别纠结啦，洋文还过得去的话，看看这里：http://www.kenrockwell.com/nikon/16-85mm-vs-18-200mm.htm

另外一个网页的摘录：
Hugh Look , Jun 25, 2008; 05:49 a.m.

My suggestion would not be a technical one: instead, look at lots of travel pictures (e.g. some of the National Geographic books) & ask "which ones would I like to have as either a good reminder of my honeymoon or as stunning images that will satisfy me as a photographer". If a lot of them are close-in, dynamic, shots with lots going on in the foreground, or wide-open-spaces with huge skies then go for the 16-85; if on the other hand they are rather more distant, long-range images then the 18-200 may suit you better.

If they are in the middle you will probably be OK with either!

I have both, and the technical answer is of course "it all depends". Overall, the 16-85 seems to me to have better image quality than the 18-200, especially at or near full aperture. It also feels better built than my version of the 18-200, although I understand that these have improved recently - mine was an early model. The VR works very well on both.

The reason I prefer the 16-85 and end up using it much more is simply that it offers a little bit of extra wide-angle that makes a difference for me: I find it better for interiors and fairly close-in street or urban landscape photography. If you are more interested in picking out details, or the occasional wildlife shot, then the 18-200 might be better.

The only other point I'd make on the technical side is that with a D300 and the image quality of the 16-85 you do have some room for cropping to the equivalent of a longer lens and still being able to print to up to A3, which would give you some additional reach (although maybe not the full 200mm). The 18-200 can be quite soft at the longer end, making the difference less noticeable.

The tripod advice is good, but if you can't a beanbag is very useful and easy to carry around. You can usually find a convenient wall/table/passing small child or large dog to perch it on for self-timer shots of you & your wife, too.

H

Richard Armstrong , Jun 25, 2008; 07:17 a.m.

As others have mentioned, you will find a host of opinions here. I have traveled with the 18-200 on my D300 and have been very pleased with it's range, convenience and quality. I don't think you'll really find yourself obsessing about apertures or whether you have zoomed out close to 200. After all, you will be enjoying your honeymoon:-)! Seriously, you can produce very nice sharp images with the 18-200 VR. I would recommend that you take a look at Matt Laur's travel shots from Italy with the 18-200 and read his comments on this lens in his forum posts.

Peter Hamm , Jun 25, 2008; 07:32 a.m.

I think if you want a one-lens travel solution, the 18-200 is the easy choice. I'd rather not miss the 85-200 range than the 16-18 range for almost the same price. I shot a LOT above 85mm on my trip to Alaska two years ago, which is what I bought it for.

At the long end the 18-200 suffers a bit wide-open, but wider than say 80mm I don't find that it really does, although I do try and shoot in the sweet spot of f8 - f13 as much as I can.

Check out Thom Hogan's excellent review.

http://www.bythom.com/18200lens.htm

家庭妇女……过日子专业户，哈哈～～

楼主家LD很专业啊，诸事请示即可

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唉～～ 发烧让人糊涂，等待却总让人反省啊…… 扪心自问，全幅真的是那么重要嘛？？偶那点水平用个全幅就能显著提高？？自个的钱包也真的也升级啦？？…… 这时偶的脑中立马浮现出LD闪闪发光的光辉革命形象，耳边又响起LD苦口婆心铮铮教诲：“一台D700可买一套D300S，哪个合算自个掂量……烧啥无所谓，但偶们是过日子人家……”LD的话句句带针，字字带刺，让偶阵痛之后茅塞顿开，终于顿悟“三个永远”—— 相信并听从LD永远没错；过日子永远比烧相机重要；钱包升级永远没有相机升级快。

于是痛定思痛，还是按照偶那咖机发烧准则——小烧有益，量兜而行吧。终于不愿再去等啥啦……左思右想瞻前顾后，想来自个天资愚笨，天性懒惰，出手小农，再加上主要还是外出游玩为主，兼外拍小LD ，前一次去大西北借了台D300，感觉比D80真不是一个档次，于是下定决心排除万难决定就烧D300S点到为止吧，思想已定，板上钉钉啦。这个请各位DX手下留情，口下积德，千万别再给偶放其他剧毒啦……拜托拜托，呵呵～～～

今日求教的是配镜之事， 16-85 VR头还是18-200 VRII 头，两者价格差距不大，前者广角点，后者长焦点，貌似画质也相差不大，所以纠结至今，想来无忌高人如云，特上来请教，请各位DX就事论事，就镜谈镜，就在这两头之间帮助偶选择推荐，动之以情，晓之以理，以便让偶决断、了断。偶以前100位推荐中比例占先者购之。

再次诚恳提醒各位DX一定要手下留情，口下积德，就事论事，就镜谈镜，不要再无边放毒出去，偶受之不起，也折腾不起，再次拜谢。呵呵～～

推荐有用者有赏，奖励玩主论坛中《咖啡机选择串串烧》帖子终身免费观看权。嘻嘻～～

/showthread.php?threadid=669940

[kj008 编辑于 2010-01-13 16:45]

[2010-01-15 11:24 补充如下]

感谢广大TX热情踊跃的推荐……偶真的很感动……谁都没有把偶往死里推，基本围绕这2个头在转……相反玩主坛的几个咖友就不厚道……尽把偶往火坑里推……嘘，千万别让他们看见啦……

在此偶一并谢过……也就不一一回复啦，去掉模棱两可滴，到现在的粗略统计：
赞同16-85 的 30票
赞同18-200的 20票

基本属于旗鼓相当……感觉对18-200的认知多半在老版的基础上，不知道新版的是否有些革命性的改观，呵呵～～

再满100票……继续…… 呵呵～～