Should i exchange my canon 17-55 2.8 for another one? Would you?

Started 6 months ago | Discussions thread
Hank3152
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Re: Should i exchange my canon 17-55 2.8 for another one? Would you?
In reply to Mark B., 6 months ago

Mark B. wrote:

...and I bet Glenn didn't use a flashlight to examine it. I've never done this with any of my lenses, and you're the first person I've ever heard of doing this. Any lens that has an extending barrel has the possibility to pull dust into the mechanism each time it's used.

I bet if the OP used a flashlight on the 100-400 it would show dust as well since it has a reputation for being a dust pump but at those focal lengths nobody cares nor discusses it that much.....

I once spotted a tiny reflective particle behind the rear element of the 100f/2.8L macro which got my attention since I was selling it and listed it as a pristine 10+. The sliver of a particle only showed up at certain angles when it reflected light so I used a small Maglite to determine what it was. Only then did I observe several other pieces "floating" behind other inner elements, but to the naked eye they were invisible so I let it go. Canon described them as "shavings" during lens assembly which are not uncommon and didn't affect IQ.

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"Five out of four people have trouble with fractions."
Regards,
Hank

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