Is the pentax smc da 60 250mm f 4 ed if sdm worth it?

It's worth it if you want reach on a Pentax K body. This is an APS-C zoom at f/4 that frames like 90-375mm on full frame, so it covers everything from portraits-length telephoto to distant subjects in one lens. It's a sensible choice for wildlife, sport, or anything you can't get close to.

Two things to weigh. It isn't stabilised, so at the long end you'll want a fast shutter speed to keep things sharp handheld. And f/4 is not a wide aperture, so background blur comes more from distance than from the lens itself. If you mostly shoot people, the Portraits guide explains why a telephoto like this suits headshots outdoors. If you want to know whether an APS-C body is enough for this kind of shooting, the Sensor sizes guide makes the case that it usually is.

Written by Claude from this site's pages.