[bzboy]

Normally...it's ok. had check with Canon show roon technician.
But if you can remember pls try to off is better.

[Obi-Wan]

王迦南
"我在行人過路燈是紅燈時過馬路遠遠超過2000次，still don't have any problem wor，is it OK？ " u are not electronic device, right??

[Thomas1]

如 Obi-Wan 師兄所說.

我影時裝展, 自然地沒有off ,就換鏡. 真係唔想錯失機會.
事後想返,沒有off. 但當時是好自然去做.

等on 和off 的dust remove 時間, 是唔想等......

平時盡量off 先,有時好自然忘記off就換......哈哈

[王迦南]

Yes, I am electronic device.

我見到靚女肯定過電的！

[王迦南]

其實我和大多數拍友一樣，好多時都係忘記關機便換鏡頭，因為電流訊號相當微弱的緣故，一般都係冇問題的，就正如我所說紅燈時過馬路一樣。


但這並不代表是正確，一樣會有出事的機會，如果我記得的話，我都係會關掉電源才換鏡的。


最好都係睇睇說明書啦！買相機時廠商要你買埋這本說明書的。

[Obi-Wan]

just asked my old friend with two 1DsMark3

"have u ever switched off your camera when changing lenses?"

he replied "nope, haven't mentioned it in the manual, if it happens to be out of order, I'll buy a new one"

[shinji_kk]

A friend of mine is a full time photographer. He usually changes lenses for 50-80 times for a full day job. He has been using this set of camera / lenses for more than 2 years and still no problem so far.

Also, he did the same thing to his last set of camera gears and no problem as well.

I wouldn't say it's the correct way to change lenses w/o turning off the camera, but the above example is a real experience. Just do whatever you feel comfortable with... :)

[loadsam]

Canon showroom d staff都係開住機換鏡。

[reflexboy]

唔係鼓吹我o既習慣, 不過每樣事件o既背後都會有依據, 所以我好想知如果唔關機換鏡, 最有可能會o係相機o既邊部份出現問題?

[王迦南]

亦係一般既電器常識，若不關機便拔、插鏡頭，相機及/或鏡頭的電子部份，可能有不可預期的損毁。


祇是可能有損毁，但不一定發生。正如你現在立即強行關閉電腦的電源，也不一定有不良的影響。


而且因為電流相當微弱，發生損毁的機會極低。

[reflexboy]

電腦唔關機拔電制插頭會引致個os有corrupted data出現, 令電腦boot唔到機! 呢個好清楚! 上面亦有人講USB 沒有在 windows unmount 左先抆走是有機會冇哂data. 呢個亦好清楚!

但係一般既電器常識，若不關機便拔、插鏡頭，相機及/或鏡頭的電子部份 "可能有不可預期的損毁" 呢個講法太空泛! 而空泛o既地方就係我正正想知o既地方!

o甘不如o係道做個poll問吓有邊位師兄曾經因為沒有關機換鏡而出現問題,同問題出現o係邊道? ok?

[Obi-Wan]

"o甘不如o係道做個poll問吓有邊位師兄曾經因為沒有關機換鏡而出現問題,同問題出現o係邊道? ok? " <==== 100% agree

When I used SSP china made extension tube to shoot macro with EF lenses, I set the aperture, press the preview button, unmount the lenses while the camera is on, the result is what I want ----- the aperture would close to the f stop I set, I then can use that f stop to shoot macro. I've done this many many times, no 不可預期的損毁!

Many forum people give their opinions WITHOUT actual experiment or practice.

My own experience: NO DAMAGE SO FAR on the following camera A100, D60 (canon), 300D, 350D, 10D, 20D, 30D, 40D, 50D, 5D, 5D2, D200, D40X, E500, E510 with over 20 different lenses including D200+50/1.8D & 80-200/f2.8D (these two lenses without motor)

If someone said "可能有不可預期的損毁", could he post his experience & got damage to clarify ????

[王迦南]

投票？投票結果代表些甚麼？我以為是代表民意取向而已！

投票結果可影響特首選舉的方法嗎？還是投票結果會改變科學結論？

我第三次提出了，不如睇下說明書有冇寫先啦！如果說明書的確冇寫，那可放心作熱拔插了。

亦有網友出說明書是保障生產商自己，那麼，為何要關機拔插才較有保障？即係可能有問題啦！

我忽發奇想，會唔會有人話自己用過100款機，拔插過鏡頭100萬次，一樣冇問題，放心啦！然後自己都係謹慎行事，記得既話都係關機先好，睇下你班友仔邊個領野先？嘻嘻！

[rickwok]

都有吾少人講過電器吾好成日開/關，講左幾十年tim，如果咁樣壞又點計？

[william_lau]

其實真係可以放心，如果會對相機有不良影響，說明書一定會有警告。
以5d2的說明書為例，在「安裝及移除鏡頭」的步驟中，提都冇提過要熄機。