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85mm f1.4 D - Magenta foreground, Green background


tom_luongo1

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I'm noticing a some purple halos on out-of-focus edges in the foreground and

green on out-of-focus edges in the background.

 

I'm pretty sure this normal for the 85/1.4 wide open (based on the Photozone

review) But it seems like an undesirable quality for such an expensive piece of

glass.

 

I really like the build of this lens but I'm pretty sure that I'm going to send

it back.

 

Does anyone else have specific experience using the 1.4?<div>00O3Pk-41057584.jpg.951573b154bd58732f3a29e338d12acf.jpg</div>

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Thanks Marke. These are fairly tight crops. On the full-frame image, the purple-green isn't obvious on If I return it, I'll likely get the 1.8

 

There is an earlier discussion comparing the two here - http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=005Y11

 

Could you tell me if the focus scale window in your copy has any looseness to it?<div>00O3Ql-41059584.thumb.jpg.8342f98d97a4c433b39cbfaba4c8db92.jpg</div>

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Ellis, that's the second time recently I've seen you say that ACR can correct longitudinal chromatic aberration. It can't, as lens designer Brian Caldwell points out here: http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=00NGVm

 

Tom - lateral chromatic aberration would cause red/green on opposite sides of a contrasty object - basic red and greeen don't get magnified the same amount, so you don't see it in the middle of time image, but you notice it at the edges. Solution - shrink either the red or green image to make them the same size - easily done in software. Stopping down the lens has no effect (aperture has no effect on magnification).

 

This image has longitudinal chromatic aberration - same colors don't get focused to the same point. So you get the problem in out of focus areas, across the image -- here red in front of focus, green behind point of focus. Much tougher to correct in software. But you can help alleviate by stopping down the lens (smaller apertures make depth of field greater).

 

I'm not an optics guy. See http://www.vanwalree.com/optics/chromatic.html for more info

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I was trying hard to achieve result similar to your "aiwa" picture with my 85/1.4 AF Nikkor lens, and was not able to get your color deviated image on D200. I do not think this is the lens propertly in general ?, it could be more specific to your lens specimen and the CMOS sensor? Possibly your lens was subject of a "heat shock" ? or abuse ? Did you get the lens used or new ?
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<p>Frank, were you shooting at f1.4? Needs to be a high contrast subject. In my case, I was shooting near the minimum focus distance too. I'd be interested in seeing your result.

<p>

New lens from a reputable New York store. Better than average symmetry on the aperture blades when stopped all the way down.

<p>

The <u><a href="http://www.photozone.de/Reviews/Nikkor%20/%20Nikon%20Lens%20Tests/220-nikkor-af-85mm-f14d-review--test-report?start=2">85mm f1.4 review at photozone.de</a></u> has two sample photos that show similar fringing. See the statue photos.

<p>

I used it for some portraits earlier tonight but just got back and haven't looked in detail at the results yet.

<p>

Brian, thanks for the links. I'm aware that the effect goes away at smaller f-stops. But other than a brighter viewfinder, that would eliminate the advantage of an f1.4 lens.

<p>

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