> Hi Jorge,
> How do you use your sky image to clean up other pictures? Is it by
> recording an action of the spotting process, which can then be used as
> a basic template for other images?
Yes, you can do so. If you are in the middle of a shooting and find out you
can't stop to clean the thing, then you better make this back up shot. If
you have the sample of clean blue tropical sky I will be sending Paul, or
just another clean ,evenly colored area you can shoot, you can then assume
the pattern of dust remains the same throughout the entire shooting. THen
you go home with your files and add the sky shot as a second layer and use
blending modes to eliminate the uniformly colored background, and all will
be left in the layer is the "template" of dust spots to be used for further
retouching.
> And, which car vac? I was tempted to grab the household cleaner as that
> would do a really splendid job, but then visions of the chip ending up
> in the dust bag put me off! ("Excitement is always better tempered with
> second thoughts." Thanks Francis.)
That is exactly why I said battery-operated Vacuum thing.
If you use an industrial sized machine and If the chip is sucked from your
camera, Canon/Nikon will not accept any liability nor will I !!
Others have reported good results with Hair Blowers too. Perhaps a mix of
both blowing and vacuuming will do wonders to hard-to-remove dust spots.
I was a chemist in my former, pre-photography life and I keep very litle
respect to Canned Air, Canned CO2 or liquid chemicals for cleaning such
sensitive surfaces,regardless of their claim for chemical inertia.
Remember that the dust is not falling on the chip, but on the IR/Low Pass
Filter in front of the chip. A scratch or a clouding of any size in the
filter screen means sending your camera to repair at full price, with all
warranties void.
Regards.
Jorge Parra
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