SLR Canon camera lens 18135 good or 8518 good?
The specific words to see your use I think if you have to choose a person or a good 18135 better unless you are very clear that you want to shoot what to choose 8518 that the limitations of the larger lens
But if you only take candy portrait like the need to blur the background that 8518 but this head can not zoom Jiaojiao still relatively long daily use more limited even if the shooter is not good in the room started because too long
It is best to get one of these two heads
Daily shooting, or 18135 practical point basically what subject matter can shoot the case of virtual effect as 8518
550D is half-width with full-size lens focal length to be multiplied by 1.6 is the real perspective focal lengths are based on the full standard
Full width of the sensor with a large lens without conversion factor But Canon's full-frame machine can not use half of the lens full of high sense of feeling more impatient little depth of field shallow easy to blur
