Re: slit width experiments, more questions than answers

[Bill Glickman <bglick@xxxxxxxx>]

Ron


> The auto exposure has me puzzled.  My logic says it shouldn't work very
> good.  Imagine a pan shot of a row of dark houses on a clear blue sky.  As
> the camera pans, it would speed up and slow down to "correctly" expose for
> the dark houses, yet this would screw up the even blue sky that you would
> only get by a constant speed.  As well, in fast shots certain laws of
> physics must come into play and give banding problems.

Actually under the right circumstances, i.e. blending of light, not major
light changes, the 220 VR actualy works quite well in auto exposure mode.
An experienced user can tinker with the very sophisticated software that
allows for adjustments to what the camera wants to expose for.  It makes a
preliminary look to see how best to expose the scene, then offers you a
graph showing the exposure throughout the shot.  However, with radical start
/ stops, banding will occur.  But with minor speed changes, the camera is
quite effective assuming it is not working at its fastest speeds.  Of all
the unique features about the 220 VR, I would say the sophistication put
into auto exposure is truly a remarkable accomplishment.  Although I rarely
use this feature, since I am not sure when banding may occur till I process
the film, in which time it is too late to get the shot again...

Bill G