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Re: 3-D motion blur


  • From: Eric Goldstein <egoldste@xxxxxxxxxx>
  • Subject: Re: 3-D motion blur
  • Date: Fri, 15 Mar 1996 21:11:48 -0500

Linnstaedt@xxxxxxx wrote:
>  It is impossible to view the
> holy sites without occassionally having other persons block your view.


Reverand-

Both the holy site and your photograph of it sound beautiful and moving. I also sounds as if 
the blur of the worshipper moving through the image is an integral part of the composition as 
you see it.

I wanted to mention that there are a couple of techniques of using time exposure to 
"depopulate" even the most heavily trafficked places. I have used them myself to take some 
rather unnaturally empty images of locations usually flooded with humanity:

(1) After opening the shutter(s) of your camera, cover the lenses (say, with black index or a 
black gloved hand) while the unwanted element is moving within the frame. Then uncover when the 
frame is clear. Repeat until the total time the lens(es) have been uncovered equals the desired 
exposure.

(2) Slow film, ND, small aperture, and reciprocity failure are all combined to yield an 
exposure time in the vacinity of 60 minutes. During this exposure, people and objects in 
constant motion are of no consequence; only those animate objects which come to rest for about 
4 or 5 minutes must be blocked from reaching the film by using the same technique as above (in 
this case, a hand will do fine). In this way, even the busiest of scenes, such as city streets 
or tram stations, are captured as eerily vacant.

Again, I am not suggesting that your photograph should have eliminated the ghostly image you 
describe, I am offering techniques to eliminate such blur if you so choose in the future.

Eric G.
egoldste@xxxxxx


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