wayne_larmon Posted May 25, 2006 Share Posted May 25, 2006 <p>Service Notice: EF 70-300 f/4-5.6 IS USM Lens May Result in InsufficientResolution <p>To Customers Who Use the EF 70-300 f/4-5.6 IS USM Telephoto Zoom Lens: <p>Thank you very much for your patronage of our products. <p>We have recently become aware of a phenomenon in which some images capturedby the EF 70-300 f/4-5.6 IS USM lens appear in insufficient resolution. Thisphenomenon may be seen at the edge of the frame at the 300mm setting when thecamera is held vertically. We have been studying the symptoms of this phenomenonin order to determine its precise cause and to develop an appropriate remedy. Wewill inform you on this Web site as soon as this remedy has been decided, which,at this point should be by the end of June 2006. <p>We are very sorry for the inconvenience this phenomenon represents forcustomers who use this lens and appreciate your patience as we work to resolve it. <pr>Contact Information for inquiries <p>Call Center<br>1-800-828-4040 (toll free)<br>8AM to Midnight - Monday to Friday<br>10AM to 8PM - Saturdays<br>Email: carecenter@cits.canon.com<br> <p><ahref="http://www.usa.canon.com/consumer/controller?act=PgComSmModDisplayAct&keycode=2112&fcategoryid=216&modelid=11922">http://www.usa.canon.com/consumer/controller?act=PgComSmModDisplayAct&keycode=2112&fcategoryid=216&modelid=11922</a> Link to comment Share on other sites More sharing options...
mark u Posted May 25, 2006 Share Posted May 25, 2006 Already noted in this thread: http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=00Gg47&tag= Incidentally, Canon Europe and Canon Japan have similar notices posted. Link to comment Share on other sites More sharing options...
brian_potts Posted May 25, 2006 Share Posted May 25, 2006 It is good that Canon acknowledges and fixes their lenses when they have problems, and above all else this is important. I have seen a number of tests that show that this is real at least for some of the 70-300s. There are obviously other tests which show that it is fine which probably says something about sample-to-sample variation. Canon does appear to be having more of these problems in recent years though...maybe I am just keeping up to much? Regardless, it seems that it would be best to test them a bit more before releasing them. In the past year, they have recalled the 24-105 for flare, and soon they will be doing the 70-300. A few years ago, people had the red ring from their 24-70 popping off...luckily, I bought mine late. There appear to be quite a few people saying that the later versions of the 400 DO are sharper than the original version...who knows if this one is real though...I wouldn't be surprised if they tweaked the production. I was formerly a fairly early adopter of a number of things. At this point, it seems that it is best to let the product settle down for a year or so before buying. I guess you could make this argument for anything. Canon does seem to be having more of these problems than some of the competition at the moment though. They should think about this since it can tarnish their reputation. I would imagine that this will be a very large recall. Unlike the 24-105, the 70-300 is sold to many consumers, so I would imagine the number of affected lenses is much greater. Link to comment Share on other sites More sharing options...
savas_kyprianides Posted May 25, 2006 Share Posted May 25, 2006 The one thing that would make me blow a gasket is to have the red ring come off of my L lenses. Link to comment Share on other sites More sharing options...
awindsor Posted May 26, 2006 Share Posted May 26, 2006 A reporter termed the first man in New Zealand to purchase Windows 2000 "the lead lemming". I am no longer an early adopter. I have been a beta tester for various products but I refuse to pay to be a beta tester which seems to be the case with a number of recent products. I think Adobe deserves kudos for the way they are dealing with LightRoom and Apple deserves a brickbat for the way they dealt with Aperture. Link to comment Share on other sites More sharing options...
nels Posted May 26, 2006 Share Posted May 26, 2006 We're all beta testers of our own lives. There are no production runs here. Link to comment Share on other sites More sharing options...
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