拍寫  再想一想
"不必像AS一樣需要做出更大的成像圈"
這一句話說得不太對

小弟耍白吃

要地
成像圈太小，就會跑到成像圈外面（成像圈不會移動，裡頭的影像才會移動）
所以KM才會配一個可以用在全幅上的鏡頭

個人猜測
如果KM推出aps鏡
很有可能
１　無法使用AS
２　只能在靠近望遠端的一半使用AS（這是考慮到光學設計所做的無責任猜測，不過如果真的是這樣也好，因為重要的是望遠端）
３　雖然能使用AS，但是由於還是要做出較大的成像圈，所以規格上無法太漂亮

我想白雲兄想太多了，KM怎麼可能會推出不完全能用AS的專用鏡砸自己的腳？成像圈做大一點規格為什麼就無法太漂亮？

不過這樣價錢就會更貴，不是嗎??
=>價格只要比原來全片幅的鏡頭低不就好了？

而且，會拿來和別廠的同規格aps鏡比價的人更多吧
=>ex:Nikon 18~70DX VS Tamron17~35f2.8~4
35~70mm沒有就是沒有，比價格有用嗎？

小弟是KM的支持者，別誤會喔！！

我覺得AS是很棒的設計，它直接充分利用大家手上擁有的全幅鏡的成像區
來達到防手震的效果
不過請認清如果真的要做aps鏡還要能AS，那麼成本必然比不用AS還高的事實。

不過我一點也不在意如果真有那個一兩顆鏡會貴那麼一些，因為其帶來的方便對我來說是值得的。

To Ducknest

Thanks for the link - interesting review by that guy.
But he finally admited it was E-1 being reviewed not E-300 when asked by other forum members. A careless mistake.

He also said D70 viewfinder is second bright to KM but I find it way too dark lacking sharpness in any sense. 20D VF is also not as bright but its coarse screen (ground glass like) provides a sharp image in VF - good for manual focusing, I"m afraid MF on D70 is very hard if not impossible (personal experience on 2 D70s.)

Anyway, KM VF has the best brightness among all SLR/DSLR (not a secret). From a guy testing 7D & D7, 7D"s VF is slightly darker than D7 but you can"t find anything brighter for now.

Personally, I love my D7"s bright VF too much! Last time my friend looked through the VF of his F100 + 85/1.4 & my D7 + 85/1.4, his jaw almost droped down to the floor...

I"ve tried an Z3 for a short while to see its AS performance at the long end (one month ago). It is impressive but it"s too short to make a real comparison.

All third party test has to be handled with care & confirmed by yourself if possible. Possible handheld speed is the same while his remark on D70 VF is a little surprise to me.

http://forums.dpreview.com/forums/read.asp?forum=1012&message=10777031

http://forums.dpreview.com/forums/read.asp?forum=1012&message=10777109

Read further down the replies,
That guy likes KM VF, ergonomics, photos directly out of 7D so much (too much, read further down).

http://forums.dpreview.com/forums/read.asp?forum=1012&message=10785821

His choice is for DSLR:

1. 7D
2. D70 (surprised)
3. 20D
4. E1 (also with IS)

AS...最大影響是副廠鏡吧....

像那支規格很漂亮的Sigma 18-50/2.8EX DC似乎就沒有推出Minolta的"計畫"
(原因有可能就是"成項圈太小","邊角失光變嚴重"...等等)
--
不過說真的..影響應該不會太大
例如..沒有Sigma 18-50/2.8EX DC,還有Sigma 20-40/2.8EX DG可以選