<p class="MsoNormal"]Ok… three issues, only two of which I really need feedback
on.<o></o>
<p class="MsoNormal"]<o></o>Firstly, I have a 24-105mm L IS f/4.0 and I’m wondering if
the sharpness is not what it should be. I can post an example picture, but
simply put my Canon 10-22mm EF-S is far sharper and even my Tamron 17-50mm 2.8 seems to be sharper.
Surely an “L” quality lens should outperform both if not the Tamron. Has
anyone themselves or heard about many sharpness issues with this
lens?<o></o>
<p class="MsoNormal"]Next, I’m considering sending in my 50D and a selection of my
lenses to be calibrated by the factory. Does this seem to have a significant
impact in anyone’s experience? In so doing I wondering if it would correct any possible
sharpness issues I am having with the above mentioned lens (24-105 L)?. Can
anyone tell me what they would commonly charge for this services? Lastly, does
anyone know if they will perform this service in the factory for a non-canon
lens (such as the 17-50mm Tamron)?<o></o>
<p class="MsoNormal"]So, the final issue… I am sending the 10-22mm EF-S lens into
repair because unfortunately, to make a long story short, I effectively chucked
it over my shoulder onto the pavement. Probably a five foot high and five foot back
launch. <span style="font-family: Wingdings;"]L Landed on the front edge,
but had both the front and back caps on. The front glass was not damaged, but
overall… not good. The inner plastic ring around the front glass broke off, the
lens will not zoom or focus, and the inner lens assembly jiggles a little.
Which means this lens is going in for repair no matter what. I’m sure it won’t
be covered by warranty. Makes me think even more about getting insurance for my
camera gear. Too bad I didn’t have this lens for the last third of my trip too,
I’ve been really happy with this lens… very sharp, fun to use, produces some
great shots.