I have had a few
people ask me for some tips on what camera setting to use when photographing the
moon. Clearly there are many variations
on composition and whether or not you want some identifiable foreground to provide
some context, so these thoughts are only a very general guide to get you
started.
Three things on your camera affect exposure (often referred
to as the exposure triangle). These are
aperture, shutter speed and ISO.
Changing any one will affect the others. With this in mind you may need to compromise a little on two of
these to keep the shutter speed at an acceptable level to prevent camera
shake. In short a little less depth of
field, but a fast shutter speed, or a slightly noisy image and a fast shutter
speed are much better than a blurry image due to a slow shutter speed.
Shutter Speed
As I have said when it comes to shutter speed the higher the
better and even if using a tripod you still need to avoid the actual movement
of the earth/moon rotation. As a
general rule with a tripod I try to use 1/100 sec and above. If hand held I aim for a shutter speed of at
least equal to the lens focal length. For example with a 400 mm lens aim for
1/400th sec or above.
Aperture (f number)
Lots of folk say you need to use a high f-number of f16 - f22
to get a good depth of field. I don't
recommend this for two reasons.
1. It reduces your shutter speed and means you must increase
your ISO to maintain it.
2. Another problem with a high f-number, is that while
giving an apparent increase in depth of field, it can actually soften the image
due to diffraction.
So with this in mind an f-number of say f5.6 to f11 is more
than adequate (I use f8 as a start point on my 400mm lens)
ISO
When it comes to ISO we ideally want and image that is
fairly noise free. With this in mind
100 ISO is ideal. That said most
cameras are capable of producing decent noise free images at much higher ISO's
and if you are struggling to get a fast enough shutter speed then increasing
your ISO will help.
So there you go, head out and give it a try, have fun.
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| Camera settings for this moon pic were: Camera: Canon EOS M. 1/200th sec at f8, ISO 100, Tripod. Camera set to AV. |
Text/images copyright David Forster/www.bluestoneimages.com
