Archived posting to the Leica Users Group, 2000/06/08
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]2000-06-07-17:10:27 HotRodVon@aol.com: > I love my M6...Until recently! I bought a new 90 2.8 Elmarit...and no > matter what, I can't seem to get any sharp results. This is really > a pisser...being that my 50 mm and my 24mm are as sharp as can be, I > always get outstanding results from those lenes. Observation 1: that lens model (the latest 90/2.8, right?) is a very very good lens, at least my sample is. So if yours isn't performing up to snuff, something's wrong. The question is what. Some possibilities: - Maybe your sample of the lens is bad, or out of whack in some way. For example, I suddenly started failing to keep my pics with a 50mm Summilux properly focussed. Thought I was going crazy, or that my rangefinder had gone out. Turned out that the retaining ring holding the elements in place had gotten loose, and everything was flopping a little bit out of position. - Maybe your rangefinder is a little off. I was getting acceptable pictures with one body using every lens but my new 135/3.4. Turns out that the rangefinder was maladjusted but I was still close enough to being within DOF slop with the shorter lenses that I hadn't been forced to notice. There was no missing it with the 135, which was of course longer than all the others. This may be the case with you and your 90. I understand that there are two adjustments (infinity and something else) which need to be correct for the rangefinder to operate properly for the full distance range. In my case, once I paid proper attention, it became clear that when I poined the camera with 135mm lens at something very far away and tried to focus on it, the lens hit its infinity stop before the images of the faraway object converged completely. Then it's unmistakable that the RF needs twiddling. Try this. - Maybe there's some other rangefinder/lens incompatibility. Try going to your friendly Leica store. Focus on an object with your lens on your camera, note the position of the distance scale, then try precisely the same -- with your lens on a different M6, and with a different 90/2.8 on your M6. That is, if you bought the lens from your friendly Leica store.