Gus Stangeland
Senior Member
Yes, that's good advice - but... My brother is in Arizona, my cousin is in North Dakota and I'm in Texas, so until we all get together again, I can't do it. Also, it would be very time consuming to do this and to be sure and record all the events carefully and note ALL the settings for each shot.
With regard to the "bad" copies that I sold, for both of these, I sent them to Canon and asked them to check the lenses out and make sure they meet factory specifications. I then put them up for sale right after getting them back from Canon. I included a copy of Canon's worksheet for the test/calibration/repair and noted that if there was anything wrong with the lens that Canon warranties all their repair for 90 days. Further, one of the lenses was still in warranty. So I felt like I did the best I could to make sure the lenses I was selling were good and certified good by Canon. Keep in mind, that I still cannot say for absolute sure that the problem is not me, or my camera, or that I have unrealistic expectations. I never heard back from either of the buyers so I assume they found the lenses to be perfectly good for their application.
With regard to the "bad" copies that I sold, for both of these, I sent them to Canon and asked them to check the lenses out and make sure they meet factory specifications. I then put them up for sale right after getting them back from Canon. I included a copy of Canon's worksheet for the test/calibration/repair and noted that if there was anything wrong with the lens that Canon warranties all their repair for 90 days. Further, one of the lenses was still in warranty. So I felt like I did the best I could to make sure the lenses I was selling were good and certified good by Canon. Keep in mind, that I still cannot say for absolute sure that the problem is not me, or my camera, or that I have unrealistic expectations. I never heard back from either of the buyers so I assume they found the lenses to be perfectly good for their application.
I personally think that you should take side by side comparisons of
their lenses on your camera, your lenses on their cameras, etc...
Make a CD/DVD of the results including documentation that explains
each and every one of the photos... If you can show definitively
that your relatives lenses work on your camera as well as their
cameras, and your lens won't work acceptably on ANY of the cameras...
Then send the freaking thing to Canon and DEMAND with letters to the
Chuck Westerfield or some other high level person at Canon and insist
that they fix the darn thing.
In my opinion... if you can document that other 100-400mm lenses are
significantly better, then Canon can and/or should fix or replace the
one you have with one that works...
Where the heck did you sell the other bad copies of that lens anyway?
and what exactly did you tell the buyers when they asked about how it
performed etc... ?
If I were in your shoes and could prove what your saying... I would
NEVER let Canon off the hook... I'd hound them day and night till
they did something about the problem.
You might be interested to know that I recently sent my new 100-400
lens back to Canon in Irvine for calibration/repair/adjustment. It
was in warranty (and still is) so it didn't cost me anything. They
supposedly did something to it, butdidn't explain it to me. But
anyway, when I got it back, it was just as bad as before.
Also, I sent 2 of the 3 of my previous 100-400 to Canon for repair,
along with my XT camera. But they all came back with the same
problem. I have NO clue as to what standards they test a lens for,
but apparently image quality is not one of them!