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by Ian Bock
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Artists often want to photograph their paintings - it is
not easy to get a good likeness. Ian Bock, an expert photographer, discloses
a few secrets of the trade:
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There are a
number of basic problems in making a good likeness:
1. Lighting:
The secret is even lighting of daylight quality.
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Sunlight:- this is good. It
is even and bright enough not to need slow shutter speeds. |
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In the shade: also good but a
tendency to be a little blue which is usually corrected when a print is
made. |
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Overcast sky:- also a good
even light, does not bring out the colours quite as well as sunlight. |
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Room (tungsten and QI)
lights:- these are orange when compared with sunlight and your prints will
have an orange cast which cannot be completely removed. There is a blue
filter for the camera (code 80B) available to correct this cast. You must
also have equal lights placed on each side of the painting. |
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Fluorescent:- Not recommended
– there is a correction filter but it is a poor performer when accurate
colour is needed. |
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Flash:- Flash on the camera
is a no-no – there is no way you can avoid the hot spot reflecting back.
The colour – the same as daylight – is good. Two equal flashes, one on
each side at 45º is ideal. |
2.
Camera and its position:
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Use an SLR camera:- The more
common “point and shoots” do not have a good enough viewfinder to get
exact framing, their exposure meters and lenses are not as good. |
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Use a tripod if you want
exact framing. Most of us cannot hold the camera still enough to maintain
good framing while adjusting focusing, etc. |
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A zoom lens helps in framing.
Modern zoom lenses are nearly as good as fixed lenses unless you want very
big enlargements. |
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Get the camera square on to
the picture. The easiest way to do this is to place a mirror at the centre
of the picture and arrange the camera so you see its reflection in the
mirror when looking through the viewfinder. This reflection must be at the
centre of the viewfinder and most SLR cameras have some sort of marking at
the centre of the finder. Don’t forget to remove the mirror before making
the exposure. |
3. Film, etc.
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Use 100m or 200 speed film
for better quality. |
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Exposure, framing etc. is
much more critical when using slide film. |
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Prints can be cut to size
later if framing is not good. Slides may need masking – use aluminium
kitchen foil inside the mount. Do not use plastic tape on the film – it
will bleed and is not archival. |
4.
Reflections:
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Flash on the camera and
bright lights behind you will give unwanted reflections off the picture
especially if it is behind glass. I have a large sheet of matt black board
(eg. mount board) with a hole in the centre for the lens. This board needs
to be at least twice the size of the picture being photographed. |
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Polarising filters. These are
next to useless. They will not affect reflections coming at 90º to the
picture and have the greatest effect when the light is reflected at about
40º. They have been used successfully to remove reflections off raised
brushstrokes when using lamps (or flash) on each side at 45º to the
picture AND you have polarising filters on the lamps. |
I have lived
in Mt. Waverley for over 40 years and have been an interested watcher of the
Art Society since its formation. As a photographer, my time has been spent
with the Melbourne Camera Club but my daughter, Sue Stergo, is a member of
WAS.
Contact me on email (bockey@melbpc.org.au)
if you want a digital copy of this article emailed to you.
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