Once again the DOF is very very shallow, so focus stacking often accompanies micro photography. Using light diffusers definitely helps getting better results. Adjusting the lights position can be tricky. This is why most micro setups are stationary. You have to pretty much blast your subject with the lights and use very slow shutter speed. There isn’t a lot of space between the subject and the lens so everything is darker. The subjects & the photographing distance get even smaller and smaller. My view is that what places a photo in this category is the combination between the lens and the higher magnification – not just one of those factors on it’s own. Not only because of the type of lens used, but also because of all the other changes done to the setup when attaching the microscope objective to the camera. So even if you can achieve that same magnification with reverse rings or extension tubes – but you used a microscope objective – the photo should be refereed to as a Micro Photography. The magnification is grater – microscope objectives usually start at magnification 4:1. Micro Photography is the hardest one to achieve – out of the 3. Magnification ratio for MOs typically start at 4:1 and can go up to 100:1 or more. MICRO is a photo taken at very close distance with the use of a microscope objective.
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