Precautions for choosing wide-angle bird watching goggles

In addition to the consideration of the birdwatching telescope brand, another important consideration is the choice of birdwatching eyepieces. The most common problem is the image circle. The so-called imaging circle is an extra black shadow on the original photo. This is a big problem with using a single-lens digital combination to shoot birds, because the beautiful silhouette of the bird is disturbed by this annoying imaging circle.
Another way to eliminate the imaging circle is to zoom in on the camera to shoot. Generally, when the optical zoom is more than twice the size, the imaging circle will disappear. The second is the choice of eyepiece magnification. Generally, the magnification of a monocular telescope used for bird watching is about 25 to 32 times. This magnification is very convenient for bird watching, but because the digital camera itself can optically magnify, it must be used at certain magnifications. , the imaging circle can be eliminated, so the magnification of the monocular telescope used for taking pictures should not be too large, generally about 20 times is the most appropriate.