Originally posted by JinDesu For the 70-135mm range - the 90mm/100/105 macros pretty much can be your prime in that region.
Yes, and the macros here are close in maximum aperture to other options. This is a good range to make a 90mm f2.8 macro fill in as a portrait lens, and delay getting something like the DA 70mm f2.4 until later. When you need the macro function too, it works, and the macro quality is a lot better than what you'd see from a close-focus zoom.
But if you'll only take portraits and very few macros, I would get a lens for the portraits. In this range, I have a Super-Takumar 85mm f1.9 and a Tamron 90mm f2.5 macro. On trips where I might run into any situation, I'll take the Tamron for flexibility. But if I really want a portrait and have some time to take it, the Takumar is the best choice. The Tamron is a lot sharper even wide-open, good enough so you can be off on the point of focus and no one notices except you. The Takumar's numbers would look terrible in a comparison test, its coatings require some care in use, it doesn't work easily with a flash, etc. The results are great, though. I'm glad I have it. (Today I might go for the Samyang 85/1.4 instead.)