Is the pentax smc da 17 70mm f 4 al if sdm good for vlogging?

Not really, at least not as a first choice. It's a good everyday zoom for stills, but it's on the long side for vlogging. On APS-C it frames like 26-105mm on full frame, so its widest setting is about 26mm equivalent. My vlogging guide suggests around 16-20mm full-frame equivalent at arm's length, since a 24mm view already crops you tight once stabilisation crops in further. This lens isn't stabilised either.

The Pentax smc DA* 16-50mm f/2.8 starts wider, at 16mm on APS-C, though that's still tighter than the guide's ideal.

Whichever lens you use, check the camera body for a screen that flips to the front and a microphone input. The lens can't supply those, and bad audio ruins more videos than soft focus.

Written by Claude from this site's pages.