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 文章主題 : ZF.2
文章發表於 : 週二 22 12月 09 10:35:46 
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註冊時間: 週五 28 11月 03 23:54:34
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點解得8支?

http://www.cosina.co.jp/seihin/cz/zf.2/zf.2.html

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註冊時間: 週日 16 1月 05 21:33:06
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或者仲有唔少ZF.1係倉底!


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文章發表於 : 週二 22 12月 09 15:42:45 
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註冊時間: 週五 28 11月 03 23:54:34
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jcmthk 寫:
或者仲有唔少ZF.1係倉底!

我仲以為25/2.8ZF可以成為Rare Item, 升值十倍添! :lol:

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文章發表於 : 週二 22 12月 09 15:50:38 
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Terry Sham 寫:
jcmthk 寫:
或者仲有唔少ZF.1係倉底!

我仲以為25/2.8ZF可以成為Rare Item, 升值十倍添! :lol:


呢個夢我都發唔少...
不過多數係惡夢收塲...


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文章發表於 : 週二 22 12月 09 21:46:09 
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註冊時間: 週三 04 5月 05 21:31:11
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其實我睇左都唔明ZF跟ZF.2既分別...

如果我用d700, 係唔係ZF同ZF.2既分別只係有EXIF data? 定係我手動set左先插ZF鏡, 其實就係一樣?


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文章發表於 : 週二 22 12月 09 21:56:23 
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註冊時間: 週日 16 1月 05 21:33:06
文章: 617
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Richard Tam 寫:
其實我睇左都唔明ZF跟ZF.2既分別...

如果我用d700, 係唔係ZF同ZF.2既分別只係有EXIF data? 定係我手動set左先插ZF鏡, 其實就係一樣?


ZF.2 has electronic contacts which allows your D700 to read the Lens Data from the lens, straight off the shelf. This makes the lens equiv. to Nikkor AI-P.

ZF.1 has no electronic contacts, hence user MUST set the Lens Data. For example, if you change your lens from 50/1.4 to 25/2.8 without manually set the Lens Data accordingly, then all Auto Exposure Measurement would be off by 2 stops. (Since 1.4 and 2.8 are differ by 2 stops.) This is more serious than the inaccurate EXIF data.
ZF.2 would eliminate this problem once for all.


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文章發表於 : 週二 22 12月 09 22:58:40 
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註冊時間: 週六 08 11月 03 07:56:21
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jcmthk 寫:
Richard Tam 寫:
其實我睇左都唔明ZF跟ZF.2既分別...

如果我用d700, 係唔係ZF同ZF.2既分別只係有EXIF data? 定係我手動set左先插ZF鏡, 其實就係一樣?


ZF.2 has electronic contacts which allows your D700 to read the Lens Data from the lens, straight off the shelf. This makes the lens equiv. to Nikkor AI-P.

ZF.1 has no electronic contacts, hence user MUST set the Lens Data. For example, if you change your lens from 50/1.4 to 25/2.8 without manually set the Lens Data accordingly, then all Auto Exposure Measurement would be off by 2 stops. (Since 1.4 and 2.8 are differ by 2 stops.) This is more serious than the inaccurate EXIF data.
ZF.2 would eliminate this problem once for all.


What you mention about ZF.1 is completely wrong........

To my experience on D3 and S5 Pro........if you do not set the lens data from the menu that would simply result in wrong EXIF data only

TTL exposure in all cases would not be affected.

The reason is:

1. The metering system is always TTL, no matter the lens is f/1.4 or f/2.8, what does matter is the EV value always for ISO & shutter speed combination. (You may think of the situation of using modified lens on Nikon DSLR of D200/D300 or above, A mode just work fine without the input of any lens data)

2. The aperture ring of Nikon AIS / ZF.1 would feedback the aperture ring information mechanically back to the camera body (only on D200/D300 or above models), so that when you stop down the aperture ring, the camera body would know how many stops had been turned actually and adjust the shutter speed accordingly (as compensation).

3. Think about the situation in F5 and older models.........there is a small optical window in the viewfinder to let you actually "see" the aperture setting.....

To me the good thing of ZF.2 is

1. No need manual input of lens data (but for EXIF only)
2. Using control dial on body to set aperture vlaue (if one prefers....)

And to me the good thing of ZF.1 is therefore:

1. Allow setting of aperture value by aperture ring mechanically (For Nikon AI-P / ZF.2 with CPU, the aperture ring must be set to smallest aperture value for A / P mode to operate)

2. More classic look with the "Prong style meter coupling " lever

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文章發表於 : 週三 23 12月 09 01:18:47 
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註冊時間: 週日 09 11月 03 02:22:35
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wah 寫:
1. Allow setting of aperture value by aperture ring mechanically (For Nikon AI-P / ZF.2 with CPU, the aperture ring must be set to smallest aperture value for A / P mode to operate)

2. More classic look with the "Prong style meter coupling " lever


for 1., but at least you have P mode in zf.2, but not in zf.1 though you can turn the F ring? :twisted:

some ppl say you have to set the aperture value for correct ttl flash exposure for zf.1, then +1 pt for zf.2?

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文章發表於 : 週三 23 12月 09 03:33:50 
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註冊時間: 週四 27 11月 03 02:15:48
文章: 3194
來自: Moon Base Alpha
the 25mm is not in there because Zeiss is now recomputing and redesigning the lens .. :wink:

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文章發表於 : 週三 23 12月 09 09:04:46 
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Brian 寫:
wah 寫:
1. Allow setting of aperture value by aperture ring mechanically (For Nikon AI-P / ZF.2 with CPU, the aperture ring must be set to smallest aperture value for A / P mode to operate)

2. More classic look with the "Prong style meter coupling " lever


for 1., but at least you have P mode in zf.2, but not in zf.1 though you can turn the F ring? :twisted:

some ppl say you have to set the aperture value for correct ttl flash exposure for zf.1, then +1 pt for zf.2?


For P mode for sure it is only available if CPU is present........

To me I enjoy using P-mode ever since CONTAX for causal shooting, but as an "old soil guy" I am still not feeling comfortable for setting the aperture through the dial on the grip.......

But it is not true for TTL flash, as I mentioned again TTL = through the lens......the TTL flash sensor usually is located on the lower part of the mirror box

It would be true only if you would use the Auto mode for Nikon flash, for which the light sensor on the flash (externally) would require aperture value for output calculation. This can be done either by input on the flash menu directly, or setting the non-CPU lens information so that the flash can read from the camera body......

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文章發表於 : 週三 23 12月 09 09:09:30 
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FR 寫:
the 25mm is not in there because Zeiss is now recomputing and redesigning the lens .. :wink:

Yeah, 有兩個Versions玩! :twisted:

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文章發表於 : 週三 23 12月 09 11:38:03 
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註冊時間: 週日 09 11月 03 02:22:35
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wah 寫:
It would be true only if you would use the Auto mode for Nikon flash, for which the light sensor on the flash (externally) would require aperture value for output calculation. This can be done either by input on the flash menu directly, or setting the non-CPU lens information so that the flash can read from the camera body......


Auto-mode, then :wink:

still, wondering if u can cover the contact of zf.2by tape, then u can turn it into zf.1! :P you can sometimes be old soil, sometimes be trendy then!

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文章發表於 : 週三 23 12月 09 19:06:16 
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註冊時間: 週六 08 11月 03 07:56:21
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Brian 寫:
still, wondering if u can cover the contact of zf.2by tape, then u can turn it into zf.1! :P you can sometimes be old soil, sometimes be trendy then!


That is true! :lol:

It is because AI-P / ZF.2 is still compatible to older models like F3 mechanically (on the other hand the CPU "overrides" the function of the mechanical metering couple ring when the camera body read the CPU..........)

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文章發表於 : 週三 23 12月 09 19:19:48 
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註冊時間: 週日 16 1月 05 21:33:06
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wah 寫:
jcmthk 寫:
Richard Tam 寫:
其實我睇左都唔明ZF跟ZF.2既分別...

如果我用d700, 係唔係ZF同ZF.2既分別只係有EXIF data? 定係我手動set左先插ZF鏡, 其實就係一樣?


ZF.2 has electronic contacts which allows your D700 to read the Lens Data from the lens, straight off the shelf. This makes the lens equiv. to Nikkor AI-P.

ZF.1 has no electronic contacts, hence user MUST set the Lens Data. For example, if you change your lens from 50/1.4 to 25/2.8 without manually set the Lens Data accordingly, then all Auto Exposure Measurement would be off by 2 stops. (Since 1.4 and 2.8 are differ by 2 stops.) This is more serious than the inaccurate EXIF data.
ZF.2 would eliminate this problem once for all.


What you mention about ZF.1 is completely wrong........

...


Interesting. I always wonder the otherwise. Thanks for the correction.


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文章發表於 : 週六 26 12月 09 07:32:14 
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註冊時間: 週日 18 4月 04 11:08:03
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Can I use ZF.2 on my Nikon D80?


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