jenhoxen wrote:Agfa Automatic 66靠頂上矽元件與太陽光產生微電作用，微電強弱會產生齒輪的轉動幅度，從而拉扯連結的鐵絲，這鐵絲控制快門速度的感電觸盤，拉扯的長短，剛好轉動感電觸盤的位置，不同位置相應不同的快門速度，這台相機的經典之處便是在還沒有電子時代的相機來臨前，完全機械的光圈先決，是史上第二台這樣設計的相機，第一台是柯達在前一年做出來，不過故障率高，因此成熟的光圈先決機械相機屬於Agfa這台
那它額頭上那塊格狀玻...(恕刪)
http://www.certo6.com/images/28.jpg
旅遊,攝影,搖滾樂
ych_2000 wrote:
就我把玩過這台的經...(恕刪)
我的意思是"光感應電池也是電池",拿一兩個特例把相機的[自動]和[電池]作切割,建立一個"也有不用吃電的自動相機"的觀念,我認為不是很恰當~~當百分之99.9的光圈先決相機都是電磁快門,消費者今天在二手市場上拿到一台機身快門或光圈上有A,就該聯想到它沒電池不能正常工作\如今有沒有替換零件\能不能修復這些實務問題,若沒有[看見A就想到電子問題]的警覺,就不好了.
今天的消費者很多已經搞不清楚何謂"純機械"相機了,以為看到轉盤、手動上片就叫機械式,完全缺乏基本判斷能力;何必再用類似物理學上"正子或強子存在10的負幾秒也叫存在"的方式討論呢
conooma wrote:
Agfa Automatic...(恕刪)
維基百科解釋自動原理的文字當中,紅字部份似乎有提到空氣所扮演的角色,不知可否指教:
Auto-exposure
The film speed (set on the meter, in the top housing) and aperture controls both adjust variable resistances that bias the meter output. In the user's manual, the meter's linkage to the shutter is compared to a cylinder air pump, with a spring-loaded piston, and a variable-diameter air inlet port.[2] The meter output determines the size of this air port, and the flow of air through it acts as an escapement mechanism, determining the delay before the shutter closes. The mechanism is in fact not Agfa's invention: it was the subject of a patent by the Italian firm Durst,[3] who made their own 35 mm viewfinder camera, the Automatica, using a similar mechanism.
00667904 wrote:
pentax es 就是機械快門光圈先決的相機，世界還是很大的，看你一直挑釁我只好google一下，麻煩您再對這台相機雞蛋裡挑骨頭一下
這樣就叫[一直挑釁],我才覺得你是[找碴]叻~~本樓樓主明明要找[輕便不吃電底片机],蓋到第三層答案也已經很明顯了,就是如理光ZF35那一類的機種(也麻煩您自己去了解一下本樓發展脈絡吧)~~後面又抬這些"阿祖"級的机型出來根本是歪樓平方有找了.
您給的連結,請看開宗明義第一句,我替您用紅字標出來了--玩人也不是這個玩法吧?
Description:
The Pentax ES was the world's first 35mm SLR with a fully electronic shutter system. When set on automatic, the ES has a stepless shutter. The Pentax memory device computes and delivers an infinite number of exposures between 8 and 1/1000 second - automatically. If 1/555 second will give you the right exposure, that is what will be programmed.
The Pentax ES utilizes the last generation screw-mount Super-Multi-Coated Takumar and SMC lenses. In addition to the legendary flare control and color fidelity that has made these lenses so popular, the S-M-C/ SMC lenses are designed to allow open aperture metering on the ES, ES II and Spotmatic F. The viewfinder remains bright under all conditions, making focusing easy. In the event that earlier lenses without the open-aperture metering coupling, the ES provides stop-down metering with the familiar switch near the lens mount. In any case, the meter is activated by partially depressing the shutter release button. These features make the ES less than one-quarter inch taller and only six ounces heavier than the Spotmatic F.
The standard color for the ES was black, which was a departure for previous Pentax M42 bodies where black was a special order. With both the ES and ES II, chrome was the special order version. The ES name on the face of the body replaced Electro Spotmatic on the earlier model released only in Japan and had improved circuitry. The size of the circuits did not allow room for a self timer in the ES.
Read more at: http://www.pentaxforums.com/camerareviews/pentax-es.html#ixzz4I8OJaB80
jenhoxen wrote:
這樣就叫[一直挑釁]...(恕刪)
明明就斷章取義，他下面圖示也有說明，因為相機維基
In AE, shutter speed is continuously variable from 8 seconds to 1/1000 second Mechanically timed shutter speeds 1/60 - 1/1000 second and 'B' can also be set manuallyNo delayed actionShutter cocked by advancing the film (shutter-cocked indicator: red dot in window next to shutter release)
他的B快門以及60-1000是機械式的，如果你認為這樣不合格我也沒辦法
http://camera-wiki.org/wiki/Pentax_ES
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