新進會員
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ccd 是濛糊圈
135菲林的ccd 大約為 0.00003m如有更高的清晰度要求，如設為0.00001m
focal_m 為鏡頭焦距(以m 計)
near 為景深近點(以m 計)
far 為景深遠點(以m 計)
objectd為物距(以m 計)
hyper = focal_m*focal_m/(f_no * ccd);
near=(hyper*objectd)/(objectd-focal_m+hyper);
far=(hyper*objectd)/(-(objectd-focal_m-hyper));
以忙記了從何處找來的 :p
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新進會員
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To: aboutsam
FA43 - about 2650 at man shing (Mongkok)
FA77 - about 4000 at foto (Hunghom)
FA24 - about 3150 at kowloon life (Yaumatei)
All Sep 03 prices.
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新進會員
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>至於景深預觀掣，小弟都有用的，不過小弟覺得這不能清楚顯示景深，
>因為預觀時，景深好像老是比4R相片要深些…
It is a common observation for 135 camera. The 景深 of viewfinder for 135 camera are always too long that make accurate focusing quite difficult. However, camera manufacturer fail to produce viewfinder with lesser 景深. It is especially when using wide angle lenses. That was why when there were no AF in old days, beginners thought that they had focussed to the object when taking photos, however, when they saw the final photo, it was actually not focussed at all.
景深預觀 of medium format camera and large format camera are more accurate with the final photos.
>ccd 是濛糊圈
not "ccd", should be "COC" |
新進會員
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HEY, 如果用FDI晒相, 又加了SHARPENING, 景深又不同了!
純理論的景深計算中, 減去菲林ISO及相紙解像度的關係,
而鏡頭的表現, 如鏡利度及反差, 對景深的表達亦有唔同.
我更懷疑散焦本身亦有一定影響.
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新進會員
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Thx: mickey_mouse |
新進會員
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To news00. I"ve checked the price in 萬成 and Foto. Thanks anyway...
終於有跟我當初的問題的回應了... 香港人.. |
新進會員
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Wlachan had not reply you already in message (2)?
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新進會員
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Yes. He did.
總之. 一隻手拍唔響... |
新進會員
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Chinese are still not comfortable with lateral thinking and brainstorming. |
新進會員
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aboutsam, 有人第一時間回左你問題, 你亦在第二個回應中集中火力到機身定
位, 到了近一百個回應之後你反而話終於xxx, 還加了一句「香港人」!
大哥, 不是你集中火力, 又那會有這些回應呢? 如果說問人浪費了此題,
責任應由你那個定位開始, 而其他回應者只是就定位問題加入意見而已.
至於由DOF引申的問題, 亦源於定位如何而來, 我不當是OFF-TOPIC, 只實討論
中的一些額外資料吧. 討論依然是環繞著MZ-S之下的機種及網友間見解.
當然, 依然有香港人只求答案不求甚解, 我還是覺得...遺憾! |
新進會員
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好! 我要負責任.
>>VIP@CHINA或者有中國航天特別版MZ-6,
＞＞在美國的MZ-L(即MZ-6)是沒有點測光的....
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新進會員
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>機身，MZ-S 下一級是那一個呢? 謝
Are you asking that question?
Hope you always get answer in future.
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新進會員
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Yes. I get my answer here but I think the argue was caused by this:
>>VIP@CHINA或者有中國航天特別版MZ-6,
＞＞在美國的MZ-L(即MZ-6)是沒有點測光的....
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新進會員
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if that 超人 didn"t say that.. There will be no argue.
I remember, long time ago I got a EOS IX and asked for something on newgroups.. .that 超人 just said I"m a fool... I think he"s not polite all the time. That"s my feeling. |
新進會員
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No, I don"t think so. It is by the following. Part of my responsibility. remaining go to VIP@CHINA He is very impolite and my EQ is Low recently.
VIP@CHINA 22) 發表於 - 2003/11/9 下午 12:57:17
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To: "超!"
MZ-10你都叫好, 真懷疑你的智慧和品味.
mickey_mouse 23) 發表於 - 2003/11/9 下午 01:09:50
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simple is beautiful.
VIP@CHINA 24) 發表於 - 2003/11/9 下午 02:49:26
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To: "mm"
你是誰?.
"beautiful"可以用來形容女人, 又可形容藝術品, 但不適用於相機.
因相機是使用工具, 最好能在任何環境都放便操作, MZ-10辦不到, 更沒有構成一張好相片的重要考量功能--景深預觀功能.
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新進會員
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I think we should stop here. Well, some of you are friends and with 牙齒印 with VIP@CHINA. He did answer my question. That is. |
新進會員
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Just my final comment, no matter how people do, one represent oneself only.
I represent myself only but not Hong Kong.
You represent yourself only but not all people from where you are.
So don"t said something like
"香港人......."
"Mainland people are........."
"TAiwanese........"
so my saying "Chinese are still not comfortable with lateral thinking and brainstorming." is a very bad example.
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新進會員
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I did know superman but I don"t have any 牙齒印 with VIP@CHINA before.
And I don"t quite care if he has any 牙齒印 with others. I focus on what people said.
You are very unfair to others who have answered you, even if you like the answer or not. No matter you like those answers or not, others are still trying to help. I don"t like people asking question with such kind of attitudes. |
新進會員
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Hey, how is your APS EOS? Still keep using it??
I just tell what I found on the internet about the MZ-L.
I may be very wrong in any of the message, but I am not going to
fool the others.
And, you should thanks those supply what you needed! If not, you
are the most impolite in this thread because that is you who ask
for the answer.
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新進會員
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有超人之處, 必有爭執. |
