優點:
1.) IS function is very useful;
2.) Photo quality is better than its former because it has an UD len;
3.) Lighter;
4.) Lockable;
5.) Reasonable price;($42xx.00)
缺點:
1.) Max. AV of f5.6 at 300mm is inadequate;
2.) Only micro USM not ring USM;
3.) lower speed focus at its 200-300;
4.) easy duct seepage;
5.) No hood and body cover are provided despite of over $4k;
評價:
It is an another good choice to purchase this len if could not affort "L Grade" len. It would be more perfect if it applys the ring USM for focus.