[t_y_c1988]

以呢２部為例～
Canon Digital IXUS 970 IS
http://www.dcfever.com/cameras/specification.php?id=918
Kodak EasyShare DX6440
http://www.dcfever.com/cameras/specification.php?id=315
１．ｗｈｙ感光元件像素＆有效像素有分別？
２．點睇感光元件大小ａｒ？１／大ｄ好定細ｄ好？
３．相當於 135 格式焦距: 33 mm 至 132 mmｖｓ37 mm 至 185 mm
前面個個數係唔係代表微距ａｒ？咁係唔係愈細愈好ａｒ？
咁後面的數係咩黎ｋａ？
４．光圈範圍: F2.2 - F5.6ｖｓF3.2 - F5.7
要點睇ａｒ？有咩用ｋａ？前面個數愈細愈好？後面個數愈大愈好？
５．快門速度: 1/2200 至 4 秒 ｖｓ快門速度: 1/1600 至 15 秒
又點睇ａｒ？邊個好ｄ？
幫下我ａｒ～唔該晒～

[maximilianyuen]

１．ｗｈｙ感光元件像素＆有效像素有分別？
http://www.dpreview.com/learn/?/key=Effective_Pixels

2.點睇感光元件大小ａｒ？１／大ｄ好定細ｄ好？
given the same pixel size, usually the larger the better, because it usually imply less noise and hot pixel

3.
the smaller then number, the wider it is
so 21 mm is wider than 28mm
185 mm can zoom closer than 132mm

4. 前面個數愈細愈好
with F/2.2
you can use ISO 200 and 1/60 shutter speed to take a night street photo without using tripod
with F/3.2....
ISO 400 and 1/30 maybe
thats why 前面個數愈細愈好

後面個數愈大愈好
usually people not too care about it, but still yes
DC usually maximum go to F/11, but DSLR lens may be able to go to F/22

５．快門速度
depends on your need
normal DC user won't consider this problem usually...
but personally I won't buy DC with less than 60sec shutter speed, because I take night scene most of the time

[t_y_c1988]

thanks you so so so ....much ar~
你成日影夜景ａｒ？
大好ｌａ～我買ｄｃ最擔心係影夜景～
我想問唔係係影夜景個時用慢快門嗎？咁點解你話細過６０唔買ａｒ？
唔係個數愈細代表我快門愈慢嗎？
唔好意思，想學下野～

[maximilianyuen]

well, see if you can find out :)

20sec

[maximilianyuen]

60 sec


camera is LX2

[maximilianyuen]

also, having a long exposure time i.e longer than 30

can help you keeping a LOW ISO, e.g ISO 80, ISO 100

and so somehow there will have less noise on photo (higher ISO, higher noise)

[maximilianyuen]

.>>>我想問唔係係影夜景個時用慢快門嗎？咁點解你話細過６０唔買ａｒ？
唔係個數愈細代表我快門愈慢嗎？


影夜景個時用慢快門:
yes, because there is not enough light...

but it really depends on aperture and ISO

e.g

Ricoh GRD2
this one is shot using ISO 400, f/2.4, 1/60 second

that's why 4. 前面個數愈細愈好, the smaller that f/ number, the larger the aperture, and so at the same time more light can go into camera...

>>>唔係個數愈細代表我快門愈慢嗎？
for aperture, the smaller the number the bigger the aperture
for 快門, it is just the number of 秒

1/60 = 1/60秒
1= 1秒

I can't explain in very detail and you should really buy a book about digital camera :)

just buy an easy one to understand the concept, then you will naturally find it out by playing with your camera lol

[t_y_c1988]

low ISO 拍夜景？我以為要ＨＩＧＨ　ＩＳＯ　ＴＩＭ～
因為依家ＤＣ都emphasis high ISO~
仲有higher ISO, higher noise？？？
唔知ｗｏ～thanks for your teaching~
我依家ｃｈｏｏｓｅ左
Panasonic Lumix DMC-FX520
感光元件大小: 1/2.33 吋
曝光模式: 1. 支援光圈先決
2. 支援快門先決
3. 支援手動曝光 ＞＞＞我可以試玩下ｗｏ～
＆　Fujifilm FinePix F100fd
好多人ｓｕｇｇｅｓｔ話影夜景好ｗｏ～
邊部好ａｒ？
help me~!