I doubt that the mechanism in the camera makes that much noise at all. try
using the DOF preview that would give an idea. I would also guess that the
weight of the whole diaphragm closing and metering mechanism would only be a
few grams. Most of the weight of a camera is in the rest of the body: film
advance mechanism, viewfinder and housings.
Regards,
/\/\ick...
+----------------------------+
__/) Mick Maguire |
((((| Email: [EMAIL PROTECTED] |
(\\\\_/) ICQ: 48609010 |
\ / |
\ /---------------------------+
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Shel Belinkoff
Sent: Thursday, September 13, 2001 10:47 AM
To: [EMAIL PROTECTED]
Subject: Re: Silent Lenses
Tom Rittenhouse wrote:
>
> Most of the noise comes from the mirror, Shel.
I know that.
> The lens mechanism is fairly silent.
I don't know how much noise the lens mechanism (within the lens)
makes, but I agree that it's minimal. However, there is also the
mechanism within the camera body that activates the mechanism in the
lens. Additionally, it's not just noise I'd like to reduce, but size
and weight as well. It seems to me that by removing the mechanics
related to operating the lens diaphragm, and removing the mechanism
that's used for metering purposes, a smaller, lighter camera could be
built.
Remember, Pentax had to make the mount larger when they went to open
aperture metering, and before the 42mm screw mount Pentax used an even
smaller diameter lens mount. The smaller mount was workable, at least
in part, because the lens had no diaphragm mechanism and didn't
require any coupling to a light meter.
> The shutter is no more noisy than on a Leica.
I suppose that would vary with the shutter design. I'd wager that a
vertical travel, metal focal plane shutter is louder than a horizontal
travel cloth shutter. Of course, it's hard to measure the sound of
just the shutter since the mirror is always in play. However, I
believe that a shutter can be made to be ~very~ quiet, IAC.
--
Shel Belinkoff
mailto:[EMAIL PROTECTED]
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