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[OM] Re: cleaning sensors

Subject: [OM] Re: cleaning sensors
From: "Scott Peden" <scotpeden@xxxxxxxxxx>
Date: Fri, 23 Feb 2007 10:15:29 -0800
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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