Magnifier usually uses magnification? Triple? Five times, if you want to identify the authenticity of stamps, you have to choose? 5—? A magnifying glass of 20 times. When looking at stamps with a magnifying glass, there should be enough light, otherwise it will be difficult to see clearly, but avoid direct sunlight on stamps.

When using a magnifying glass, you must pay attention to protecting the lens. You can't wipe the lens with your hands or rough paper. You can wipe the glasses with flannel or the camera lens with soft paper. After using the magnifying glass, it should be stored in a clean box or plastic bag to avoid polluting the lens.

Magnifier is a tool that needs to be used for stamp collecting for a long time, so you can't choose a poor magnifying glass, otherwise it will be inconvenient to use. For example, the magnifying glass imaging is not clear enough, the color difference is serious, the imaging deformation is serious, and the light is insufficient.

Extended data:

After philatelists know how big a magnifying glass is needed to look at stamps, they should also pay attention to the fact that when using a magnifying glass to observe stamps, they should ensure that they are observed in a well-lit environment and try to avoid direct sunlight on the stamps themselves, otherwise it will be difficult to see clearly.

At the same time, pay attention to protect the lens in daily use. Don't wipe the lens with your hands or rough paper. If there is dirt, wipe it with a clean flannel and put it in a clean box after use.