photo:microfourthirdsmacro
macrophotography for Micro Four Thirds cameras
see also:
A small rose bud using Panasonic GH-1 with Olympus ZD 50mm f/2.0 macro and Canon Ring Flash
introduction
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no mirror to cause camera shake which can be a real problem at high magnification photography such as 1:1 and higher
no mirror to continuously have to move out of the way to allow accurate magnified live view manual focus (autofocus is rarely suitable to macrophotography and never to microphotography)
flip out LCD screen so you don't have to bend down and look through a viewfinder
almost any macro lens ever made can be adapted to work
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a nice compromise on image quality, noise at higher ISO levels, camera and lens size (easier to use in the field without a tripod)
image stabilisation potentially available with any lens (if you use an Olympus body), although IS is not usually as effective at macro magnifications although the new 5-axis 5EV IS of the
Olympus OM-D E-M5 camera and later models should be handy!
off-camera TTL flash options available (eg. Olympus Ring flash or Twin flash, or Metz Ring flash, etc)
the cropped sensor gives even greater magnification such that a 1:2 macro lens (eg. Olympus ZD 50mm f/2.0) covers the same subject area at closest focus as a 1:1 macro lens would do on a full frame dSLR.
the smaller the sensor, the less magnification factor of the lens is needed for a given subject size
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macro flash
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if the Olympus macro flash system cannot be attached to a lens, it can be hand held, or alternatively:
Olympus also have a cute tiny, cheap, twin flash for macro flash on Olympus Pen cameras.
macro extension tubes
AF macro lens options
for outdoor work, my preference would be the Olympus 60mm macro
if on a budget or you want higher magnification (mainly for indoor work), or, for underwater use, and don't mind losing a few features, then the Olympus 30mm macro is worth a look
if you have Panasonic camera, then the Panasonic versions with OIS may be more attractive
Panasonic 30mm f/2.8 OIS 1:1 macro
Panasonic Leica-D 45mm f/2.8 OIS 1:1 macro
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high quality 1:1 macro lens with optical image stabiliser
IF, close focus 15cm, 225g, 63mm long, 46mm filter, focus limiter,
cannot attach Olympus macro flash system but these can be used hand held
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Olympus mZD 30mm f/3.5 macro
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close focus at 9.5cm giving macro to 1.25x (2.5x in full frame terms) and working distance of 14mm from end of lens, gives a field of view down to 13.9 x 10.9mm able to reveal subjects the unaided eye cannot see
AF is 20-30% faster than Olympus m.ZD 60mm f/2.8 macro lens, and smaller, lighter, less expensive and with closer macro, but also shorter working distance and wider field of view and not weathersealed and no focus limiter
compatible with auto focus stacking with certain cameras such as the E-M1
$US299
Olympus M.ZD 60mm f/2.8 1:1 macro lens
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a very nice, compact, light, high image quality weatherproof lens
fast, silent AF
internal focus
focal distance limiters improve AF performance
adapter available for the Olympus macro flash system
for most macro purposes, this is THE BEST lens for macro for MFT if you can afford it
$US599
slow AF macro lens options
Olympus ZD 50mm f/2.0 macro lens
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professional level 1:2 macro
slow AF but one of the sharpest lenses ever made
52mm filter thread
adapter available for the Olympus macro flash system
can use the superb Olympus EC-20 2x converter to double the magnification without shortening working distance
Olympus ZD 35mm f/3.5 macro lens
manual focus macro lenses
How to shoot a 36x24mm subject
the Olympus ZD 50mm f/2.0 macro at it's closest focus will achieve this magnification
set your camera to manual focus
turn the camera on
rotate lens manual focus ring until it is at closest focus
set exposure mode to manual or aperture priority
set aperture to f/11 (perhaps f/16) for optimum compromise between depth of field and sharpness
move camera in and out until image looks almost in focus (this will be ~10cm from the front of lens to the subject - the “working distance”)
repeat above in magnified live view until you have precise manual focus
if using available light
set ISO to give an adequate shutter speed for correct exposure
if using manual exposure you will need to manually set the shutter speed
if hand held, at such high magnification, you will need a fast shutter - perhaps 1/250th sec or faster
if using ring flash attached to lens
set ISO to 100-200 otherwise the ring flash even at its lowest output setting may be too bright at f/8
as the ring flash to subject distance will always be constant for closest focus with this lens, you can use manual exposure on the flash so it decreases variability - typically with the above settings you will need to use 1/32nd or 1/64th flash output.
once your exposure is close, you can then make fine adjustments to flash exposure by minor changes to ISO or aperture
alternatively, you can use TTL flash but be aware if your subject fills only a small part of the frame, you are likely to get erroneous results which is why I prefer manual exposure flash.
set shutter speed for ambient background exposure
having the shutter at flash sync of 1/160th or 1/180th sec (depending on model) will generally cause background to be very dark, even black unless it is in bright sunlight and a light color.
to brighten the background you have several options including:
increase shutter duration - this will not effect flash exposure but you may need a tripod to avoid blurring your subject!
use another flash to expose the background
ensure background is a light color and in bright sunlight (or use a reflector)
optionally, add a EC-20 2x teleconverter
this gives you 2 main possibilities:
allows double the magnification at closest focus so subject size to fill the frame will be only 18mm x 12mm
allows same subject size but at approx. double the working distance of ~18cm instead of ~10cm.
remember this doubles your effective f/stop.
alternatively, one could add a Four Thirds 25mm extension tube to the Olympus ZD 50mm macro lens to double the magnification but your working distance will halve, while your effective f/stop still increases, and thus I find a 2x teleconverter much more versatile, and more expensive.
photo/microfourthirdsmacro.txt · Last modified: 2017/11/25 15:29 by gary1