Hi Norman, Norman Chappell wrote:
> > Regarding the graininess of slide film, I was told some time ago by a guy > who manufacturers processing equipment that silde film is an order of > magnitude finer in grain than negative film and the 18 x 12 enlargements > I've done would seem to bear this out but then its a difficult thing to > measure. I don't use negative film much. Could be correct compared to the best slide films (and it depends on processing, of course), but Astia (or Sensia) isn't very fine grained compared to Velvia or Provia 100F (I believe RMS 11, possibly 10, vs. 9 vs 8, respectively--and if I remember correctly, each number represents a doubling or halving of the perceived size of the grain--anyone know for sure about that?). I can't find the fuji spec book, but they rate neg film and slide film differently when it comes to grain anyway, so it wouldn't be much help. Regardless, Astia or a Kodak film (granier yet, most likely) is probably your only option for portraits, since, Provia and especially Velvia will make your subjects look wierd. You might be able to get by with Provia depending on your taste for saturation. Regardless, grain isn't so bad so long as it is nice and even, and IIRC Sensia isn't all that clumpy despite it's relatively large grain, which makes a big difference. However, this is based on my recollections from spring. Since I switched to a D30 for my personal shooting, I have only been using tungsten slide film or neg film for jobs. > > Re' your comment on the black net that "it will only reduce the resolution > of fine detail as long as no light falls on the net". I don't understand > the logic behind this. If its black, how would the light inhibit it's > ability to reduce detail? I can understand a white net reflecting light and > causing flare but what am I missing here? Is this possibly why I didn't see > any effect when I used it? No, I typed that in a confusing way, sorry...what I meant was that if the black net is at all shiney, as most of that nylon type netting is, at least to some extent, and if light falls on it, it will reduce contrast to some extent in addition to reducing fine detail because it will reflect that light into the lens as flare. Basically I was just saying use a lens hood if you want the photo to look the same (in terms of gross contrast) as it does without netting aside from the reduction in fine detail. Nope, light falling on it won't cause it to let the detail through! Sorry for the confusion. Mike Michael Shupe M.J.Shupe Photography Michigan Tech University www.northernlightsgallery.com * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
