Archived posting to the Leica Users Group, 1999/09/27
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]"Robert G. Stevens" wrote: > > Mark: > > Slides need a scanner with a high Dmax. The higher the number, the better > it is at getting the shadow detail of the slide. The best scanners > currently for this is the Polaroid 4000 and the Nikon LS2000 with Dmaxes of > 3.4 or so. The polaroid is the faster of the two scanners if you are in a > hurry. > > The problem with slides being scanned is the shodow detail is dark and the > light reaching the sensor from this region can be very dim. This means you > have to have a very sensitive device and the rest of the scanners > electronics have to be able to deal with the weak signal without it getting > lost in the noise of the electronic system. Sort of like Signal to Noise > ratio in audio equipment. > ><Snip> Thanks there is such a thing as multi scanning. I take this to mean you could perhaps do one scan for those bulletproof shadows and then combine them with the overall scan thereby (with the added difficulty) coming up with a quality scan from a difficult slide? I will check out your URL thought to see if they perhaps deal with these issues. Mark Rabiner