-銳利 : 對,真的好Sharp ! 真係可以數毛！仲要係眼眉毛！哈！
好在我部機身可以tune銳利度，唔係Ｄ靚女一定唔俾我影呢數！
-重量 : 好適中, 610g有人說鏡重, 我真係唔知點樣才算輕? 膠鏡我始終覺得輕飄飄!質感不足!
放少幾塊鏡我又覺得好呃錢, 還是這樣聚手少少比較好!
-造工: 合金BODY. 好紮實, Made in Japan
變/對焦二環有包橡膠.幾好擰,尤其對焦環好順好就手. 反而變焦環靠後咗一些, 相對無
咁就. 不過3倍幾變焦, 都唔使點樣擰來擰去!
-外型: 鏡型一流,有線條, 平衡感好好!　ＮＩＫＯＮ所有頂級鏡都系咁嘅型！好靚仔！
-解像 : 解像力好強，這方面一向是副廠鏡當中表現比較好的牌子, 論品質絕對跑得贏,其他兩
支副廠 T記支17-50mm 和Ｓ記支18-50mm f/2.8.若然有輸的就是貴佢哋千幾銀!　
性價比唔夠高! 不過求質數的話,　應該交得到!
-對焦 : 支鏡本身無馬達，不過仍然對焦好快! 好準! 可能跟機的配搭有關吧! 唔錯!

-變焦時鏡筒伸得幾長, 咁短的RANGE唔應該囉!
-廣角大光圈, 拍風景的機會比較多, 蓮花罩好大,　雖然內有絨面吸光，但真系好大，加了
CPL轉動唔方便!
-又系ＤＸ格式． 圖記想晉升為高級組.下次應該試試出支ＦX格式囉！唔係求其加個金圈就算！
-無防震．唔覺有紫邊．不過好多師兄都講有,我都唔敢challenge,不過由１２４到１１６到這支１６５都沒有改進．仍然未解決！
-無低色散鏡．無超聲波對焦馬達，佢兄弟Pentax DA★ 16-50mm F2.8 ED AL (IF) SDM有齊．都係貴三千元左右咋！（所以我好容易原諒咗佢）

我用過支鏡拍婚禮, 最近對焦距離只有0.3M 我拍接新娘一齊係門口迫的時候. 真的發揮得幾好！
16mm 的確有ＤＤ桶變, 超廣角應該是這樣的吧? 原廠鏡支17-55mm在17mm端都變啦! 我拍跳過, 唔見得會輸蝕呀!　應該說叮當馬頭，但價錢就貴兩倍！
講到廠鏡，17-35mm f/2.8D IF-ED賣幾錢先？不如買支17-55mm
講到支18-70mm f/3.5-4.5根本無得跑, 輸光圈已經輸死！.已經長眠防潮箱了! 可能我的技術太垃圾, 累到支鏡都變埋垃圾.
Tokina出産的鏡品種唔多,不過支支好野, 今次是有D 測試市場感覺,價錢挑戰新高！ 咁樣的配置．真系叫貴咗成千銀, 不過依然有捧場! 真係暈暈哋！不過大家可以想像它的品質去到邊! 一向副廠鏡二手價唔多頂得住, 跌一千都差唔多啦, 支原廠17-55mm 平兩三千都有, 仲周地貨添! 諗起我就喊到收唔到聲!
不過有時返大陸粗用.平平哋帶支Tokina.又有廠鏡九成幾功力.絕對值得擁有!

支鏡既marco很好用好sharp ，wide鏡控制变形情况很好。

支鏡sharp到有點兒界手，真係出奇的靚.
絕對係Tokina 誠意之作.
物有所值.
有興趣走去呢條link 睇睇我用支鏡既相.

http://www.flickr.com/photos/painttools/sets/72157605678563990/

若果真係要找缺點，係室內環境影得冇室外咁好.

呢支鏡我考慮左好耐，又好少見師兄用，個個都話龍仔好而且支鏡仲貴過龍仔千幾銀，不過我本身用開支tokina 12-24mm質素相當好所投以信心一票。
睇過前面有兩位師兄踩支鏡踩得咁低，真要為支鏡作過評反.

支Tokina 16-50mm用落十分暢順手感很好對焦很爽.
係一支甚高光學質素的鏡頭.

Absolutely faster AF speed than TAMRON's and SIGMA's 17-50/55 2.8 (no build-in motor)
Solid matel feel, nice weight as heavier lens give more stable handling.
One Touch Focus Clutch Mechanism, fast AF to MF change without set in the body.

Overall length of the lens will change when zoom
F/2.8 seems only to use when using in dark situation. (Quality really dropped a lot from F/4.0)

This is my long awaiting standard zoom (DX format) since Nikon's is too expensive in my own viewpoint (I rarely use this range)

好sharp, 色靚, 對焦準, 鏡身?實

重..真係好重..支鏡仲重過部D80..價錢貴

用左三個月都覺得支鏡幾好.
可惜價錢比較貴,不過造功係比其他副廠鏡?實..可以話好有"質感"

好Sharp，真係好Sharp，葚至有啲相仲Sharp過我支Canon 17~55mm f2.8 IS USM添！
鏡身紥實，好有PRO FEEL！
較同級鏡頭有更濶的廣角！

價錢略貴，但較同級副廠鏡有更濶的廣角端。

查實這支鏡頭並非我所購買，是我從朋友借來使用了個多月的，使用後我覺得這支鏡頭手感很好，比我的那支Canon EF-S 17-55mm f2.8 IS USM好多了，而且其光學質素及解像力也沒有令人失望，我覺得比其他副廠的同級鏡頭要好，甚至比騰龍的A16要好，可惜價錢較貴，這點實削弱了其競爭力，可能是其造工及用料成本較高罷！

1. 外型好好
2. 對焦是3大副廠中最少問題
3. 色靚

太多，唔SHARP, 耀光, 變型, 失光, 色散全唔惦

我用左3個零月, 忍左佢好耐, 發現居然同唔少網上報告一樣：
NIKON 18-55 II 同18-70 2支平鏡都仲SHARP 過佢,
唔信可以試下, 真唔惦

1. 外形好看
2. 對焦方面應該是三支(TAMRON 同SIGMA)中最好
3. 個對焦環承襲12-24/4, 十分好用

缺點多到暈：
1. 致命傷, 唔SHARP. F2.8肉到冇命, 收到F4- F5.6都未夠NIKON 18-55 II 同18-70 2支KIT LENS咁SHARP, 收到F8先好少少, F4都唔用得, 點解要咁貴買佢?
2. 紫邊王
3. 抗FARE 低能
4. 變型控制差, 唔係講16MM, 係全段, 35MM打前就桶變, 35MM打後就枕變
5. 16-50MM均有嚴重暗角
6. 貴
7. 二手保唔到值, 我支新鏡$4380入, 放左好耐先$3400出到手, 亦見有其他影友99.9%新的二手價都係十分之低, 因為冇人想入
8. 唔夾閃光燈, 點打都差D
9. 顏色淡, 仲衰過A16

買左既朋友如果用NIKON不妨比六百零蚊買多支 NIKON 18-55 II 試一試, 無論影遠定近, 任何光圈都唔夠支KIT LENS SHARP. 唔1話我支係BAD COPY, 因為唔SHARP, 我已經好無賴咁屈支鏡有問題換過一支, 都係咁. 可以說是垃圾鏡

Good focus accuracy with S5pro, becoz I tried A16 / 18-50 2.8 both have focus problem on S5pro, only this tokina 16-50 is perfectly match.

The lens is very sharp at 2.8 wide open WOW. It is also solidly built, u will be confiendent to use this lens in any situation.

Purple fringing is a minor disavantage of this lens. It is also a bit heavier when compared to A16 and 18-50/2.8. Focus speed is normal / acceptable, which is enough for most scene, but certainly it is not for serious sport photography.

After trying 3 copies of A16 and 4 copies of 18-50/2.8, I am very lucky to find a lens without focus problem on my S5pro!!!

Purple fringing is really a minor problem when the same problem is found on some of the expensive Carl Zeiss ZF prime lens! It is obvious only when u watch the photo at pixel by pixel size. You can hardly discover the purple fringe at 8x12" output.