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03-12-2004, 12:35 AM
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#1 |
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Certified Audio Nut
Join Date: Jul 2003
Location: Washington State
Posts: 7,214
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Why do digital cameras use mechanical shutters?
My Panasonic Lumix digital camera has a mechanical shutter. I don't know about other cameras but why would a digital camera need a mechanical shutter? It seems like it could be done electronically. I don't know why I even thought of it. It just seems like one more mechanical part to break.
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03-12-2004, 01:07 AM
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#2 |
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Member (12 bit)
Join Date: Dec 2001
Location: St. Louis, Missouri
Posts: 3,294
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I was under the impression that none of them did have shutters. My camera is programmed to make a shutter-click sound when taking pictures, I guess for making traditional camera users comfortable...
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03-12-2004, 09:24 AM
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#3 |
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Certified Audio Nut
Join Date: Jul 2003
Location: Washington State
Posts: 7,214
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Are you sure it's programmed or does it actually have a shutter?
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03-12-2004, 09:51 AM
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#4 |
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Barefoot on the Moon!
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I had assumed they had shutters for *at least* regulating the iris.
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03-12-2004, 10:08 AM
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#5 |
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Member (11 bit)
Join Date: Feb 2001
Location: Blue Springs, MO
Posts: 1,766
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Here is a nice article that covers this subject. Apparently, all cameras need a shutter. There are two types of shutters in digital cameras--electronic and electro-mechanical. Most digital cameras have electro-mechanical and some have just electronic. in theory digital cameras don't need an electro-mechanical shutter but I guess that when worked in tandum with the electronic shutter you can get much finer control and shorter exposures -- as short as 1/10,000 of a second. I found it interesting that the electro-mechanical shutter in a digital camera is just the opposite of an electro-mechanical shutter in a film camera. In a film camera the shutter remains closed until the picture is taken. In a digital camera the shutter remains open until the picture is taken. Thanks for asking the question. I learned something. Very few film cameras have pure mechanical shutters.
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03-12-2004, 05:12 PM
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#6 |
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Certified Audio Nut
Join Date: Jul 2003
Location: Washington State
Posts: 7,214
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Thanks for that article. I new my camera had a mechanical shutter because when I do a long exposure I can hear the shutter click, then click again.
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03-12-2004, 08:45 PM
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#7 |
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Member (14 bit)
Premium Member
Join Date: Jan 2002
Location: The Great NorthWest
Posts: 12,594
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All cameras have some sort of shutter. Something has to regulate the light comming in. Noise is not a true indicator if it is mechanical or not. My last couple of cameras had the option of turning off or on the traditional shutter "sound." The easiest way to tell if you have a mechanical shutter is to be in a low light condition, and look directly into the lens, and take a picture. If it is mechanical, you will see the shutter operate, whether it makes noise or not.
TwoRails |
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03-14-2004, 09:03 PM
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#8 |
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Certified Audio Nut
Join Date: Jul 2003
Location: Washington State
Posts: 7,214
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I know it is mecahanical. I can see it.
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