That is why he showed me the most important thing, how not to use it. He
backed off, short burst with an upright can and then pointing away from the
camera showed what comes out when you use a longer burst or have it
sideways. It was a lot more air than I could get out of the bulb air blower,
but wasn't nearly as much as I'd use to get the dust out of my computer.
As it was, he has lots of experience, I was practicing my 'watching'
technique.
I learned never ever to get that lens cleaning cloth in there, that only
made everything worse.
-----Original Message-----
From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On Behalf
Of Chuck Norcutt
Sent: Friday, February 23, 2007 10:33 AM
To: olympus@xxxxxxxxxx
Subject: [OM] Re: cleaning sensors
Canned air never gets sprayed into my cameras anywhere, no how. The
problem is that canned "air" isn't air and, if you're not careful, you
can end up spraying contaminants into your mirror box, screen and prism
as well as blowing dust and debris up into the area above the prism and
between the prism and eyepiece due to the high pressure. Then, as they
say, "Some DISassembly required".
Chuck Norcutt
Scott Peden wrote:
> Someone posted a diagram of a OM SLR, that was a great help in
understanding
> this and what was necessary to clean and what I could ignore.
>
> I was at my local camera shop late yesterday (running form the
thunderstorms
> in the mountains going down 15 miles away where it hardy rains), cobbling
> together some old stuff to make a flash deflector for my super macro shots
> and mentioned this and Dave showed me how to and how NOT to use the canned
> air, and cleaned 99% of everything off in a moment.
>
> Patience was likely the hardest lesson I have ever had to learn (and re
> learn, and re learn) but it really paid off in this subject line.
>
> Dave had some killer Super Macro's blown up to 11 x 17's, nice to have a
> sociable hands on fella who appreciates my crazy antics in person. I'm
told
> I do better than most on cleaning out their odds and ends junk drawers and
> coming back and showing them what I made work.
>
> http://www.daveclarkimages.net/
>
>
> -----Original Message-----
> From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On Behalf
> Of John Hermanson
> Sent: Friday, February 23, 2007 6:31 AM
> To: olympus@xxxxxxxxxx
> Subject: [OM] Re: cleaning sensors
>
>
> One is a mirror, the one at the top is the focus screen. The image is
> reflected by the mirror onto the surface of the screen. That is what
> you see when you look through the eyepiece. The sensor in a digital
> camera is placed where the film would otherwise be.
>
> B is a shutter speed, found in the manual mode of the camera. It stands
> for "Bulb". Shutter stays open as long as the release is held down.
> This was used by photographers many (MANY) years ago for either allowing
> the long exposure needed by low speed film or glass plates or
> synchronizing the exposing of the film (glass plates) to flash powder or
> whatever was used in those times.
>
> ___________________________________
> John Hermanson
> Camtech Photo Services, Inc.
> 21 South Lane, Huntington NY 11743
> 631-424-2121 | Olympus OM Service since 1977
> http://www.zuiko.com | omtech1 AT verizon dot net
>
>
> Scott Peden wrote:
>> Wow, I didn't even recognize the parts you were talking about. Obviously
I
>> don't know the parts names.
>>
>> I have an E-500 and I keep hearing about bulbs, but I think all I have is
> an
>> electronic timer and a remote.
>>
>> When you take the lens off, there is a small mirror, when I looked up
from
>> there, there is another reflective surface and that is what has all the
>> hairs and lint on it, and how it got there beats me.
>>
>> The vibration thingy apparently isn't powerful enough to clean the crap
> off
>> of it.
>>
>>
>> -----Original Message-----
>> From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On
Behalf
>> Of Winsor Crosby
>> Sent: Thursday, February 22, 2007 11:38 AM
>> To: olympus@xxxxxxxxxx
>> Subject: [OM] Re: cleaning sensors
>>
>>
>> I don't know of a camera where you can see two mirrors from the lens
>> opening.
>>
>> The sensor is behind the mirror and behind the shutter curtain in a
>> DSLR. Generally you access it from the bulb setting for the shutter
>> with a fully charged battery and a locking shutter cable, or from a
>> special cleaning setting on the menu with a plug in power supply.
>> Each option flips the mirror out of the way and opens the shutter so
>> you can get to the sensor.
>>
>>
>>
>> Winsor
>> Long Beach, California, USA
>>
>>
>>
>>
>
>
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