Some points about filters, apart from changing colours of
the projected images, other uses might not be so obvious, for example plate 49
(Poetic Portfolio) is a case where the colour change was more
effective than any masking. The idea was to combine the lamb slide with one of
clouds, but in order to mask the white clouds where they overlapped the white lambs it was
found that far too much brilliance was lost. But by changing the clouds to
blue no masking was then needed.
Plate 30 (above) was created by photographing the projected two identical slides of the
Disneyland castle. However one slide was projected the wrong way round, with
the two towers aligned, hoping to create a more magical look. It turned out to
be rather disappointing! It looked very obvious that one slide was on top of
the other, none of the magic here, even with some careful masking. But soon it
was completely transformed simply by using filters, a pink colour in one, and blue in the
other, these colours alone killed some of the unwanted overlapping images and so improved
the scene dramatically.
All these studies have been created by projecting on to a screen, but they could just as
easily, have been on to a texture if one had wished.
There are no reasons why more than two images should not be
projected all at once, providing the projectors are available.
There have been a number of occasions when four projectors were in use together.
However three have been the most that have normally been used, with the
fourth one occasionally; simply projecting the author's signature in to the scene.
As an example see plate 31 (above), each portrait was projected individually,
masked to blend together, and then the third transparency was of a part of an antique rice
paper water colour painting, owned by the author. Most of this image was
masked away leaving just the parts in view around the portraits.
Incidentally, a signature, or in fact any text can be easily added to the picture.
If the signature, or text required, is written in black on a white page, it
can then be photographed with black and white film. The negative created now
provides the signature, or text, in white against black. By projecting this
negative, with a filter placed behind it, it can be made to appear in any colour desired.
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