceptible anyway). Both reach to touch the 90 % figure between 600 - 700. In fact, their final figure is basically the same, within the margin of test-error: 85,1 for the Monarch and 84,6 for the Diamondback HD. But then, remember the Monarch is way more expensive. So I really struggle to see the Diamondback as a "dark" 8x32 (especially for the price). No, it's not a Habicht (nor does it intend to be) and yes, my 8x32 ELSV is a little brighter, but I don't think you can say a bad word about the light transmission of the Diamondback HD 8x32.
In fact, coming back to the Sightron Bluesky 8x32 that you mention. While I haven't found any transmission figures for the Sightron, its sibling the Kenko Ultraview (by most accounts, an extremely similar model made in the same factory in the Philippines, if not actually the exact same binoculars) was tested by Allbinos and, oh, the surprise: it got a way worse light transmission performance than the Diamondback HD. While the Vortex reaches the 90 % at some point and gets a 84,6 % overall figure, the Kenko (Sightron sibling) doesn't reach the 90 % at any point and and has an overall figure of just 81,9 %. While I can't say that the Sightron shares this exact results, I would be really very much surprised if it got a better transmission figure than the Diamondback HD, especially one that could be perceived.
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