天涯鏡，一支鏡可以近影遠影，唔使換鏡。
因為唔使換鏡，帶住去旅行最方便，
減少換鏡時灰塵入侵的機會
AF meet expectation
有 image stabilizer
顯示： 1 - 6 (最新發表)
優點:
缺點:
當相機向下，鏡頭zoom ring會受地心吸力拉長
不過有個lock 可以lock 住
光圈唔夠大
不是恆定光圈，zoom 遠光圈會變細
EF-S 接唔到full frame body
不過有個lock 可以lock 住
光圈唔夠大
不是恆定光圈，zoom 遠光圈會變細
EF-S 接唔到full frame body
評價:
以前買500D 跟kit lens 18-200mm
比依家的新機kit lens 18-135mm好好多。
用過咁多鏡，18-200真係一支超好用的鏡。
比依家的新機kit lens 18-135mm好好多。
用過咁多鏡，18-200真係一支超好用的鏡。
最後更新：2014-11-25 16:02:03
優點:
- Fast focusing, reasonably fast in low light
- Smaller in size (compared to my Tamron 18-270 VC)
- Larger aperature at tele side (5.6, vs 6.3 of the Tamron)
- Sharp! and much sharper indeed! (compared to the Tamron)
- Better build quality (compared to the Tamron)
- Smaller in size (compared to my Tamron 18-270 VC)
- Larger aperature at tele side (5.6, vs 6.3 of the Tamron)
- Sharp! and much sharper indeed! (compared to the Tamron)
- Better build quality (compared to the Tamron)
缺點:
- No USM (come on Canon, Nikon provides AF-S to their 18-200 VRII !!!)
- Focusing ring moves during AF (but I can live with that)
- Not cheap
- Hood not provided
- Tele end is sharper than the wide end
- The zoom mechanism gets loose quickly and extends automatically (the lock is useless since it can only lock at the wide end, I wish I could have a lock that can lock freely at any focal length)
- Focusing ring moves during AF (but I can live with that)
- Not cheap
- Hood not provided
- Tele end is sharper than the wide end
- The zoom mechanism gets loose quickly and extends automatically (the lock is useless since it can only lock at the wide end, I wish I could have a lock that can lock freely at any focal length)
評價:
My comments are mainly based on comparison between the Tamron 18-270 VC and the Canon. I must say that before using the Canon I was satisfied with the Tamron. The tele end sharpness of the Tamron is just so-so but it is accetable after some PS. The pictures from the Canon are sharp even looked at original size. Of course we are not comparing with the SWIS II which is unfair. I have used many lenses from both Canon and Nikon and this 18-200 IS does worth every penny! For those who want to carry just one lens with you (especially in these hot days) you should consider this lens seriously. I highly recommend this lens (especially when you are comparing it with the Tamron)
優點:
1. fast focus;
2. easy to manage;
3. good enough for beginer;
2. easy to manage;
3. good enough for beginer;
缺點:
1. no USM;
2. expensive;
3. quality is not the best;
2. expensive;
3. quality is not the best;
評價:
For beginer, it is good enough for all applications : no matter for group photos, outdoor, indoor, close up, children ..... , however, quality cannot match with other professional portrait lens.
優點:
對焦快，is 表現好好，72mm，鏡身硬淨比較pro，有lock，對焦靜，用50d 無黑角。
缺點:
居不送hood，較重，180-200mm時效果不明顯，色一般，不夠sharp，室內暗位不能對焦。
評價:
一句到尾，用得天涯鏡，質素一定不及其他鏡，只是考慮廠品牌，價錢，其實用性。
我就滿意這支野表現，比較之下，咪覺貴law，但我也仍會用canon 的。
相信用50d 用家更會接受這支天涯鏡，除黑角都重要啊！
我就滿意這支野表現，比較之下，咪覺貴law，但我也仍會用canon 的。
相信用50d 用家更會接受這支天涯鏡，除黑角都重要啊！
優點:
This lens does it all for Canon's 1.6x consumer DSLRs. It focuses super fast, zooms from wide-angle to super-telephoto, and gets close enough for macro shots. It could be the only lens you ever need for most Canon DSLRs.
缺點:
On this Canon, the AF mechanism is far more primitive. It's quite a pain to have to stay clear of the focus ring during AF, and have to move a switch to get to manual focus. Poo.
評價:
It\\\'s a great lens, but has one potentially serious flaw in the AF system for many users.
The Canon 18-200 IS has the old AF system that moves the focus ring as the AF works, so you have to keep your hands off of it as it moves.
Worse, cannot turn this ring for manual focus unless you first move a switch to disengage the AF motor.
This is a serious shortcoming compared to Nikon\\\'s 18-200mm VR, on which you the focus ring never turns unless you move it, and which you may move at any time for instant manual override.
On this Canon, the AF mechanism is far more primitive. It\\\'s quite a pain to have to stay clear of the focus ring during AF, and have to move a switch to get to manual focus. Poo.
The Canon 18-200 IS has the old AF system that moves the focus ring as the AF works, so you have to keep your hands off of it as it moves.
Worse, cannot turn this ring for manual focus unless you first move a switch to disengage the AF motor.
This is a serious shortcoming compared to Nikon\\\'s 18-200mm VR, on which you the focus ring never turns unless you move it, and which you may move at any time for instant manual override.
On this Canon, the AF mechanism is far more primitive. It\\\'s quite a pain to have to stay clear of the focus ring during AF, and have to move a switch to get to manual focus. Poo.
