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

Discussion in 'Nikon' started by tom_luongo|1, Jan 17, 2008.

  1. 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?
    00O3Pk-41057584.jpg
     
  2. Another image.
     
  3. Normal, mine does it as well, although Ive never seen it quite to this quite to this degree.
     
  4. 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?
    00O3Ql-41059584.jpg
     
  5. I was recently told by a moderator that it's because of the sensitivity of the camera sensor. Mine, in particular, is a D200. You didn't mention which camera you have.
     
  6. looks like chromatic fringing. Both Lightroom and Adobe Camera Raw 4.x have tools to take care of this but you have to shoot raw.
     
  7. whoa, look at that bokeh! that's why it costs $1k.
     
  8. Yes, it looks like chromatic fringing. But notice that it surrounds the character 'a' as well as filling the interior of the same character.

    Chromatic fringing would be to one side or the other of an edge but not both.
     
  9. "whoa, look at that bokeh! that's why it costs $1k."

    Exactly why you need several lenses - keep the f1.4 and ADD the f1.8 ^^. Another possibility would be to get the 105 f2.0 DC. You get fewer problems but get the nice bokeh.
     
  10. double the motion for the 105mm 2D DC lens..

    WHAT A AWESOME LENS, I had it and now have the 85mm 1.4D but IMO the 105 2D DC is unbeatable, even w/o touching the DC.
     
  11. 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
     
  12. Yep scale window is slightly loose.
     
  13. 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 ?
     
  14. 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.
    New lens from a reputable New York store. Better than average symmetry on the aperture blades when stopped all the way down.
    The 85mm f1.4 review at photozone.de has two sample photos that show similar fringing. See the statue photos.
    I used it for some portraits earlier tonight but just got back and haven't looked in detail at the results yet.
    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.
     
  15. bmm

    bmm

    Juanjo - interest in your comparison between the 105mm and its 135mm sister. Are you an equal fan of both lenses?
     

Share This Page