31/08/2025
These are my own guidelines for macro, you might disagree:
Definition. Macro is magnification by lens at 1:1 or higher. The resolution you get out of this depends on both optical quality and sensor pixel density.
Extention tubes guidelines. 50mm lens with full set of extention rings bring you close to 1:1. A 100mm 1:1 macro with full set of extention tubes bring you close to 2:1
Aperture changes as you get closer anz magnification increase. Aperture is defined at infinity, when you are at 1:1 the f4 on the lens becomes more like f8 in reality. Consider this when you step down for dof, if max sharpness is important you might not want to go smaller than the f8/f11 range.
Details can be greater at lower magnification if you use smaller sensor with high pixel density in combination with good optics. So some times small sensor/high pixel density and less than 1:1 magnification makes great macro shots, even though magnification is not within the macro definition.
Doing single shot macro mind your aperture. Dof is allways small and gets smaller by magnification. As magnification gets real high, sharpness is allways diffraction limited, so stepping down for DOF and sharpness will only make things worse.
Highlights are easily burned out, so mind your highlights when deciding for exposure. It is often neccesary to underexpose to maintain the highlights. Fix this in post.
Images does NOT come finished straight out of camera, so work on your PP skills.
Macro are best shot with camera in full manual, be it exposure or focus. Dont use auto iso. AF might be useful, but mostly in the close up range, diving into the macro range AF is rarely helpful.
Lighting is difficult. You need a lot of light and you need good lighting. The natural available light is often beutifull. Artificial lighting is often neccessrh, but needs a lot of work to be good.
Know your camera and know it well. Take full controll on your camera. If you are in slightest doubt a