обзоры

The Fujinon KF 8x32W binoculars came to my test. 8×32 format binoculars are considered the most versatile in combination of magnification / dimensions / weight parameters, suitable for daytime and astronomical observations. For ground objects at dusk, 8×32, of course, will be noticeably dimmer than 8×42 or 8×56, however, for long-term wear on the neck 8×32 will be more convenient. This is especially true for hunters, animal watchers and tourists.

I was very surprised that the Fujinon KF 8x32W has very few reviews. As it turned out, there are models that are very similar in characteristics and appearance to it – Sightron “Blue Sky” II 8×32, Kenko Ultra View EX OP 8×32 DH II, Vixen New Foresta HR 8×32 WP. Their case looks a little different, and also, most likely, a different coating, but there is a very high probability that optically they MAY BE similar to Fujinon KF 8x32W, and he himself is the “reincarnation” of the above binoculars.

Fujinon KF 8x32 W

Fujinon KF 8x32W

Declared specifications from the manufacturer’s website:

Magnification 8x
Eye relief in mm 14.5
Field of view 7.5°
Field of view at 1,000m in m 131.1
Exit pupil in mm 4.0
Twilight factor 16
Interpupillary distance range (mm) 58-72 (measured 54-74)
Weigth (kg) 0.47
Neck strap Supplied
Carrying case Supplied
Dimensions (Length × Width) 131 x 139 x 53

Also declared full multilayer coating (FMC), phase and silver coating of prisms. Читать далее (Read more) > > >

Svbony UHC 1.25″ filter review

I got Svbony UHC 1.25″ astronomical filter for test. The purpose of the UHC (Ultra High Conrtast) filter is to improve the visibility of gas nebulae. The “real” UHC filter should only pass H-beta lines (486.1 nm) and an OIII doublet (495.9 and 500.7) nm). The UHC filter is not designed to observe objects of stellar nature (galaxies, star clusters), as well as the Moon and planets.

The declared graph shows that the filter has too wide a passband for the UHC filter. This is typical of cheap UHC filters. It also transmits light in the red region, however, it can be useful for shooting hydrogen nebulae in urban light conditions.
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Binoculars with a magnification of 10x, in my opinion, are the ultimate for handheld observation. Magnification over 10x already require an support, tripod or built-in image stabilizer. Binoculars of the 10×42 format are in stable demand, they are noticeably lighter and more compact than binoculars 10×50, but they have a greater magnification than similar ones in weight and dimensions of 8×42. However, making a good roof binocular is not an easy task. My attention was drawn to one of the top Olympus binoculars – 10×42 EXWP I. The binoculars were released a long time ago – the mentions I found go back to 2003. I was unable to find a press release on the release of this binoculars on the Olympus website.

Many of the Olympus models present in stores have been available since 2003 (for example, the Olympus 7×35 DPS I). In 2018, the new Olympus 8×42 Pro and 10×42 Pro binoculars with ED glass, dielectric coating, and improved illumination were presented.

Olympus 10x42 EXWP I

Olympus 10×42 EXWP I

Specifications declared by the manufacturer.
Magnification: 10x
Prism type: roof with phase correction
Optical scheme: 9 elements in 6 groups
Environmentally friendly lead-free glass
Prism Material: High‑index BaK4 prisms
Coating: Full multi‑coating / Phase coating / UV coating
Aperture, mm: 42
Exit pupil, mm: 4,2
Eye relief, mm: 15
Relative brightness: 17,6
Real field of view, ° : 6
Visible field of view, ° : 60
Field of view at distance 1000 m, m: 105
Minimum focusing distance, m: 3
Dioptric correction: D ±2
Interpupillary distance, mm: 60–70
Focusing type: central
Eyecups: twist-up/down eyepieces
Size: classic
Gas filling: nitrogen
Waterproof/fogproof/dirtproof: yes
Size: 129 x 145 x 53 mm
Weight, kg: 0,66
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