D80 questions.

"Chris Malcolm" wrote in message
...
Robert Brace wrote:

"J?rgen Exner" wrote in message
...
nospam wrote:
In article IraNj.182926$pM4.116764@pd7urf1no, Robert Brace
wrote:

Not having used either on the D80, I suspect the corded one has the
potential to transmit movement to the camera, while the IR could be
inconvenient because of positioning.

how would the cord transmit movement to the camera??

It's a physical connection, therefore there is chance that you might
yank the cable and thus the camera when pressing the button.
Not likely but not completely impossible, either.

It is, in fact, very likely!
I use the D2 series' electrical release (10-pin type) frequently and if
you
don't take precautions against things as simple as the cord swinging, you
will see the results in extreme macro shots. Mirror lock-up is standard
usage also in this type of shooting.
If it is there in extreme macro, it's there in normal usage, just not as
visible.

I do notice such effects in normal usage when I'm trying for critical
sharpness. What is it about extreme macro (which I haven't played
with) that makes it more noticeable there?

--
Chris Malcolm DoD #205
IPAB, Informatics, JCMB, King's Buildings, Edinburgh, EH9 3JZ, UK
[http://www.dai.ed.ac.uk/homes/cam/]


I see it in the viewfinder as similar to displacement evident in extreme
telephoto usage when the camera is disturbed. I'm sure someone will chime
in with a terribly detailed explanation involving camera moments of inertia
and arcs of displacement at both the camera and subject location and how it
relates to optical magnification, etc, etc, etc..
Needless to say, it won't be me!
Suffice it to say, the strongest, most stable platform you can devise for
your camera/lens will always serve you in good stead!!
Bob