SAGA Luanfeng Professional APO Series Roof Prism Binoculars
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SAGA Luanfeng Professional APO Series Roof Prism Binoculars Full Specifications
| Parameter | 8.5X42 APO | 10X42 APO | 15X56 APO |
|---|---|---|---|
| MagnificationDiff | 8.5x | 10x | 15x |
| Objective ApertureDiff | 42mm | 42mm | 56mm |
| Eyepiece DiameterDiff | 26mm | 23mm | 24mm |
| Exit Pupil DiameterDiff | 4.8mm | 4.1mm | 3.8mm |
| Eye ReliefDiff | 22mm | 19.3mm | 18.5mm |
| Field of View at 1000 mDiff | 133m | 113m | 79m |
| Close FocusDiff | 1.5m | 1.5m | 3.5m |
| Optical Structure | 3-group 4-element dual-ED objective + 5-group 6-element eyepiece | 3-group 4-element dual-ED objective + 5-group 6-element eyepiece | 3-group 4-element dual-ED objective + 5-group 6-element eyepiece |
| Lens Material | 2x ED glass + 1x lanthanum lens | 2x ED glass + 1x lanthanum lens | 2x ED glass + 1x lanthanum lens |
| Flat‑field Correction | Flat-field wide-angle correction + distortion correction | Flat-field wide-angle correction + distortion correction | Flat-field wide-angle correction + distortion correction |
| Prism Coating | Phase coating + high-reflectivity dielectric coating | Phase coating + high-reflectivity dielectric coating | Phase coating + high-reflectivity dielectric coating |
| Optical Coating | SMC full-surface coating + lotus coating | SMC full-surface coating + lotus coating | SMC full-surface coating + lotus coating |
| Total Transmittance | 93% | 93% | 93% |
| Waterproof | Nitrogen-filled waterproof | Nitrogen-filled waterproof | Nitrogen-filled waterproof |
| Body Material | Magnesium alloy | Magnesium alloy | Magnesium alloy |
| Focus System | Center focus wheel + right diopter compensation | Center focus wheel + right diopter compensation | Center focus wheel + right diopter compensation |
| Prism Material | 22mm BaK-4 large prism | 22mm BaK-4 large prism | 22mm BaK-4 large prism |
| Prism Type | Roof prism | Roof prism | Roof prism |
| Interpupillary DistanceDiff | 57-74mm | 57-74mm | 63-74mm |
| Tripod Mount | 1/4" standard tripod mount | 1/4" standard tripod mount | 1/4" standard tripod mount |
| DimensionsDiff | 154×128×54mm | 154×128×54mm | 220×155×64mm |
| Net WeightDiff | 900g | 900g | 1420g |
| Eyecup Type | Hidden short eyecup, 3-step twist-up | Hidden short eyecup, 3-step twist-up | Hidden short eyecup, 3-step twist-up |
Never look at the sun through the telescope — it can cause permanent eye damage or blindness.
SAGA Luanfeng Professional APO Series Roof Prism Binoculars Product Overview
The SAGA Luanfeng professional APO series roof-prism binoculars come in 8.5x42/10x42/15x56 configurations. The apochromatic optical system pairs two fluorite-crown ED elements with one lanthanide element — a 3-group 4-element double-ED objective and a 5-group 6-element eyepiece with lanthanide distortion control. FLAT-FIELD wide-angle correction keeps the entire view sharp and flat. 22mm large prisms with phase and high-reflection dielectric coatings, SMC full-surface coatings plus lotus-effect coating push total light transmission to 93%. Magnesium-alloy body with exposed metal, nitrogen-filled waterproofing.
- APO apochromatic system: 2 fluorite-crown ED + 1 lanthanum glass, suppresses chromatic aberration for pure, natural rendition
- 3-group/4-element dual-ED objective, 5-group/6-element eyepiece with lanthanum low-distortion glass
- FLAT-FIELD wide-field correction + distortion correction, improves edge-to-edge sharpness
- 22 mm BAK4/K4 large prism with phase coating + high-reflectivity dielectric coating
- SMC full-surface coating + lotus coating, optimized light transmission, bright and clear images
- Magnesium-alloy body with metal exterior, professional hold experience
- Center wheel integrates right-ocular diopter adjustment for efficient operation
- Nitrogen-filled waterproof and anti-fog, fits varied outdoor observation
SAGA Luanfeng Professional APO Series Roof Prism Binoculars Product Features
APO apochromatic system
2 fluorite-crown ED + 1 lanthanum glass, suppresses chromatic aberration for pure, natural rendition
3-group/4-element dual-ED objective
5-group/6-element eyepiece with lanthanum low-distortion glass
FLAT-FIELD wide-field correction + distortion correction
improves edge-to-edge sharpness
22 mm BAK4/K4 large prism with phase coating + high-reflectivity dielectric coating
SMC full-surface coating + lotus coating
optimized light transmission, bright and clear images
Magnesium-alloy body with metal exterior
professional hold experience
Center wheel integrates right-ocular diopter adjustment for efficient operation
Nitrogen-filled waterproof and anti-fog
fits varied outdoor observation
SAGA Luanfeng Professional APO Series Roof Prism Binoculars Package Contents
Frequently Asked Questions
How many versions are available for this product?
3 versions: 8.5X42 APO, 10X42 APO, 15X56 APO. They differ in magnification, aperture and other specifications — switch between them in the specification table above to compare side by side.
What are the key specifications?
Magnification: 8.5/ 10/ 15x; Objective Aperture: 42 / 56mm; Eyepiece Diameter: 26 / 23 / 24mm; Exit Pupil Diameter: 4.8 / 4.1 / 3.8mm; Eye Relief: 22 / 19.3 / 18.5mm; Field of View at 1000 m: 133 / 112 / 79m. Full parameters are listed in the specification table above.
What is included in the box?
Standard package: Binocular Unit, Professional Case, Neck Strap, Eyepiece Cap / Objective Cap, Lens Cloth, User Manual, Packaging Box.
What are the main features?
APO apochromatic system: 2 fluorite-crown ED + 1 lanthanum glass, suppresses chromatic aberration for pure, natural rendition; 3-group/4-element dual-ED objective, 5-group/6-element eyepiece with lanthanum low-distortion glass; FLAT-FIELD wide-field correction + distortion correction, improves edge-to-edge sharpness.
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What to Consider When Choosing Binoculars
Compare Products
- Optical SystemAPO apochromatic system
- Prism CoatingPhase coating + high-reflectivity dielectric coating + AR coating
- Objective Configuration3-group 4-element (2x HOYA ED + 1x lanthanum)
- Eyepiece Configuration5-group 6-element (2x lanthanum + 1x field-flattener)
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