Re: Creative negative/positive sandwiching techniques

[Tom Campbell <tcphoto@xxxxxxxxxxxxx>]

Ken Sinclair wrote:
> 
> Rolland,
> 
> >I recently spotted an old issue of "Popular Photography" in which beautiful
> >soft focus pictures were taken with slide film.
> (snip)
> >2.  Take a picture of your subject with the lens out of focus and with the
> >    camera set to overexpose the slide film by one stop.
> 
> >3.  Take an identical picture of your subject, but this time, make sure the
> >    subject is in focus and that the camera is set to overexpose the slide
> >film
> >    by two stops.
> 
>  I do believe this should be "underexpose" by one stop on each exposure,
> otherwise you would end up with final exposure 2 stops overexposed.

No!  Assuming there are overlapping areas (which this technique
implies)  if you're going to sandwich chromes you have to reduce the
individual densities (via overexposure) for the combination to work out.

Now, I haven't seen the examples, but two-stop overexposed chromes sound
a little thin to me.  Perhaps since the "soft" slide will dominate it
will look ok.

Done many sandwiches, but never with IR---good luck!

Tom Campbell
>
*
****
*******
******************************************************
*  To remove yourself from this list, send:          *
*         UNSUBSCRIBE INFRARED                       *
*       to                                           *
*         MAJORDOMO@xxxxx                            *
*----------------------------------------------------*
*   For the IR-FAQ, IR-Gallery and heaps of links:   *
*  http://www.a1.nl/phomepag/markerink/mainpage.htm  *
******************************************************

------------------------------