Gene: Nice to hear from you again. Are you displaying any of your work on line? Regards Charles Maclauchlan --- Gene Crumpler <[EMAIL PROTECTED]> wrote:
> The film is called a mono disperse film. The silver > size is closely > controlled during manufacturing (trade Secret). the > film is Gigabyte > made in Europe. I have used the gigagbit flim in > both 135 size and > 4x5. At the time I tried the 35mm film, Kodak was > still making > Technical Pan in both 35mm and 120 roll size. So I > didn't get too > excited at that point. > > Then Kodak stopped making Technical Pan Film. I had > been using TP in > 35mm and 120 as my standard B&W film for at least 10 > years. So I ended > up talking with the inventor in Germany trying to > get the film > imported to this Country. I will attached the data > sheet that I > translated into American English a few months ago. > > I have 4x5 film in my freezer right now. Quite > frankly the 4x5 is way > over kill for 4x5 shooting. 4x5 shooting is highly > defraction limited. > The diffraction on axis for a 1000:1 target for a > f22 stop is 61 > lp/mm. So our 4x5 lenses can not really benefit from > all this > resolution. I have taken Identical images with 4x5 > T-Max and 4x5 > gigabyte and at 20x24 size there is little to no > difference. If you > look at the prints with a 10x loupe, you can tell a > dramatic > difference in the grain structure. > > I got the 4x5 film to test the film in both 4x5 and > 120 size. I cut > down the film to fit in the film gate of my Pentax > 67 and did some Air > Force Chart tests. I was able to read 156 lp/mm at > f5.6 from my Pentax > 55mm f4.0 lens. This is the sharpest lens I own in > MF. ( I use to test > all my lenses in 35mm and MF) > > I have not done this with the 4x5 lenses I have > collected in the last > 2 years, as it is pretty pointless! > > Here are a couple of links about the film > > www.technicalpan.com > > http://www.gigabitfilm.de/download/cln.pdf > > There was also a very favorable article in a British > B&W magazine > several years ago. > > this film will really comes into it's own in 120 > roll film. I travel > overseas a lot and I do not try to carry the 4x5. So > 120 gigabit in my > Hasselblad will really produce smooth 16x20 prints > for 2x2. I travel > with a hasselblad, two lenses, two backs and two > finders, filters, > etc., and a 4 mp digital Kodak. I can handle this at > my age. > > Gene Crumpler > > > > > Website: http://groups.yahoo.com/group/HPDesignJet_Printers Post message: [email protected] Subscribe: [EMAIL PROTECTED] Unsubscribe: [EMAIL PROTECTED] List owner: [EMAIL PROTECTED] Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/HPDesignJet_Printers/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/HPDesignJet_Printers/join (Yahoo! ID required) <*> To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
