SLR camera lens all the features of the scene to choose the basic common sense
In the telephoto: 85-135MM, because of its small deformation, photographer and the subject to maintain a relatively relaxed distance, and soft shallow depth of field, is usually used as a portrait lens.
Telephoto: 200MM or more, bird watching, stage, capture, sports focal lengths.
Standard zoom lens: 24-70, covering the most commonly used focal lengths, landscape, portrait, close-up, almost all have included, zoom lens of the preferred focal lengths, is also relatively easy to control the focal lengths, accounting for 80% of the shooting rate.
Take Canon as an example:
Ultra-wide, wide angle: 17-40, the focal length covers from the wide to wide-angle section, suitable for scenery, environmental portrait of the shot, the lens of the 17MM is very unique, ultra-wide focal lengths with its exaggerated deformation to make the picture dramatic. Wide-angle lens on the composition of the control requirements are relatively high, because the broad, so many elements, composition of these elements in the frame to do a good job arranging, otherwise it will be messy.
