welcome to the forums
you will find friendly members and a lot of knowledge here
some of us [
moi included
] love to advise others on how to spend their money
looking at macro, may I suggest you look at this article:
Quote: The Advantages of a Dedicated Macro Lens
Achieving lift-size magnification
By PF Staff in Tutorial Videos on Apr 4, 2016
Read more at:
The Advantages of a Dedicated Macro Lens - Tutorial Videos | PentaxForums.com
I like the members of the Pentax 100mm F2.8 Macro family of lenses myself:
Quote:
Pentax-D FA 100mm F2.8 WR Macro Review
Specifications
The lens covers the full 24x36mm format, not just APS-C. The aperture blades are rounded, delivering a smoother bokeh which is important for a macro lens. However, unlike its predecessor, it has no aperture ring.
The optical design is the tried-and-proven formula of the previous generation D FA 100mm F2.8 Macro lens, which in turn had inherited the optical design from the well-respected FA 100mm F2.8 and F 100mm F2.8 macro lenses introduced in 1991 and 1987, respectively. None of these earlier lenses had rounded aperture blades. . . .
Read more at:
Pentax-D FA 100mm F2.8 WR Macro Review - Specifications | PentaxForums.com Reviews
macro choices can depend on whether you want 1:1 as well as are you doing " field " macro or " studio " macro