Viking Optical Ltd., is been into the trading of optical products for more than 2 decades and they choose products of high quality that makes it remarkable in this field. Viking continues its support to sponsor for the Birdfair and the news is they have become a BirdLife Species Champion for promoting conservation actions. The products include binoculars, monocular and scopes. Viking AV66 ED Spotting Scope is an ideal choice for the general observation and travel use, it does come with the unique multicoated eyepieces that are been discussed in the following review.

An Overview:
The outstanding performance of Viking AV66ED Waterproof Spotting Scope is with the bright and sharp images and it gives a true colour performance. This version of spotting scope is complete with the zoom magnification and the aperture of 66mm. The length of the scope is 360mm which has the weight of 1200 grams. This can be neatly carried and comfortable handled even on the travel and is sure to support any outdoor adventures. The black body with the rubber armouring adds to its professional look.
Technical Details:
Magnification – This model comes with the zoom magnification that ranges from 16.5x to 50x. Based on the viewing requirement the choice of magnification can be adjusted and fixed. For more detailing the magnification can go up to 50x which means the objects seem to be 50 times bigger than the original size.
Aperture – The size of the objective lens is 66mm in diameter which is the aperture of this scope. Based on the size of the aperture the clarity and brightness of the viewing image can be obtained. This model has an average level of aperture of 66mm. The brightness transferred in this lens makes the image clear.
Exit pupil – This is the small portion of lens present in the objective lens which measures 4.0 to 1.3mm and this supports the light gathering ability of the lens making it possible to obtain a glare free vision of the viewing objects.
Field of view – The field of view at the distance of 1000m is 38 -21m in the lowest and the highest set magnification. The degree of the field of view is 2.2 -1.2 at the low and high magnification respectively.

Ergonomic features:
This Viking AV-66 ED Angled Spotting Scope has a rubber armouring that not only protects the mechanism inside but also gives a sure grip even when in extreme weather conditions. The waterproof design eliminates the worry of using it near the waters or rains. Practically the multi coated optics are best for extra low dispersion of the glass and it transmits true colour rendition and so is this model with the exclusive ED glass objective lens. The rubber eyepiece and the eyecups with the twist up design are few great additions to this model. All of the models in this series use bayonet fitting and the eye relief are noted to be 17.5 to 17 of which anything more than the number 15 is comfortable for the eye glass wearers.
Verdict:
Overall, Viking AV66 ED Rubber Armouring Spotting Scope is an ideal option for those transferring from the beginner to the intermediate level. They make it complete with the 5 year warranty offered by Viking. The travel case and the water proof construction give it a try for the travellers and hunters.
Viking AV-66 ED Spotting Scope – Technical Specification Table
| Manufacturer | Viking |
| Model Name | AV-66 ED Spotting Scope |
| Model number | AV-66 ED |
| Dimension | 360 mm length |
| Magnification | 16.5 – 50x |
| Aperture | 66mm |
| Rubber armouring | Yes |
| Optical coating | Multi-layered coating |
| Colour | Black |
| Field of view m/1000 | 38-21 m |
| Weight | 1200 grams |
| Close focus | 5m |
| Eye relief | 17.5 – 17mm |
| Waterproof | Yes |
| Compatible with tripod | Yes |
| Type | Light weight and portable |
| Eyecups | Twist up |
| Exit pupil | 4 – 1.3mm |
| Warranty | 5 years |








