Binoculars review

Vortex Crossfire 10x42

Vortex Crossfire 10x42
14 February 2010
The Crossfire series consists of four roof prism models with the objective lens’s diameter of 32 and 42 mm and the magnification of 8 or 10x. Both sets of binoculars sport BaK-4 glass prisms and all air-to-glass surfaces were covered by mulilayer antireflection coating. The binoculars are waterproof, nitrogen-filled and padded with high quality rubber. Additionally, they have a comfortable eye relief distance and they come with lifetime warranty.
  • Lornetka Vortex Crossfire 10x42
  • Lornetka Vortex Crossfire 10x42
  • Lornetka Vortex Crossfire 10x42
  • Lornetka Vortex Crossfire 10x42
Manufacturer data


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Magnification Lens diameter Angular field of view Prisms Eye relief Weight Price
10 42 105/1000(6o) BaK-4/roof 16 mm 620 g 504 PLN
Results of the review
Real front lens diameter Left:   41.23+/- 0.05 mm
Right:  41.22+/- 0.05 mm
4 / 8.0 pkt
Real magnification 9.84+/- 0.15x 3/3.0
Transmission 78+/- 3% 8.5/25.0
Chromatic aberration Medium in the centre, high at the edge. 5.5/10.0
Astigmatism Slight. 6.7/10.0
Distortion The distance of the first curved line from the filed centre compared to the field of vision radius: 46% +\- 5% 5/10.0
Coma Low although distinct at the very edge. 7.1/10.0
Blurring at the edge of the FOV The blur occurs in the distance of 69% +\- 6% from the field of vision centre. 3/10.0
Darkening at the edge the FOV Visible. 2.9/5.0
Whiteness of the image A bit yellow. 3.3/5.0
Collimation Perfect. 5/5.0
Internal reflections
Left: Right:
Vortex Crossfire 10x42 - Internal reflections - Left Vortex Crossfire 10x42 - Internal reflections - Right
Housing Quite handy, medium sized. Solid. You can’t twist up the eyecups. 6.4/8.0
Focusing Comfortable central screw with the range of 420 degrees. Individual focusing moves very heavily with loud clicking and squelching; it also moves the outer lens. 3/5.0
Tripod There is a comfortable exit with a screw which keeps the objective lens caps at the same time. 3/3.0
Interpupilary distance from 58.4 to 75.6mm 5/6.0
Closest focusing distance 1.15 m. A splendid result! 2/2.0
Eyepieces FOV Apparent field of view of 55.9 deg (according to simple formula) and 52.0 deg (according to tangent formula). 8/20.0
Field of view Measured by us amounted to 5.68 +\- 0.03 degrees and it was by 0.32 degree narrower than in specifications. 3/8.0
Quality of the interior of the barrels Black and slightly shiny. Beautiful matt black bottom. A huge speck of dirt on the left tube’s lens. Small specks of dust on prisms. 3/5.0
Left: Right:
Vortex Crossfire 10x42 - Vignetting - Left Vortex Crossfire 10x42 - Vignetting - Right
Egg-shaped pupils.
OL: 4.0%, OR: 1.2%.
Prisms quality Good quality BaK-4. 8/8.0
Antireflection coatings Green-yellow-purple on the objective lenses. Green on the prisms and eyepieces. Medium intensity. 4.5/5.0
Warranty [years] Liftetime warranty 6/6.0
Final result
48 place in the overall ranking of the 10x42 mm binoculars’ test.
115.2 / 190 pkt
Econo result 14 place in the econo ranking of the 10x42 binoculars’ test. 6.2pkt.


  • solid casing,
  • low coma,
  • slight astigmatism,
  • good quality BaK-4 prisms,
  • good quality antireflection coatings,
  • sharp image already from 1.15 metres,
  • negligible flares,
  • good blackening inside the inner tubes,
  • such good warranty conditions are a real phenomenon in this class of equipment.

  • loud clicking by individual focusing,
  • dirt inside one tube,
  • low sharpness at the edge of the field,
  • objective lenses are closer to 41 mm than to 42,
  • real field of view distinctly narrower than in the specifications.

The cons list includes some important flaws but it would be difficult to expect a lot from a roof prism 42 mm set of binoculars costing just about 100 USD. We must admit in this price segment the Vortex Crossfire undoubtedly deals the cards. The field of view, although narrower than in the specifications, is still wider than the competitors’; the build quality is acceptable for a Chinese product, the optics - quite decent, and the list of other “pros” – quite long. If you have only 100-150 USD and you have to buy a roof prism 10x42 instrument it would be difficult to find something distinctly better.