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APM Telescopes HD 28x110
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Specifications
| Manufacturer | APM Telescopes |
|---|---|
| Model | HD 28x110 |
| Lens diameter [mm] | 110 |
| Magnification [x] | 28 |
| Angular field of view [deg] | 2.32 |
| Linear field of view [m/m] | 41/1000 |
| Exit pupil [mm] | 3.93 |
| Eye relief [mm] | 0 |
| Min. focusing dist. [m] | 15 |
| Twilight factor | 55.5 |
| Brightness | 15.43 |
| Prisms | BaK-4/Porro |
| Dimensions [mm] | |
| Weight [g] | 0 |
| Waterproof | Yes |
| Nitogen filling | No |
| Argon filling | No |
| Image stabilization | No |
| Tripod exit | Yes |
| Focusing | individual |
| Warranty [years] | 1 |
| Accesories | |
| Price | 0 |
| Additional information |
Owners reviews (1)
Overall
Owner since: 3 years
Price: $650
User profile: Semipro
Cons: Chinese, not all are equal, I have 3 of those, all are different (a bit more CA in one tube, a bit of astigmatism in other, etc..), but all in all, those are better than any 25x100 by a wide margin. In that price range, a good mount can surpass the cost of the binoculars.
Pros: Superior optical quality in the price range. I consider them to be a better value than the more expensive 100mm Miyauchi Chinese Clones. I prefer the 28x over the 20x; its exit pupil diameter is better for average skies and its AFOV is very good (64º). Medium to easy to conditionally align if knock out of collimation
Summary: Even that those are not perfect, I'll recommend them over any other medium priced giant binocular in the market