Binoculars review

Opticron Verano 10x42 BGA PC

Opticron Verano 10x42 BGA PC
18 January 2010
The Verano BGA PC series (in Spanish „verano” means “summer”) consists of light, compact and handy roof prism binoculars with the following parameters: 8x32, 8x42, 10x42, 10x50 and 12.5x50. All of them are made of BaK-4 glass prisms phase correction coated (PC). The manufacturer assures that all air-to-glass surfaces were covered by high quality anti-reflection multi-coatings to obtain the best transmission possible and damp down unwanted flares. The eyepieces are complex, 4 or 5-element constructions which are supposed to provide a sharp image up to the edge of the field, lack of geometrical distortions and a comfortable eye relief (from 17 to 22 mm depending on the model).

The body is made of light but solid aluminum padded with high quality rubber. The binoculars are sealed so they are submersible down to a depth of 3 meters. They are also “fogproof” as they are nitrogen-filled.

The 32-42 mm class instruments provide a sharp image already from 1.8 meters; bigger - from 3 meters. They come with a 30-year-long guarantee.

  • Lornetka Opticron Verano 10x42 BGA PC
  • Lornetka Opticron Verano 10x42 BGA PC
  • Lornetka Opticron Verano 10x42 BGA PC
  • Lornetka Opticron Verano 10x42 BGA PC
Manufacturer data


web site

Distribution / Sales:

Olbrycht Trade sp. z.o.o.
web site

Magnification Lens diameter Angular field of view Prisms Eye relief Weight Price
10 42 105/1000(6o) Bak-4/roof 17 mm 630 g 1850 PLN
Results of the review
Real front lens diameter Left:   41.97+/- 0.05 mm
Right:  42.01+/- 0.05 mm
8 / 8.0 pkt
Real magnification 10.11+/- 0.2x 3/3.0
Transmission 82+/- 3% 10.5/25.0
Chromatic aberration Between low and medium in the centre, high at the edge. 5.5/10.0
Astigmatism Slight. 7.1/10.0
Distortion The distance of the first curved line from the field centre compared to the field of vision radius: 48% +\- 6% 5/10.0
Coma Low even at the very edge. 8.3/10.0
Blurring at the edge of the FOV The blur ocurrs in the distance of 80% +\- 3% from the field of view centre. 6/10.0
Darkening at the edge the FOV Slight. 4/5.0
Whiteness of the image Image slightly cream-yellow. 3.6/5.0
Collimation Exemplary. 5/5.0
Internal reflections
Left: Right:
Opticron Verano 10x42 BGA PC - Internal reflections - Left Opticron Verano 10x42 BGA PC - Internal reflections - Right
Housing Light and compact. Regulated eyecups but they extend under even light pressure. The rubber sticks out near the objectives. 6.8/8.0
Focusing Comfortable central screw. Running through the whole scale needs a 520-degree turn. Individual focus screw is averagely comfortable. It moves the lens during focusing. 4.3/5.0
Tripod Moderately difficult to access. 2.5/3.0
Interpupilary distance from 58 to 74.5mm 5/6.0
Closest focusing distance 1.50 m. 2/2.0
Eyepieces FOV Apparent field of view of 61.3 deg (according to simple formula) and 56.5 deg (according to tangent formula). 11.5/20.0
Field of view Measured by us amounted to 6.09 +\- 0.03 degrees and was by 0.09 degree wider than in the specifications. 5.5/8.0
Quality of the interior of the barrels Very black but shiny with a small gray bottom. Some specks of dust and one small hair. 3.6/5.0
Left: Right:
Opticron Verano 10x42 BGA PC - Vignetting - Left Opticron Verano 10x42 BGA PC - Vignetting - Right
Pupils distinctly egg-shaped.
OL: 6.9%, OR: 4.3%.
Prisms quality Good quality BaK-4. 8/8.0
Antireflection coatings Greenish on the all air-to-glass surfaces. Medium intensity. 4.5/5.0
Warranty [years] 30 5/6.0
Final result
31st place in global rank of our test of 10x42 binoculars.
129.5 / 190 pkt
Econo result 35th place in Econo rank of our test of 10x42 binoculars. -0.8pkt.


  • handy and solid housing,
  • most of the field of view is sharp,
  • slight astigmatism,
  • low coma,
  • slight light fall-off,
  • sharp image already from1.5 metres,
  • good quality BaK-4 prisms,
  • long guarantee period.

  • distinctly egg-shaped pupils,
  • chromatic aberration at the edge of the field of view very clearly visible.

W kolejnej odsłonie testu lornetek 10x42 zmierzyło się pięć bardzo podobnych do siebie instrumentów. W kolejno¶ci alfabetycznej s± to: Bynolyt Buzzard SHR, Ecotone AD-7, Fomei Diplomat, Opticron Verano oraz Vixen Apex Pro. Poniższa tabela prezentuje porównanie własno¶ci i cen tych instrumentów.

In the next stage of the 10x42 binoculars test five very similar instruments competed against each other. In alphabetical order these are as follows: the Bynolyt Buzzard SHR, the Ecotone AD-7, the Fomei Diplomat, the Opticron Verano and the Vixen Apex Pro. The chart below shows a comparison of properties and prices of those instruments.

As you see, the parameters of these binoculars are almost identical. All of them are small, handy and light constructions of practically the same weight and the same dimensions and identical field of view. Their exteriors don’t differ either as can be seen in the photo below.

The weight differences are so small we can suspect in every set of binoculars an identical optical system was used in the sense of the number of elements and groups. The instruments can differ slightly when it comes to the eyepieces’ construction which might be suggested by minimal differences in eye relief values, changing from 15 to 17 mm. What’s more, the binoculars have certainly different coatings which is clearly visible if you just glance at their colours and intensity.

When it comes to the score in the test the binoculars occupy exactly the same quality segment. All of them got about 123 points and the difference between the best and the worst amounts to only 2.5 points. It is really not much because 2-4 points constitute the estimated summary error of our testing methods. From the statistical point of view the score differences are practically negligible, although they lead to interesting conclusions.

Common traits of all the binoculars are quite visible. Because of small dimensions the prisms distinctly limit the light access through egg-shaped pupils. That effect is bigger for the left pupil. Short and small construction is also the source of problems with chromatic aberration correction. The eyepieces with the 60-degree-wide field of view don’t show sharp images to the very edge and about 20% of the field is visibly blurred. The binoculars’ transmission level is not impressive (apart from the Buzzard) because of the light loss on vignetting pupils and aluminum coatings on the prisms (only the Bynolyt used better SHR coatings).

It’s worth noticing that the Vixen, which is the cheapest, fared the best of these five devices. Vixen is a Japanese company after all and its factory is also situated in Japan. If you are close to the factory you can control it efficiently and cut costs at the same time.

One of the most expensive binoculars here is the Bynolyt Buzzard. The higher price can be justified by using special coatings on the prisms which enhance transmission (SHR). The test score seems to confirm it fully. In categories connected with the coatings (transmission, flares or coatings) the Bynolyt fares significantly better than the competitors although it wastes that advantage in other categories. If you consider transmission and a long guarantee period to be very important features the Bynolyt will be an excellent choice.

The next interesting suggestion is the Ecotone AD-7. Its score is the worst in this group but the price/quality ratio undoubtedly the best. Certainly it is a product worth pondering.

Perhaps the most difficult positions occupy the Fomei Diplomat and the Opticron Verano. For a really significant amount of money, compared to their rivals they offer nothing more than good guarantee conditions. When it comes to the optics and build quality their level is exactly the same as that of twice cheaper instruments from Vixen and Ecotone. Opticron Verrano is a bit lighter and it might be also a serious asset.