Archived posting to the Leica Users Group, 2008/08/14
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Frank I know that software correction of CA works outside the camera. I've seen it and used it, starting with panotools and later with Adobe et al. And I had a hunch from what I've seen that there may be correction built into camera firmware. Still, it seems like a work around to compensate for lenses that optically amazing because of what they do -- i.e. go wide and zoom a lot, etc. -- and how well they do what they do. However, a DXAFSVRZoomarific that requires a software crutch in order to get to where it needs to be just doesn't appeal to me quite as much these days. I just feel better using a good prime lens that has the optical basics nailed down. Things like focusing the visable spectrum onto a single plane, having even illumination, or keeping vertical and horizontal lines straight. I get fewer surprises and it's less frustrating, especially when I try and print big. My biggest gripe about software for anything is that it can change so quickly, and we don't even know it. We all used to scream at the slightest hint of a reformulation of Tri-X. Now we upgrade software once a month. We take for granted it's improved, but improved according to whom? Changes that make it easier to manage files, or that provide a more user friendly workflow is one thing. Those are obvious. But what about all the execution we don't see, in camera firmware, or in all the various applications, drivers, etc used in the imaging workflow? A programmer's improvement may be a photographer's newly manifesting artifact. OTOH, what do I know? I'm sure companies are as adept at designing software as they are at polishing lens elements. DaveR -----Original Message----- From: FRANK DERNIE [mailto:frank.dernie@btinternet.com] Sent: Wednesday, August 13, 2008 1:18 PM To: Leica Users Group Subject: RE: [Leica] Chromatic Aberrations! The D3 and D300, and, I would imagine, the D700 have automatic CA correction built in. It is used for the in camera jpgs and the RAW file has the data embedded such that the Nikon raw software corrects automatically too. Frank --- David Rodgers <drodgers@casefarms.com> wrote: > Tina, > > Nikkors aren't immune to CA (with the possible > exception perhaps of the > 17-35). I'm surprised that we don't hear more about > CA. Maybe that's > because a lot of people just don't look that closely > at their images. Or > they're only looking at 12mp file sampled down to > fit on PC screen. > > DaveR > > -----Original Message----- > From: Tina Manley [mailto:images@comporium.net] > Sent: Monday, August 11, 2008 10:32 PM > To: lug@leica-users.org > Subject: [Leica] Chromatic Aberrations! > > LUG: > > I'm working on some old files tonight - Before M8 - > and I had > forgotten what an aggravation chromatic aberrations > can be. I never > see this with the M8 or Leica lenses. I think I'll > be leaving my > Canons on the shelf from now on. It takes twice as > long to process each > photo! > > http://upload.pbase.com/image/101544948 > > Canon 1DMII, but the culprit is the 16-35 lens. I > see it with most > wide Canons though. > > Tina > > Tina Manley > www.tinamanley.com > > > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for > more information >