70200 or 100500 is more practical?

70-200mm and100-500mm. The practicality of these two kinds of lenses varies according to the requirements.

70-200mm is a practical lens, suitable for urban or cultural photography, and light in weight.

The lens of 100-500mm has a longer focal length, which is suitable for outdoor scenery, bird shooting, medium-distance animals and other photography needs, but its relative weight is heavier and its maximum aperture value is smaller.

So according to your photography needs, 70-200mm and 100-500mm have their own applicable scenes. If you need a thin and practical lens, 70-200mm is a better choice; If a longer focal length and a larger aperture are needed, 100-500mm is more suitable.