SLR camera lens focal length how much to how good
Such a large zoom, it is prone to lens distortion, if forced to control within the acceptable range, will cause the lens weight increases, and the price is expensive, even so, than the same level of small zoom lens in the same focal length performance.
And like the lens of 18-200, what can be shot, but in the same person to use the case, the effect is worse than all the above listed lens.
Answer the fifth floor, this lens I have not used, but if not accident, the imaging effect than 70-200 / F2.8L poor, more focal lengths of two to three times the zoom lens I am not familiar with, but with the red Circle head imaging will be better than it is.
In the telephoto lens, such as 70-200,100-200, etc., suitable for shooting more distant objects, such as concerts, games, etc.
Telephoto lens, such as 400-600, suitable for long-range capture, such as wild animals, birds and so on
Different focal lengths, have their own role, there is no good question
Wide-angle lens, generally 17-40,16-35 and so on models, suitable for shooting scenery
Medium focus lens, such as 28-70,24-70, etc., suitable for portrait, which also includes 50,85,100 fixed focus lens, but also the most suitable portrait
