優點:
- Solid built, not a problem with the slide out zoom, even some c-hings said there will be dust slip inside. But I think it is acceptable
- Reasonable image quality.
- Focus is quick enough to catch birds snap
- \"Smooth-Tight\" locking system is good to prevent careless lens drop-out
缺點:
- Need to put higher ISO to increase shutter speed at max 400mm
- It would be good if it is fixed aperture, i.e. f/4, even the price is few k more.
評價:
Before using it, I was worrying the weight of this lens but now already get used to it and feel not a major problem for a half day activity. I used to use SSWIS + 1.4; honestly previous combination is more flexible but with a 400mm itis really usefull for birds and insects photographing, as well as stage performance. The price 12++K is acceptable. I will recommend this lens to those who like to photograph birds, insects, flowers, stage performance, concert, or even landscape.