[hyacinthho]

i say that because 300d cannot choose 測光 method, when you use M mode, you have to use 重點測光, so that flash is not accurate.
anyone can teach me how to use flash on 300d in darkness when you want to smallen the 光圈 and keep 1/100

[Wade]

應該同300D無關wo~ 首先里當時用既(快門&光圈)應該not enough, so 閃燈既output is most important at this moment.

我應該係閃燈ETTL既關係lor~ 首先里要知ETTL既原理先:

閃燈會在里按下快門制, 既快門開之前發出閃光, 反射回相機後, 相機再全info 比閃燈, 閃燈再calculate GN值, 然後先發出閃光.
e.g.
用中間點對焦,對model既eye,然後半按快門,相機唔再對焦(assume select one shot),再除景
Case 1: 最後中間點對焦對暗既物件 e.g.黑色衫
- 完全按下快門制, 既快門開之前發出閃光, 閃光悟意為太暗, 用較大既GN值
=> Too light lor~

Case 2: 最後中間點對焦對光既物件 e.g.白色衫
- 完全按下快門制, 既快門開之前發出閃光, 閃光悟意為光, 用較小既GN值
=> Too dark lor~

Method:
e.g.
把相機中間點對焦,對往里想測光既地方, 然後press <*> key, lock往個測光(閃燈&camera), 再對焦, 然後半按快門, 再除景...


Notice:
Sigma 閃燈用中間點測光only.

[ho0338]

may i know what is it means 再除景 ?

[Wade]

O~ sorry wrong typing.
"取景" - to find a view