Canon ef 28 135mm f 3 5 5 6 is usm vs tamron 35 150mm f 2 8 4?

I don't have a page for the Tamron 35-150mm f/2.8-4 on the site yet, so I can't give you a fair side-by-side. I'd rather not guess at its specs or price.

Here's what I can tell you about the Canon. The Canon EF 28-135mm f/3.5-5.6 IS USM is a stabilised, autofocus zoom for Canon EF mounts. On full frame it covers 28-135mm, and on APS-C it frames like about 45-216mm. Its aperture narrows as you zoom in, so it's dimmer at the long end. That matters in low light. If you want to understand why that happens, the Lenses guide explains the f-number and constant-aperture zooms.

If your main interest is portraits, the Portraits guide covers which focal lengths and apertures work best.

Written by Claude from this site's pages.