Archived posting to the Leica Users Group, 2001/08/10
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]> Hi Jim, > > Thanks for responding. > >> Which lines are not straight? Lines IN the print (telephone poles, building >> sides, windows, etc.) or the edge of the print where there is a white >> border crreated by the easel blades or easel border that holds the paper >> down during exposure? > > The borders come to a strange little point at the corners and are slightly > bowed in toward the middle. > >> What kind of easel are you using? > > Saunders 11 X 14 > >> I cannot believe it would be IN the print as that would not have changed >> and would actually be flatter/straighter in the glass carrier. > > True! > >> If it is the edge of your print, your glassLESS neg carrier is not full >> frame and you are probably using the easel to create a border on your >> prints. Easels make straight lines. If you are printing inside the easel >> with the glassLESS carrier, the carrier edges are machined straight and you >> will get straight border lines. > > > That's right. > >> With your new glassless carrier, you are probably printing the entire >> negative including the space around the film, giving you a black line >> around your print followed by the white border from the easel. Is this >> correct? If so, it is your negative edges that are causing the non straight >> lines since you are printing the edges as well as the image itself. > > The new carrier is ff with double glass. I'm printing inside the easel. I > checked the > neg frame lines and they are perfectly square. > >> Bottom line, going from a glassless to a glass carrier will have no effect >> on the image lines except that the glass carrier will give a flatter >> straighter representation of the image (but watch out for newton rings and >> dust.) The edge of your print is controlled by the edge of the neg carrier >> and the easel blades or edges (depending upon easel type.) And should be >> straight. > > I agree. But that's not what happens. There is a distortion at the > corners--enough so that > if I wanted to mat a print with the border inside the mat, the distortion would be > quite obvious. > >> So look at the edges of your negative which you are now printing but were >> not printing before. And how they lines up with the blades of your easel. > > Actually, I printed the neg with both carriers, all other conditions and > settings being the same. > The glassLESS one, out-performed the double glass. My glassLESS, by the > way, is on that originally had glass on one side, which broke. I've taped > half of a slide mount to hold the neg. It works very well, tho not > perfect. I don't get the exaggerated curves I'm getting with the new one. > The funny thing, tho, is that the double glass > is not CONSISTENTLY bad. Sometimes there's more distortion than others. > >> I hope I read your question correctly... :) > > You did! I'm wondering if there's some kind of optical problem here--the > combination of the 45mm Focotar > with the glass they are using in the film holder. Rings are not a problem. > Dust--that's another story. > > > MJK > > > At 07:09 PM 8/10/01 -0400, Mary and Stan Kephart wrote: >>Knowledgeable Ones, >> >>I purchased a ff (25X37mm) film holder from Leica NJ, with double glass. >>It's BEAUTIFUL! However, the lines on my prints are not straight. They >>seem to curve. This doesn't happen with my (defective) glassless one! >> >>Any insights? >> >>Leica has generously allowed my to sample three or four of these and they >>all do the same thing to a greater or less degree. >> >>Thanks in advance. >> >>MJK >