As a general rule I power off before changing lenses because I assume
that a charged sensor will attract dust. But I surely have changed
lenses with the power on more than a few times and have never noticed
any issues. I may not be the best observers of this kind of thing, though.
On 4/24/2014 3:22 PM, Bruce Walker wrote:
On Thu, Apr 24, 2014 at 2:05 PM, P.J. Alling <[email protected]> wrote:
Shoot with a manual focus lens, the four way controller
defaults to its quick menu functions, don't turn the camera off, just change
lenses to an auto focus lens. The four way controller returns to it's
previous setting of controlling the autofocus points. Turn the camera off
before changing the lens then turn it back on and it doesn't, What? Maybe
it's just my camera.
That's not something I'd ever notice because I _always_ power off my
camera to change lenses. Without fail. Not a good idea at all to do
that under power.
I expect that wiping live contacts across the lens contacts as the
lens cylinder rotates into lock will cause untold glitches and
ambiguous signals at the very least; possibly dangerous to either the
body or lens electronics.
I know that changing the flash while powered is bad because I blew up
an AF540FGZ that way. $180 to fix that gaff.
And pulling or inserting CF cards under power is likely to damage data.
Anyone else change lenses without powering down the camera?
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