[詢問] 鏡頭 (Nikon/Canon) 接駁 CCD 能否成無限遠焦?
[詢問] 鏡頭 (Nikon/Canon) 接駁 CCD 能否成無限遠焦?
如果廣角鏡接駁 CCD 相機,會否像 Canon FD 鏡駁 EOS 時無限遠成不到焦? 如果要這樣接駁要注意什麼?請各位指教指教! [跪拜禮]
Re: [詢問] 鏡頭 (Nikon/Canon) 接駁 CCD 能否成無限遠焦?
1. which CCD camera?funoooo 寫:如果廣角鏡接駁 CCD 相機,會否像 Canon FD 鏡駁 EOS 時無限遠成不到焦? 如果要這樣接駁要注意什麼?請各位指教指教! [跪拜禮]
2. Which lens? what lens mount?
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Re: [詢問] 鏡頭 (Nikon/Canon) 接駁 CCD 能否成無限遠焦?
就是什麼都未定,想了解情況!PTS 寫:1. which CCD camera?funoooo 寫:如果廣角鏡接駁 CCD 相機,會否像 Canon FD 鏡駁 EOS 時無限遠成不到焦? 如果要這樣接駁要注意什麼?請各位指教指教! [跪拜禮]
2. Which lens? what lens mount?
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CCD - QHY
鏡頭 - 8mm 至 35mm (俄仔鏡)
Re: [詢問] 鏡頭 (Nikon/Canon) 接駁 CCD 能否成無限遠焦?
As far as I know, the 8mm 至 35mm (俄仔鏡) has long enough back focus for Canon and Nikon DSLRs'. As you have to make adaptor for QHY in any case, there should not be any problem to connect them together.funoooo 寫:就是什麼都未定,想了解情況!PTS 寫:1. which CCD camera?funoooo 寫:如果廣角鏡接駁 CCD 相機,會否像 Canon FD 鏡駁 EOS 時無限遠成不到焦? 如果要這樣接駁要注意什麼?請各位指教指教! [跪拜禮]
2. Which lens? what lens mount?
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CCD - QHY
鏡頭 - 8mm 至 35mm (俄仔鏡)
In Ap Liu St., you can find helical focusing adaptors (42 mm to 42 mm, or 42 mm to 53mm, etc) with different travel lengths.
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The argument is as follows:funoooo 寫:多謝指教!
再請教!
如果接 SPC900NC,能否成焦? [跪拜禮]
If the back focus of the lens is longer than the length of the camera adaptor (i.e. the distance of the lens mount to the ccd surface) then you can always add length and achieve good focus.
On the contrary, if the back focus is shorter than this length of the adaptor, there is no way to get to best focus.
That is the reason behind the following:
The Russian lens has long back focus to adapt to Canon and Nikon cameras (and all cameras with shorter lens mount, such as the 4/3 or micro4/3 system), but not the ones with longer lens mount (such as Hasselbrad, mamya 6X7 or Bronica bodies).
On the other hand, Leica M-lenses cannot be used on Canon/Nikon bodies, but can be used on Lumix GF, G1, GH1, etc bodies.
I hope this will answer your questions.
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