This is in reference to my EF 28-70 2.8 L lens, purchased in 2001
Over the last couple of years this lens has started to produce hazy pictures with very low contrast. After doing any and all cleaning that I could do myself I decided that the lens needed to be repaired by Canon. The quality of the pictures is too bad to continue using the lens as it is. I suspect that one of the interior elements somehow developed a hazy film on it which needs to be cleaned off.
Unfortunately the lens was returned by Canon service, untouched with an explanation that I had exceeded the service life of this model. It also cited that components are no longer available for this model lens.
I am at a loss for what to do short of opening the lens myself and trying to find the problem – which would probably end up destroying it.
Can any of you while suggest to me any solutions to this problem that you might be aware of. Maybe somebody knows of a facility that will repair Canon lenses? Maybe it is possible to repair it myself with a little bit of instruction or a YouTube video for instruction.
To replace this lens with an identical used one from a major auction website would cost me about $800. The replacement for this model is over $1500. Ouch.
Just FYI, here is a link to a full sized sample image: http://sessums.net/sample/sample.JPG