On Wed, 25 Jun 2008 14:21:07 -0700, John McWilliams wrote:
>> It allows the use of cheaper, less expensive tripods. Otherwise,
>> smooth arcs can get the 'wigglies'. Not that they don't sometimes
>> make interesting shots. This effect can really be accentuated by
>> shooting handheld! 
>>
>
> Yes, that's the conventional wisdom, but unless one is stabbing at the
> shutter, or breathing heavily, or is palsied, I've not found that a
> careful pressing of the shutter while camera is mounted on a decent- or
> even poor- tripod introduces any movement. Then again, my main lenses
> have VR.
Perhaps. I can't say for sure how carefully I pressed the shutter
yesterday (while testing several cameras/lenses), but one shot went
off without the expected time delay. I don't recall "stabbing" the
shutter, but since I was using a cheap Sunpak tripod that was on
hand instead of my usual Manfrotto, I decided to immediately re-do
the shot using the self timer. The shot taken without using the
self-timer (it used a 3 second exposure) had a very obvious double
image caused by camera movement. VR helps quite a bit, but using a
tripod with VR disabled usually produces much better images than
shooting handheld with VR turned on, except when using exceptionally
fast shutter speeds.
I think that I'll try to pick up the Manfrotto tripod some time
next week to see whether the double image can be easily duplicated
when the self timer isn't used. As bad as the Sunpak is, it beats
handheld shots by a wide margin if the exposures are long enough.