You asked
Is the tamron sp 15 30mm f 2 8 di vc usd g2 good for vlogging?
It's a good wide lens, but I wouldn't call it a first pick for vlogging. On a full-frame body it covers the 16-20mm range I like for arm's-length shooting, and the stabilisation helps with handheld walking shots. On the APS-C bodies it lists, it frames like 22-45mm (Nikon) or 24-48mm (Canon), which is too tight for most vlogs.
The bigger question is weight. The video guide says you'll hold the camera at arm's length for minutes at a time, so a lighter setup usually suits vlogging better. If you already shoot full frame, this lens is a strong choice. If you're buying for vlogs, start with a small APS-C or 1-inch camera with a wide lens, and plan for a microphone from the start, as the audio notes explain.
Written by Claude from this site's pages.