Delta Optical Forest II 8.5x50 Binoculars
The Forest II builds on a well-loved series of roof prism binoculars and takes it a step further. The optical system uses BaK4 roof prisms with a special surface treatment and phase coatings. Combined with multi-layer anti-reflection coatings on all optical surfaces, the result is immediately clear: a sharp, natural image that is ideal for birdwatching and nature observation in any lighting conditions.
The binoculars are waterproof and nitrogen-filled, so they handle rain and fog without any risk of internal fogging on the lenses. An exceptionally wide field of view adds to the optical performance and makes it easy to follow even fast-moving subjects in the field. The compact roof prism design makes these binoculars a practical companion for day trips, birdwatching and nature travel.
Key features
- BaK4 roof prisms with phase coatings for high contrast and sharp detail
- Multi-layer anti-reflection coatings on all optical surfaces
- Waterproof and nitrogen-filled - no internal fogging in wet conditions
- Exceptionally wide field of view for comfortable tracking of moving subjects
- Compact roof prism design - easy to carry on any outing
- Suitable for birdwatching, nature observation and travel
Who are these binoculars for?
The Forest II 8.5x50 suits anyone who spends time outdoors and wants reliable optics. The 8.5x magnification gives a stable, comfortable image - easier to hold steady than higher magnifications. The 50 mm objective lenses gather plenty of light, so the image stays bright even at dawn or dusk. Whether you watch birds, enjoy nature walks or explore the countryside, the Forest II delivers clear, natural views in any weather.
Technical specifications
| Parameter |
Value |
| Type |
Roof prism binoculars |
| Magnification |
8.5x |
| Objective lens diameter |
50 mm |
| Prism type |
BaK4 roof prism |
| Prism coating |
Phase coating |
| Lens coating |
Multi-layer anti-reflection coating (all surfaces) |
| Waterproofing |
Yes - waterproof, nitrogen-filled |
Why choose the Forest II?
Many binoculars in this price range use BaK4 prisms without phase coatings. Phase coatings correct a small optical error that occurs in roof prisms and that reduces image sharpness and contrast. With phase coatings included, the Forest II produces noticeably sharper and more contrasty images than uncoated alternatives at a similar price. The nitrogen filling is another practical advantage - it prevents moisture from entering the body, so the optics stay clear even in cold, damp conditions.
A reliable choice for outdoor use
The compact roof prism design keeps the binoculars lightweight and easy to pack. They fit comfortably in a bag or rucksack and are always ready to use. For anyone looking for a dependable, high-quality pair of binoculars for birdwatching, wildlife watching or everyday outdoor adventures, the Delta Optical Forest II 8.5x50 is a strong choice.
