What kind of SLR lens is good for microphotography?

Personally, I don't think you should choose zoom, because you have taken an image that has been imaged by a microscope, and it doesn't involve macro and other issues. In fact, you just added a lens indirectly, but there is no excuse. It is recommended to focus. Have a small spittoon at hand, if you have it, you can use it. It should work well!