[mick_heung]

而家係咪有兩枝的?
一枝係dg version,一枝冇的,right?
想睇下兩枝的分別
係d70用唔用到唔係dg version果枝
and邊枝好啲,thx

[Philippe]

仲有一支有Macro的,D70支支都用到,有DG應該好啲.

[mick_heung]

其實dg or not有乜野大分別?

[cclee001]

LENS TECHNOLOGY (Come from Sigma)

ASP (Aspherical Lens)
The aspherical lens complex allows freedom of design, improved performance, a reduced number of component lenses and a compact size.

APO (APO Lens)
In order to attain the highest quality images, the APO lens has been made using special low-dispersion (SLD) glass and is designed to minimize color aberration.

OS (Optical Stabilizer) Function
This function utilizes a built-in mechanism that compensates for camera shake. It dramatically expands photographic possibilities by alleviating camera movement when shooting by hand held camera.

HSM (Hyper-Sonic Motor)
This lens uses a motor driven by ultrasonic waves to provide a quiet, highspeed AF.

RF (Rear Focus)
This lens is equipped with a system that moves the rear lens group for highspeed , silent focusing.

IF (Inner Focus)
To ensure stability in focusing, this lens moves the inner lens group or groups without changing the lens' physical length.

Conv (APO Teleconverter EX)
This lens can be used with the APO Teleconverter EX. It can increase the focal length and will interface with the camera's AE (automatic exposure) function.

EX (EX Lens)
The exterior of this lens is EX-finished to denote the superior build and optical quality, and to enhance its appearance.

[b]
DG (DG Lens)
These are large-aperture lenses with wide angles and short minimum focusing distances. With an abundance of peripheral illumination, they are ideal lenses for Digital SLR Cameras whilst retaining suitability for traditional 35mm SLRs.
[/b]

DC (DC Lens)
These are special lenses designed so that the image circle matches the smaller size of the image sensor of most digital SLR cameras. Their specialized design gives these lenses the ideal properties for digital cameras, the compact and lightweight construction is an added bonus ! including compact and lightweight construction.

[Steve_cheung]

睇落Sigma 將會出o既 幾好wor︰Sigma 70-200mm F2.8 EX DG Macro HSM (好期待！）

Sigma Company: http://www.sigmaphoto.com/lenses/lenses_all_details.asp?id=3316&navigator=3
（不過冇MTF 睇！）
DG 版就有 MTF 睇︰http://www.sigmaphoto.com/lenses/lenses_all_details.asp?id=3306&navigator=3

冇計，原廠鏡頭實在太貴，買唔起！

不妨等出咗先致考慮買啦！ 睇吓人哋O既評語點講！

Link 1: http://www.dpreview.com/news/0602/06022610sigma70200.asp
Link 2: http://www.dcview.com.tw/article/newreadarticle.asp?id=4415
LInk 3: http://www.dpnet.com.cn/news/news.asp?id=11494

[rs20461997]

新同舊好似差成千

除左 $$$, 就唔知差幾多lu

[cherrykenny]

各位影友/靚靚model們：
好消息，一個專為各位而設的平台已經上線，內有供给大家暢所欲言的討論區和各樣的貼圖區等等，為了令本會能夠盡善盡美，歡迎各位参觀和發表意見，謝謝！
http://www.photostation06.com

[mick_heung]

我覺得冇dg果枝係咪film都用得?
then 有dg果枝如果用係full fram度maybe有黑角
將來如果向full frame發展
係咪冇dg果隻好啲呢?

[wtfgary]

有dg果枝Full Frame都可以使用。