Archived posting to the Leica Users Group, 2010/06/30
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I appreciate the food for thought, guys. I haven't phoned Leica, but I e-mailed them saying the 90 T-E is worse than before, and I attached test photos at f/2.8 (wide open). The focus fault has nothing to do with VF magnification, because I lay the tape at an angle so the RF patch shows a double image of the tape as an 'X' and I just get the lines of the 'X' to intersect at the 1, 2, or 3m spot. Also, I am 37 years old and have 20/20 vision, always surprising the optometrist at my annual health check-up. Beside, the returned 90mm lens is not out by millimeters, but is way out by about a quarter of a meter at 2m, and 40cm at 3m. Totally unacceptable. I appreciate and understand Peter's response, but I can see that this problem is not focus shift but front-focusing. This is because the error remains about the same, percentage-wise, at the 3 distances, and it is as present at f/5.6 as it is at f/2.8. Peter's response (much appreciated, thanks) made me think that the Leica techs might have chosen to optimize the lens for narrower apertures. This makes sense as the 90 Tele-Elmar's strength is its light weight and small size, making it a great outdoor 90. I just tested it at f/5.6 and compared it with the previous wide open test. Same result: unusable front- focus. Tried it again at f/11: same. Didn't test it at f/16 for obvious reasons. They decided to charge me for work I was assured would be a free service. I double-checked the invoice, as Geoff suggested, but no extra work apart from the adjustment was made. I doubt the lens was disassembled, because the front element of my 90 T- E was a little dirty around the rim on the inside when I sent it, and it was the same when returned. That in itself is disappointing for a 420 Euro "service". Even my bike repair man cleans my wheel when he replaces an inner tube. Anyway, that is not what I am complaining about. Honestly, I doubt they even serviced the 90. Perhaps it just got worse during transit. Or Solms are running out of elves and make the numbers up gremlins. Nathan and others suggested that I ask my credit card company to stop the payment. I didn't think of that until suggested. However, the lens "adjustment" "work" was paid for together with the sensor replacement on the M8. I am satisfied with the M8 repair job they did. Wouldn't it be unfair of me to stop the full payment? I don't think that Visa would be able to make a partial payment stop. The camera itself has a fresh one-year guarantee, but I don't think that applies to the lenses. However, I still have enough faith in Leica's good will to expect that they will give this lens special attention when I return it again. I am also looking forward to reading what the Leica tech has to say about the test photos I made with the so-called adjusted 90 Tele-Elmar. By the way, I live in Japan, and I have always received tip-top service from Canon when I had to have lenses/cameras repaired or serviced here. Canon even overlooked the 3 months by which my warranty was out of date on my 20D a few years ago, and replaced the exhausted shutter free of charge. Then again, Canon products are cheaper in the US than they are in Japan, so the service cuts over there make sense. Canon certainly never grubbed around for extra money from me by disappointingly telling me I now have to pay for what they had previously assured me would be a free service. Here are the new test photos I made at f/5.6 just to see if it was a focus shift problem rather than front-focusing. It is front-focusing, and therefore reparable. I paid Leica good Euros to make my lens this inaccurate. Granted the lens is an old model, maybe made in Canada in the 70s. But my old 90 Cron works better on my M8 than this just-back- from-Solms Tele-Elmar, and my old goggled 135/2.8 is absolutely spot- on with my M8. If the 3D film thickness versus virtually 2D sensor plane effect isn't necessary with my old 90 Cron and 135/2.8, then I don't accept it as a reasonable excuse for my "adjusted" T-E to be out by so much as to make it worse than before. It wasn't even so bad before, I just figured, hey, let's get it perfect so I'll be a happy customer. http://www.flickr.com/search/?q=90%20Tele-Elmar%20f%2F5.6&w=73557746%40N00 Cheers, Peter Cheyne