[stocklaz]

請教各位, b 快門是否 bulb? 幾時需要用呢, 如何用呢??

如果有兩部機, 功能效果大約一樣, 分別只在有沒有b 快門, 咁應該買那一部呢...

[dede]

攝影技巧討論區，B 快門？有？用.....
如果.....真的有的話（除了過萬圓的 DSLR 外），我會買有 B 快門的

[dede]

補充：
如果....DC .真的有的話（除了過萬圓的 DSLR 及菲林機外），我會買有 "真正" B 快門的

[stocklaz]

我其實是在想買 nikon 的 f80, 它新出了f75, 其中我就看到不同之處是有沒有 b 快門...

但如果用b 快門, 就一定要用外攝制嗎, 如果唔係, 相機一定會震喎...

[hiboy]

咁一條slr o既快門線又唔係好貴....
dc就好多人都係用slr快門線ge原理自己diy一條
不過問題係b門係咪真係咁常用呢...

[dede]

菲林機的 "失打繩" 妤平的，買條黎用咪唔會郁機囉，
唔同用 DC 要用遙控或 "有線或無線"，

[ninekit]

Bulb in my opinion is very useful. Its quite a must for low light landscape photography, this give you flexibility on control over exposure time. And its also very good fun to take picture of the star trails.
I will suggest you to get one with real B setting camera la, preferably the mechanical type, as the cable release is much cheaper.
Its a shame for my coolpix, though it has Bulb setting but its limited to a max of 5 min. and the electronic cable release cost a fortune.
If you want to buy a film camera, and if AF isn't a must, i will suggest you get FM3A to complement your S602z.
Manual focus, hybrid shutter, excellent build quality. And the Bulb setting doesn't consume power, so you can use it for exposure as long as you like.

[stocklaz]

to ninekit,

想請教的是...... (唔好介意問題比較簡單, 新手黎...)
你有沒有一些用b 快門影的相, 可以供大家看看呢..... 5 分鐘的暴光還不足嗎?? 還有的是.... (我自覺這條最蠢) fm3a 應該係只可以用manuel focus 的lens 可? 是否會比af lens 較難買和會否太貴呢? 還有, 以我用602 的經驗, 好似好多情況, manuel f 都好難喎...... (差唔多唔用腳架就唔得..)

不過其實我係鐘意d 全機械性的相機..... 很有味道

[ninekit]

um .... its a difficult one, though i said night landscape is an interesting topic but i myself have not do it for long long long long time lu. so a bit difficult to dig out a picture taken by myself to show you. however, I think it will not be too difficult to find in internet. In fact the ability to accept cable release is still very important as even in daytime, especially for landscape phototaking, where you may often need to stop down the aperture for more DOF. And especially in dust or dawn time where available light is not enough. So to solve the handshake problem without cable release, friends have to mount the camera on tripod and use self timer to let the camera run (but cannot use Bulb setting this way). To an extreme, some photographer even invoke the mirror lock up feature to avoid the mirror slam tim ar. So all-in-all, a camera with capability to attach a cable release is still quite important if you are into landscape. Well, 5 min, should be enough for most cases in fact, (except star trails I have mentioned which you may expose for hours, I have the experience of the battery run dry this way) but really put me off for the coolpix is the price of the electronic cable release lor. btw, any brothers can tell me whats the price of Nikon MC-EU1 in HK? its GBP 100 out here.
um .... personally i don't think manual focus nikkor is more expensive than its AF counterparty, but bear in mind old designed manual nikkors are mostly made of full metal rather than cheaper plastics, so you pay more for better build and often I heard from friends telling me the manual nikkors optical quality is better. I think its really market driven. while more competition and users in AF mkt, manufactures make cheaper but less good lens to fight for mkt shares, left the manual one a little more expensive, but better quality for the rare group lor.
yes gar, getting a full mechanical manual camera sometimes is about the 'feel' to be honest. i wish i can have a 1Ds for day to day photo taking, and a Leica M6 for sometimes when I have the special mood to make a picture.

[ninekit]

um .. manual focus, in my opinion is not very difficult la. 10 years ago, there is virtually no AF, (no i was wrong, my EOS RT is 1989 model). it really depends on whether you are used to the system or not. with the right focus screen and some better, brighter lens, I think manual focus will not be more difficult than AF. if you are into film SLR, why not get prime lens which is cheaper, lighter, brighter and better quality. if you like landscape photography, you can start with a 24mm F2.8 or 28mm F2.8, if you are into portrait, a 85mm F1.8 will be very good ar. With these much more variables i think you will get more fun from taking picture with an SLR.

[stocklaz]

謝謝指教......

剛剛看完了 fm3a 的spec, 他說可以用af 的鏡喎!?

再問多少少 (雖然已經唔係問b 快門的事 )

影人像唔係應該用 normal 鏡咩?? (50mm with large f.)
為甚麼wide angle 的鏡通常個光圈唔會去到f1.8 這麼大的?? (雖然wide 鏡是用來影景, 都唔會用大光圈 ..)
你是住在日本???

(可惜 602 冇得加快門線...)

[ninekit]

oh yes, i didn't realise you don't already know we can use AF nikkor on FM3A, but not G lens which has no aperture ring. but generally people have not good feeling of doing that, as AF lens usually are very loose and the angle for turning is very small, so that focusing is fast in AF mode, but i manual mode, you will lose the 'hand-feeling' and focus precision lor.
in fact there isn't fixed rules for what mm to take what subject, but depends on how the composition is, most of portrait is head and shoulder, think if u use 50mm, you may need to go quite close to a point may not be v. comfortable for the subject as well as yourself. same if the tele is too long, i.e. you have be too far away and then you will find v. difficult to communicate with the subject lor. thats why generally people like to use sub-100mm for portrait as it keep a comfortable distance.
good question on aperture for wide angle, but i don't know the answer as well. in fact there is a 24mm F1.4 and 28mm F1.8 from Canon, but they are quite pricy.
thanks for asking, i moved to UK since 2003.

[dede]

B 快門最主要的好處是任我控制時間，鍾意幾時停就幾時停，唔同那些限住時間，想中途提早停都唔得，影煙花時你就知啦，煙花放完而個快門仲開住，未夠時間唔停得，咁咪暴光多餘左囉，此乃其中之一的簡單易說明的好處。還有............用黑咭玩野咁，時間長ｄ都易控制ｄ，鍾意幾時再暴光就幾時拿開張黑咭，唔使未攪玩就關上快門。

雖然 wide 鏡是用來影景，都唔會用大光圈 ，但當你在昏暗場合（如酒樓影婚讌）對焦，尤其是手動對焦，又如袛得細光圈，閃燈又唔夠光打咁遠，你便知大光圈有幾正啦。

大光圈的 wild 鏡貴好多，可能要做好多的矯正吧（失真變形）

[stocklaz]

嘩, 多謝各位英雄教路, 小弟獲益不少, 係時間蓄錢買部slr 學下...

to dede 兄,
你比較多在技考區那邊喎, 這邊咁慢都來, 真係多謝啦...

[dede]

係呀，我都係要等到半夜先入黎咋