Excuse me, is Canon SLR good for recording dance with 25 frames or 50 frames? What are the shutter speeds for frames 25 and 50?

When recording, if conditions permit, the higher the number of frames, the better. High standard video material can provide more space for post-processing. For example, most of the videos shared online are 25 or 24 frames, but if the material is 50 frames, you can simply achieve twice the slow playback effect, and after processing, you can have a more obvious upgrade effect. Of course, if it's just that kind of daily record, 25 frames is also completely possible. As for the shutter speed, unless necessary, it is generally controlled in the reciprocal of twice the number of frames. For example, for 50 frames, the shutter is1100, and the shutter is combined with the aperture to control the exposure, so it is more important to look at the specific scene environment. Of course, if the shutter is too high or too low, it will really make the video look awkward, incoherent or trailing.