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Author Topic: The Zeiss 18mm ZF  (Read 2620 times)
NikosR
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« on: September 05, 2008, 09:25:09 AM »
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Michael,

Judging from your wording and from the exif info overlayed on the sample image, I think you might not have bothered defining the lens to the camera as a non-CPU lens.

Had you done that, aperture and focal length info would have been displayed correctly (and BTW matrix metering would have worked OK without reverting to centerweighted instead, which is what happens when you mount an undefined non-CPU lens).

At least this is how one is supposed to work with Nikon's own AI and AI-S lenses and I believe the Zeiss ZF line are supposedly AI-S spec.


EDIT: I now see you have mentioned the non-CPU definition functionality in your article, I wonder why I missed this paragraph when I first read it. Was it there from the start?  

Nevertheless, maybe you should also point out that matrix metering does not work without defining the lens as a non-CPU lens.
« Last Edit: September 05, 2008, 10:15:09 AM by NikosR » Logged

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JeffKohn
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« Reply #1 on: September 05, 2008, 10:09:54 AM »
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I didn't see that paragraph there the first time either, I think it was added. Setting up the lens data is important not only for aperture display on the camera and in the EXIF, but also for correct metering.
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Sunesha
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« Reply #2 on: September 05, 2008, 10:17:34 AM »
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Interesting lens. Held up just fine against the proven 14-24.

Just a thing that bugs me. Which I always find interesting is how flare sensitive a lens is. Which rarely report in lens testing.

14-24 is quite good on flare part considering its bugeye design. But I havnt got any report how the Zeiss holds up in this department.

Cheers,
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Daniel Sunebring, Malmoe, Sweden
Homepage: Sunesha.se
Non-native english speaker and dyslexian, so excuse my mistake in grammar and spelling."
NikosR
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« Reply #3 on: September 05, 2008, 10:18:26 AM »
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Quote
but also for correct metering.
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Metering is correct without the lens data in. It is just that matrix metering does not work. If it did, then it might not have been accurate without the max. aperture and focal length info.
« Last Edit: September 05, 2008, 10:18:45 AM by NikosR » Logged

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Graham Welland
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« Reply #4 on: September 06, 2008, 05:51:12 AM »
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I've been using the Zeiss ZF lenses for a while now and I can confirm that Michael cannot have set the non-CPU settings for the lens. As mentioned by others, if you set the focal length and maximum aperture value you WILL get the correct EXIF and f/stop information displayed in the viewfinder. I use them with both my D3 & D700 and the behavior is the same with either camera if you set it up correctly.

I think Michael/Chris needs to update the review because it's factually incorrect.
« Last Edit: September 06, 2008, 05:53:27 AM by gwelland » Logged

Graham
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