Transcript Macro Photography - Powerpoint version

Macro
A presentation for Kelso Camera Club
by Norman Dodds
What is macro?
• From Makros – a Greek word meaning large, long
• Macro is the term used to describe photographs where the subject is
recorded as life size or up to 10 times bigger than life size.
• Close-up is where the subject is recorded between one tenth of its
actual size to life size.
• Macro and close-up are often used interchangeably!
What do you need for macro photography?
• A camera which can focus close to the subject –
many compacts have a macro setting
• A reversing ring – allows you to fit your lens the wrong way round!
• A close-up lens – an advantage of this it doesn’t reduce light.
A disadvantage is that it will reduce sharpness.
• Extension tubes – these are fitted between the camera body
and the lens. No reduction in sharpness but they will reduce light!
• A dedicated macro lens!
Macro lenses
• Macro lenses generally come in several ranges
 50-60 mm
 90-105 mm
 150-180 mm
• The advantage of the bigger focal lengths
is that you can be further away from your subject.
• The disadvantage is that they usually cost more!
Taking macro photographs
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Subject
Focussing
Lighting
Exposure
Movement
Subject
• Almost anything small!!
• Flowers, insects, household objects are all popular subjects
• Arrange your ‘set’. At close range everything is magnified so don’t
be afraid to remove that nasty bit of grass or anything else that
shouldn’t be there!
• Create a background – even a piece of material behind your subject
can make a huge difference
Focussing
• By definition you will be very close to your subject so
depth of field will be very small
• A TRIPOD IS ESSENTIAL!!
• There are 3 ways to focus:
 Using TTL automatic focussing
 Using manual focussing
 Using live view focussing (if your camera allows this)
Lighting
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Daylight
Artificial light – torches, table lamps
Off camera flash
Ring flash – the ideal solution – but expensive!
BEWARE OF NASTY SHADOWS!!
Use reflective, absorbent or translucent materials
out of shot to add, reduce or diffuse light
Exposure – ISO, shutter speed, aperture
• ISO – 100 ISO is ideal but you may need to increase this if light is low
• Shutter speed – if your subject is completely still and you are using a
tripod, then shutter speed can be anything you like! You may wish to
increase this if your subject is moving.
• Aperture – depth of field is very limited so this suggests a small
aperture. However image quality will be reduced at very small
apertures. Somewhere between f11 and f16 is generally an
acceptable compromise.
• EXPERIMENT! (Check your histogram!)
Shooting with Photoshop in mind
• Make a composite image:
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Set up your shot using a tripod
Take two or more shots of the same subject
Change the point of focus with each shot
Use Photoshop to merge the images
• This technique is called Focus Stacking
Focus Stacking
Questions?