Archived posting to the Leica Users Group, 2004/11/12
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]here,s a review of another camera without the filter. haven,t read it yet.hope it is helpful http://www.luminous-landscape.com/reviews/cameras/kodak-dcs.shtml best regards simon jessurun amsterdam > Frank I know EXACTLY what you're talking about and the answer is: I > don't know and the rep wasn't a software guy. He alluded to a few > other cameras that don't have low-pass filters in the optical path, > but I forget which ones they were. > > The example image they used was of a woman in a wedding dress where > the veil, with it's myriad of tiny crossing lines, shows up with all > sorts of rainbow artifacts. With the software filter in place that > vanishes and is replaced by more of a blur. So, perhaps, they are > doing in software what the filter does in the light-path, and > smoothing pixels together in some sort of way, perhaps based > upon...???? Hell, I don't know. > > But I think you're right -- they seem to be pushing the "rightness" of > digital sampling. > > Adam > > > On Fri, 12 Nov 2004 18:24:08 +0000, Frank Dernie > <frank.dernie@btinternet.com> wrote: > > Does anybody know how this works? As far as I remember, in digital > > sampling if the low pass filter is not applied before digitising it is > > not possible to separate valid data from aliasing artefacts. > > Frank > > > > > > > > On 11 Nov, 2004, at 06:20, Feli di Giorgio wrote: > > > > >> The moire filter is in software, not hardware. The idea behind this > > >> is to > > >> maximize image quality in most situations, and use the software moire > > >> filter > > >> only when nessesary, such as with fabrics or other fine patterns like > > >> distant picket fences. Other camera makers use a hardware moire > > >> filter > > >> which softens the image. > > > > > > Thanks Doug, sounds very encouraging. > > > > > > Canon uses a fairly aggressive hardware filter and people often > > > complain > > > that it results in softer images. > > > > > > Nikon's D70 uses a similar approach as Leica, resulting in very sharp > > > images, > > > but sometimes you have to massage the files a little more in your RAW > > > software. > > > Personally I think this is the way to go. I like to start out with as > > > much information > > > as possible from the capture device and fiddle with it myself. Imacon > > > is a very > > > experienced company and I'm sure they will get this right. > > > > > > Feli > > > > > > > > > _______________________________________________________ > > > feli2@earthlink.net 2 + 2 = 4 > > > www.elanphotos.com > > > > > > _______________________________________________ > > > Leica Users Group. > > > See http://leica-users.org/mailman/listinfo/lug for more information > > > > > > > _______________________________________________ > > Leica Users Group. > > See http://leica-users.org/mailman/listinfo/lug for more information > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >