Tag Archives: Canon USA

I just found out my most recent lense purchase, Canon 70-300mm IS, might have a fault. Although I am obviously disappointed there might be something wrong  at manufacture with such an expensive piece of kit it is pretty good to know that I found out from Canon rather than discover it for myself.

Apparently when used in portrait orientation at the longest length you get some softness at the edges. Not earth shatteringly awful, not ideal either. I applaud Canon for being honest about this, heck from what I have seen in forums outside of L/primes most 300mm lenses have a problem of softness at the edges anyway!

Canon USA Consumer Products – Support – EF 70-300mm f/4-5.6 IS USM – Service Notices

To Customers Who Use the EF 70-300 f/4-5.6 IS USM Telephoto Zoom Lens:

Thank you very much for your patronage of our products.

We have recently become aware of a phenomenon in which some images captured by the EF 70-300 f/4-5.6 IS USM lens appear in insufficient resolution. This phenomenon may be seen at the edge of the frame at the 300mm setting when the camera is held vertically. We have been studying the symptoms of this phenomenon in order to determine its precise cause and to develop an appropriate remedy. We will 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.

We are very sorry for the inconvenience this phenomenon represents for customers who use this lens and appreciate your patience as we work to resolve it.

Contact Information for inquiries

Call Center
1-800-828-4040 (toll free)
8AM to Midnight – Monday to Friday
10AM to 8PM – Saturdays
Email: carecenter@cits.canon.com

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