優點:
it sharp in entire aperture range, natually, as it started from f4... If lens started from f5.6, it should be more sharper, but does it convenient with such aperture for using?
缺點:
only f4, not enough for snap or fast motion photo under preserve quality image without push up ISO, heavy plastic feel without pro feel for heavy duty like a toy.. as it is recent year launched, so expensive in price with just f.4 aperture...without aperture range for previous bodies. not so convenient with a bit longer than 17-35 f2.8, price also closed with 17-35.
評價:
it sharp, but hard sharp sometime image look not natural, so much digital image feel, the aperture is only f4, not enough for snap shot or fast motion taking, ( unless not care quality to push up ISO) mostly pro quality wide zoom should be f2.8... heavy plastic feel and so much parts join line on barrel, make me feel it's just an amateur unable to stand for rough or extreme temperature using.