[scb]

請問失焦是指相機或是鏡頭問題?
如有舊鏡在手, 想買新機要注意什麼?
是不是各牌子各款皆有不同情况失焦?
為什麽以前菲林機少人提及?

[man1492]

多數係機，亦有機不夾鏡之說，也有人為因數

[man1492]

"是不是各牌子各款皆有不同情况失焦?"

走焦唔係前就後，唔夠光，contrast 低就會奶野

"為什麽以前菲林機少人提及? "

因為冇人用菲林機影45度間呎晒18R，好唔化算; 但而家禁方便總會有人影下碗芯影下報紙黎試focus

[peterchan04]

如果 一機 5 鏡...
枝枝鏡影都 "失焦" .... check 吓部機.
但 只係其中一枝 "失焦".... 可能 鏡頭 問題.

重有 日頭光猛猛 "失焦"... 定係 "夜晚太暗" 至 失焦...?
枝鏡係吾係 恆定大光圈 ...? 一話 "光都吾透" 既經濟鏡...?

[bb1032003]

scb,

It depends on what old lens you are talking about, if Canon EF lens no matter how old it is (oldest is 20 years ago), I have three old EF lens (they are 20 years old) all can be used on 300D and 400D of course some newer function like the ETTL-II can't be used.

ETTL-II can't be used because those lens were made before the invention of ETTL-II, simply because those lens can't report the focused distance to the camera body. Actually, some of the current lens mode can't do it eg, 50 1.8 and 50 1.4.

In general function like auto-focus, metering and ETTL can be used.