This is I share what I know about macro lensa,
Focal distance of the macro lens generally ranges from 50mm to 200 mm. Although most zoom lenses carry a macro setting, typically the ability to zoom an image is less than half the size of a real macro lens, and the comparison starts at 1: 1 and no less. A 50-60 mm lens is suitable for general macro functions, but if you want a sharper subject, you should use a lens with a distance of 100mm, but the price is more expensive. For objects such as butterflies and dragonflies, the selection of this type of lens is very suitable, because the focal length is also must be more focused. A lens with a distance of 150-200 mm is the most expensive, but you will get a sharper image when photographing a flying subject, like a butterfly.
Your photo is very beautiful, thank you sir @r2cornell for sharing in steemit. You are great photographer...
Thank you, and thank you for the great information on lenses!