I can't understand it from the description but I'm satisfied by the fact
that there is another piece involved beyond the mirror. The fact that
the curved metal curtain comes up from the bottom would seem to be
counteracting what would otherwise be a longer exposure since, without
it, the opening on the bottom side of the mirror would have been open
longer than the top.
Chuck Norcutt
On 1/8/2011 1:34 PM, Jim Nichols wrote:
> Chuck,
>
> I just took out the Exa, removed the lens, opened the back, and tried to
> determine exactly what happens when the shutter actuates. Even at 1/25 it
> is not easy to see. On Bulb, it is a little easier. Everything moves in
> the vertical direction. The mirror flips up, leaving a direct path from the
> lens to the film plane. When the exposure is completed, a curved metal
> curtain rotates up to close the light path. It is not brought up by the
> mirror, as Andrew thought, but operates on its own, based on the shutter
> speed selected. When the shutter is rewound, the mirror-curtain assembly is
> rotated downward to place the mirror in position for the next shot. I hope
> this helps.
>
> Jim Nichols
> Tullahoma, TN USA
> ----- Original Message -----
> From: "Chuck Norcutt"<chucknorcutt@xxxxxxxxxxxxxxxx>
> To: "Olympus Camera Discussion"<olympus@xxxxxxxxxxxxxxxxx>
> Sent: Saturday, January 08, 2011 6:17 AM
> Subject: Re: [OM] Might be of interest to Olympus list EP 2
>
>
>> I didn't see any exposure variation in Jim's two images. The
>> explanation that the mirror is not the actual shutter mechanism makes
>> more sense.
>>
>> Chuck Norcutt
>>
>> On 1/7/2011 4:51 PM, Andrew Fildes wrote:
>>> It's not a simple mirror flap but the mirror pulls up a curved metal
>>> curtain when fired. It has a very solid sound when fired, like a
>>> medium format camera. Andrew Fildes afildes@xxxxxxxxxxxxx
>>>
>>>
>> --
>> _________________________________________________________________
>> Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
>> Archives: http://lists.thomasclausen.net/mailman/private/olympus/
>> Themed Olympus Photo Exhibition: http://www.tope.nl/
>>
>>
>
>
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|