Corvane Lark 10x50 binoculars, with tripod adapter
10x magnification · 50 mm objectives · 5.6° field
$149
Catalog preview. Not available for purchase.
- Package
- With tripod adapter
- Optics
- ED glass, fully multi-coated
- Armor
- Olive rubber armor
- Edition
- 2025 edition
Specifications
| Magnification | 10x |
|---|---|
| Objective diameter | 50 mm |
| True field of view | 5.6° |
| Exit pupil | 5.0 mm |
| Dawes limit | 2.32 arcsec |
| Limiting magnitude | 10.5 |
| Eye relief | 18 mm |
| Close focus | 5.0 m |
| Prisms | BaK-4 Porro |
| Weather sealing | Not sealed |
| Weight | 980 g |
| Package | With tripod adapter |
| Optics | ED glass, fully multi-coated |
| Armor | Olive rubber armor |
| Edition | 2025 edition |
Description
The Lark 10x50 is a Porro-prism binocular with 50 mm objectives and 10x magnification. It is one of the most common binocular formats for astronomy, because it balances magnification, field of view, and weight in a way that suits most observers.
The 5 mm exit pupil works well for observers of any age and under suburban skies, where a larger exit pupil would mostly brighten the background. At 10x, the Moon shows its larger craters and maria clearly, Jupiter shows up to four moons in a line, and many open clusters resolve into individual stars.
With a 5.6-degree true field, the Lark 10x50 frames objects such as the Double Cluster, the Beehive Cluster, and the region around the Orion Nebula. Many Messier objects are within reach under dark skies, including the brighter globular clusters and galaxies such as M81 and M82, which appear as small, faint patches.
The higher magnification makes hand shake more visible than in a 7x binocular. Bracing your elbows or using a tripod adapter steadies the view and shows noticeably fainter stars. The tripod socket between the barrels takes a standard L-shaped adapter.
The BaK-4 prisms produce round exit pupils, and the main optical surfaces are multi-coated to reduce reflections. At 980 g, the Lark 10x50 is light enough for travel and for daytime use. The central focus wheel moves both sides together, while a diopter ring on the right eyepiece corrects for differences between your eyes.
To get the most from the Lark 10x50, let your eyes adapt to the dark for at least 20 minutes and avoid white light. A red flashlight and a printed star chart are enough to find dozens of clusters and nebulae in a season.
About this configuration
This listing covers one configuration of the Corvane Lark 10x50 binoculars, defined by its package, optical coatings, armor color, and edition year. The included tripod adapter lets you fix the binoculars to a photo tripod for steadier, more relaxed views. With the adapter on a tripod, hand shake disappears, which makes faint stars and close double stars easier to see. ED glass reduces the color fringing that otherwise appears around bright objects such as the Moon and Venus.
Olive rubber armor offers the same protection as the black version in a different color. This is the 2025 edition, which added a firmer diopter lock so the setting holds when you pass the binoculars around. Before you add a mount or adapter later, check the compatibility notes for the thread and fitting that this binocular uses.
What's in the box
- Binoculars with neck strap
- Objective and rain guard caps
- Soft carrying case
- Lens cleaning cloth
- L-shaped tripod adapter
Compatibility notes
- The central tripod socket takes a standard L-shaped binocular adapter with a 1/4-20 thread.
- Fits most binocular harnesses and parallelogram mounts for 1 kg binoculars.