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  • See http://www.photomacrography.net/forum/viewtopic.php?t=9542 for discussion of several options for stack-and-stitch. Let me know if anything is unclear, missing, or incorrect. Sorry I have arrived late to this thread. I do not read this group much anymore, and I did not know about this discussion until Erik Krause alerted me. The situation with Erik's macro lens is a bit unusual...
    rjlittlefield May 4, 2010
  • --- In PanoToolsNG@^$1, "Erik Krause" wrote: > > On Monday, April 07, 2008 at 9:24, paul womack wrote: > > > BTW, as a "thankyou" to the enfuse developers, > > here's a photo I made using enfuse, that I think > > would have been very difficult otherwise: > > > > [long url deleted] > > Nice example! However, in a standard studio environment > you would have used crossed polarizers...
    Rik Littlefield Apr 8, 2008
  • --- In PanoToolsNG@^$1, "johncharlesriley" wrote: > > > > > Using black velvet this way is a very clever trick. > > What happens, I believe, is that the "gray" appearance > > is caused by a myriad of specular reflections > > from the surfaces of the fibers. Specular > > reflections are always non-colored, so indeed > > this method should produce a very neutral gray > > as long as...
    Rik Littlefield Mar 8, 2008
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  • --- In PanoToolsNG@^$1, "William Donelson" wrote: > > --- In PanoToolsNG@^$2, Snowy Aldon wrote: > > It seems strange that the velvet gives a neutral value when > > illuminated to be in the mid-tone. I would have have supposed > > that the colour bias of the dyes would become apparent > > and introduce a cast. > > You have to be careful which patch of velvet you use. > Some are not...
    Rik Littlefield Mar 4, 2008
  • --- In PanoToolsNG@^$1, Pablo dAngelo wrote: > The new contrast criteria can also be used > for extended DOF fusion of focus stacks. > For focus stacks, the performance is similar to > dedicated programs such as CombineZ or Helicon Focus. > > Example command line for focus stack fusion > (all in one line): > enfuse -o result.tif --wExposure=0.001 --wSaturation=0.001 > --wContrast=1...
    Rik Littlefield Dec 21, 2007
  • --- In PanoToolsNG@^$1, "Serge Maandag (yahoo)" wrote: > > > I didn't see that Littlefield post, but I have sen > > the arguments before. I've also seen calculations > > and tests that shows that the smaller aperture is not > > enough to counter-act/follow the added DoF on > > a crop camera like the 4/3, because diffraction > > starts blurring the image quite early on a FF camera...
    Rik Littlefield Aug 21, 2007
  • --- In PanoToolsNG@^$1, Aleksandr Milewski wrote: > > The recent thread about the Helicon tools reminded me > of something I'd walked away from a while ago. > I'm away from my main imaging machine for > a few days, so this is all from memory, but... > > I have a stitch that I shot handheld in the California > Railroad Museum. It was far darker in there > than I expected, so I was...
    Rik Littlefield Jul 21, 2007
  • --- In PanoToolsNG@^$1, "David Sykes" wrote: > > Carel wrote: > > > You should also look at SAR http://www.general-cathexis.com/ > > That is a new one to me. > > He describes Rik and Helicon as 'competitors' and says :- > > "I think you will find that SAR's Extended DOF outperforms the > competition with respect to both quality and speed." I find it amusing to be listed as a...
    Rik Littlefield Jul 21, 2007
  • --- In PanoToolsNG@^$1, "erik leeman" wrote: > > Oops, looks like I called you Rick instead of Rik! > Sorry 'bout that. Not a concern, but thanks for noticing. ;-) > For now I just want to know if Helicon Focus > can handle very large 16 bit images and > what quality can be expected > for that rather steep pricetag. Good question, not so easy to answer. All of my prior experience...
    Rik Littlefield Jul 21, 2007
  • --- In PanoToolsNG@^$1, "erik leeman" wrote: > > Maybe I should explain why I am interested in Helicon Focus. > I use PTGui (panotools) not only for 360x180 panoramas > but also for macro stitches. The problem with macro > always is the very limited depth of field, so sometimes > I make a set of stitches of the same subject > with a slightly different focusdistance for each stitch...
    Rik Littlefield Jul 21, 2007