I don't think that mortars have anything other than a fixed firing pin
at the bottom of the tube. Nothing like a trigger mechanism, just a
fixed pin.
If not a high speed camera, I think that it would take a lot of luck and
many expensive mortar rounds expended the get this shot just right.
Mark Marr-Lyon wrote:
> I would guess that the shutter lag of whatever camera was used would
> be too slow to trigger off the mortar round firing. The picture was
> likely taken only a few milliseconds after the mortar was triggered,
> so you would have to pre-trigger the camera to catch the round. For
> this picture, I would also guess that the operators of the mortar
> would not be willing and/or able to attach some sort of timing device
> to trigger the camera at the proper time. If it were me taking the
> picture, my first try would be to get as high of a shutter speed as I
> could, set the motor drive as fast as it will go, start shooting when
> they either drop the round in the tube or are about to pull the
> trigger, and hope.
>
> Mark
>
> On Tue, Dec 22, 2009 at 6:03 AM, John Hudson <OM4T@xxxxxxxxxxx> wrote:
>
>> Assuming that the camera was a film camera I think it is doubtful that the
>> photographer used his finger to trigger the shutter! The chances of getting
>> the image just right as the projectile left the firing tube would be
>> incredibly long odds.
>>
>> Isn't it more likely that there were a sound or light activated trigger
>> mechanism attached to the camera ?
>>
>> jh
>>
>>
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|