Beginners check the following points：
In order to understand magnification, you should also know the meaning of numbers on the spotting scope. On a scope, you'll find two sets of number; an example is the numbers 20-60x60.
20-60 – refers to the zoom. Hence, this means the target under observations seems to be 20 to 60 times closer.
60 – refers to the scope's objective diameter. It is measured in mm. In this case, the diameter is 60mm.
2.Light Gathering Capacity
When it comes to determining the light gathering capacity of a spotting scope, you should look at the objective lens. The bigger the objective lens is, the more light goes into the scope – which means, crisp, brighter images.
However, the bigger lens also means heavier to carry, so a not good option for those whose carrying heavy objects is not on their travel list. You may choose a portable one, or get a tripod stand for the scope.
This one is for glass wearers. Eye relief helps minimize eye strain when using the spotting scope. It is crucial to pay attention to the appropriate length, so you'll be able to get the best view. Commonly, the suitable distance is 12 to 15mm.
Does the spotting scope come with a carrying case or other accessories? Is it durable enough? Is it built weatherproof and fogproof? How about its process of set up and use? Look if the scope has a knob or grip barrel for focusing.
5. Your budget
For more professional knowledge of spotting scope, we'll share in the next chapter