Re: Sensor dust Nikon D80

In article <1199958191.125709@athprx04>,
"gpaleo" <gpaleo@xxxxxxxxxxxxxxx> wrote:

"Floyd L. Davidson" <floyd@xxxxxxxxxx> wrote
news:8763y29tbn.fld@xxxxxxxxxxxxx

(snip)

That is the primary reason cameras have a "mirror
lockup" menu option to allow sensor cleaning (while the
sensor is *not* energized) as opposed to just using the
"bulb" shutter speed setting to gain acesss (which
works, except the sensor is energized and makes it is
virtually impossible to remove all dust from the
sensor).

--
Floyd L. Davidson <http://www.apaflo.com/floyd_davidson>
Ukpeagvik (Barrow, Alaska) floyd@xxxxxxxxxx



AHA!!!!!!!!!
Serendipity strikes again! There goes another question i had for some time
now!
Thanks.

This thread (esp. the comment about Wikipedia) illustrate the
distinction between information and facts. With a little digging, maybe
we will have some facts about static on the sensor (or the filter, or
whatever is attracting dust.

In the meantime, I'm operating on the basis of the manual section
entitled "Caring for the Camera." On page 124, it states that the
anti-aliasing filter is prone to attracting dust/lint; that you should
use a blower; that you should not touch it with anything, even brush
bristles. There is complete information on the correct procedure for
inspecting & cleaning this area, but no mention of static attraction. I
apologize for mentioning static in the first place, since I don't recall
where I read about it. I can only say there were multiple sources.

The specifics on how much air pressure can be used is indicated by the
illustration of a bulb-type blower (in their text they merely say
"blower"). I have always used canned air like Dust-Off on 35mm cameras
but will not direct such a strong blast towards this delicate filter.

I am observing the precaution of aiming the camera down while changing
lenses. That's something I've been doing for years; anytime the mirror
box is open to the air I keep the front of the camera pointing down.

For me, it doesn't matter what the magnitude or cause of the static
attraction may be. Even if it is only Murphy's Law, I intuitively accept
that dust anywhere in the mirror box is undesirable, worth avoiding, end
of story.

In Navy technical school, certain subassemblies were not recommended for
servicing by those of us in the squadrons. Rather than say "reserve
further disassembly for depot maintenance" we had one instructor who
would describe one of these items as "works fine, lasts a long time,
very few moving parts, don't f*ck with it."
--
"It is the individual alone who is timeless. The individual's
hungers, anxieties, dreams, and preoccupations have remained
unchanged throughout the millennia." Eric Hoffer (1902-1983)
.

Relevant Pages

  • Re: Canon 350D for photomicrography?
    ... Canon supplies "remote capture" software with the camera which is ... The mirror lock function is vital, ... the mirror swinging up and the shutter being released. ... The size of the sensor, at 15.1mm x 22.7mm falls somewhere between ...
    (sci.techniques.microscopy)
  • Re: Hacking the Rebel 300 firmware
    ... It wasn't "sabotaged" Canon simply took the 10D sensor and circuit ... The 10D is still a better camera overall, ... shorter mount to mirror distance. ... otherwise EF lenses would not focus on EF-S ...
    (rec.photo.digital.slr-systems)
  • Re: Hacking the Rebel 300 firmware
    ... It wasn't "sabotaged" Canon simply took the 10D sensor and circuit ... The 10D is still a better camera overall, ... shorter mount to mirror distance. ... otherwise EF lenses would not focus on EF-S ...
    (rec.photo.digital.slr-systems)
  • Re: I touched the sensor like a dummy
    ... cloth that I purchased for to clean the camera with. ... I did bring the camera to the camera the camera store and the salesman ... dust on the sensor or mirror. ... then you touched the sensor itself. ...
    (rec.photo.digital)
  • Re: 10MP compacts. I am not impressed
    ... sensor isn't a myth. ... course it will--but the measured difference in S/N between my camera ... 1200 electrons/sq micron, about average. ...
    (rec.photo.digital)
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