1. People should wear dark sunglasses to watch the solar eclipse. It is best to buy a medium gray mirror (ND) for the camera. The medium gray mirror should be selected above ND32 (the larger the number, the higher the light blocking rate) to avoid CMOS damage of the camera and bring unnecessary losses.

2, 55-200 lens, facing the sun, the focal length is not large. You know, when the sun shines, the size of the sun image in the photo is related to the focal length: for a full-body camera, the sun size of a 50mm lens is about 0.5mm, and the image can be enlarged by 0.5mm for every 50mm increase. Therefore, if we only choose a focal length of 200mm, the sun image on the CCD is about 2mm, which must be clearly understood. Therefore, it is recommended to use a focal length of 200 mm

3, it is best to use a small aperture, first choose F=8- 1 1, if necessary, you can reduce it (aperture first, of course), plus the ND mirror, of course, the shutter is slow, and the telephoto is used, so it is recommended to use a tripod when taking pictures, and it is best to release it with a cable to ensure the clarity of the photos.

Extended data:

Matters needing attention during observation:

In the stage of non-total lunar eclipse, if the observer does not adopt scientific viewing methods, it will cause harm to people's eyes, and even become permanently blind in severe cases. Many people mistakenly think that when the sun is covered by 90%, it is almost the same as the total lunar eclipse. In fact, the sunlight at this time is still 65,438+million times brighter than that at the corona. During the whole eclipse, the most exciting moment is only when the sun is blocked by 99.9%. Only in this way can we observe directly with the naked eye.

During the partial eclipse, it is better to wear a pair of total solar eclipse observation glasses, or use a basin filled with ink to watch by reflection, which is safer. When looking through a telescope, you must add a filter to the eyepiece.