The SA405 ED spotting scope is designed for birders. Professional-grade ED optical system delivers exceptional resolution, cuts chromatic aberration and provides outstanding color fidelity, edge-to-edge sharpness and light transmission.
The instructional video showing how to disassemble a 1.25" eyepiece https://www.youtube.com/shorts/IUO8Q14c5pg
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Nice optics and top notch workmanship, smooth operation
I was taught the true measure of spotting scope optics is what dusk and dawn viewing is like. We ranged this scope through about an hour of varying light loss at dusk to the point it was nearly fully dark. It performed very well. The light in the scope view was always significantly brighter than the unaided eye alone could see. Details like individual chain link wires, for example, could clearly be seen in the scope when all we could see was dark shadowed areas.
Nice optics and top notch workmanship, smooth operation
This spotting scope is as described in the product description. In addition, it also comes with a nice scope cover that can be left on when mounting the scope to a tripod, etc. The mounting flange on the scope also directly interfaces with a Arca-Swiss quick mount without need of an adapter.The focus ring is smooth and well located near the mounting point to minimize scope movement during adjustment. This scope is very similar looking to a similar big name brand scope. This is such a nice unit I am looking at other products from this company as well.
| Model | SA405 |
| Objective Lens Diameter | 85mm |
| Magnification | 20-60X |
| Prism Type | Porro Prism |
| Armor material | Rubber |
| Coating condition | Fully multi-coated |
| Eyepiece Diameter | 28mm |
| Eyepiece Glass Group | 10pieces/7group |
| Eye Relief | 19.5-18mm |
| Exit pupil | 4－1.35mm |
| Field of View（Angle） | 1.92-0.93° |
| Field of view | 102-48ft@1000yds |
| Near Focus Distance | 12m |
| Waterproof | IPX6 |
| Color | Army Green |
| Net Weight | 2100g |
| Unit Diamension | 430x103x173mm |
The Parameter Comparison of SV406P and SA405 Spotting Scope
| Model | SV406P | SA405 | SA405 |
| SKU | F9355B | F9383A | F9383B |
| Magnification | 20x-60x | 20-60X | 20-60X |
| Objective Diameter | 80mm | 85mm | 85mm |
| Objective Material | Extra-Low Dispersion Glass | Extra-Low Dispersion Glass | High Definition Glass |
| Focal Length | 430mm | 482.6mm | 482.6mm |
| Eyepiece Diameter | 24mm | 28mm | 28mm |
| Objective Lens structure | 3-Elements / 3Groups | 3-Elements /2Groups | 2-Elements /2Groups |
| Zoom Eyepiece Lens structure | 10pieces/7group | 7pieces/4group | 7pieces/4group |
| Prism Coating | FMC | FMC | FMC |
| Barrel Size of Eyepiece | 1.25inch | 1.25inch | 1.25inch |
| Real Field of Angle (Degree) | 2.1°-1.1° | 1.92°- 0.93° | 1.92°- 0.93° |
| Field of View (ft/1000yds) | 108ft-60ft@1000yds | 102-48ft@1000yds | 102-48ft@1000yds |
| Near Focus | 18ft / 5.5m | 12m | 12m |
| Exit Pupil (mm) | 4mm-1.33mm | 4－1.35mm | 4－1.35mm |
| Eye Relief (mm) | 20mm-18mm | 19.5-18mm | 19.5-18mm |
| Lens Coating | Fully multi-coated | Fully multi-coated | Fully multi-coated |
| Focus System | Dual Focus Mechanism | Helical Focus Wheel | Helical Focus Wheel |
| Nitrogen Filled | Yes | Yes | Yes |
| Waterproof | IPX7 | IPX6 | IPX6 |
| Eye Cup Type | Twist-up | Twist-up | Twist-up |
| Dimension | 405x180x120mm | 430x103x173mm | 430x103x173mm |
| Armor material | Rubber | Rubber | Rubber |
| Field of View (m/1000m) | 36m – 20m | 34m -16m | 34m -16m |
| Resolution (") | 2.0" | ||
| Relative Brightness | 16@20x / 1.69@60x | ||
| Apparent Field of View | 42°- 66° | 45° | 45° |
| Type of Prism | BaK-4 | K9 | K9 |
| Color | Army Green | Army Green | Army Green |
| Net Weight | 1625g / 3.58lb / 57.32oz | 2100g | 2020g |
- Adjustable eyecups can be twisted up and down for comfortable viewing with or without eyeglasses. The built-in sunshade reduces glare and shields the objective lens from raindrops and snow.
- The scope can be added to a tripod or car window mount that with 1/4-20 threads on the tripod heads.
- O-ring seal and Nitrogen filled provide waterproof and anti-fog performance. Rubber armor enhances both durability and grip for the user.
