I have just been testing my Canon 70 - 300 is lens, that was sent to be repaired under the canon "special warranty", ( I think they mean re-call
), and returned yesterday, it is now as sharp in portrait orientation as in landscape orientation
.
Anyone with this lens, within the serial No. recall range, contact canon and send it to be repaired asap.
This was a bit of a test as far as I as was concerned, as this is the second major issue with my canon gear, ( the other being the mirror problem on the 300d), if I was not happy with the repair or the service, I was ready to ebay my canon equipment and change brands, but it looks like I will be staying with canon.
sgotwr