Reviews and Problems with Pentax smc DA* 16-50mm F2.8 ED AL (IF) SDM
Showing 1-4 of 4
2 December 2013
Excerpt: I guess I got stuck with one of the bad ones. The AF is locked up right out of the box and not functional. As for MF it seems quite nice - but not really going to test since I have to send back. There really seems like it is a mixed bag for this lens. I have found quite a few reviews that have this lens' AF functionality failing quite often. For the price, Pentax should really do better. I love every other Pentax lens I own - This one left me quite a bit disappointed.
Summary: Lens was perfect. Not a mark on it. Performed faultlessly, until 30 days after I got it, then focusing motor quit altogether. Now I wonder how much repairs will cost. Hope that "great price" I paid plus repairs is still less than the cost of a new lens.
Summary: My intention was to buy this lens so I could replace one that I got in a kit with K10D.Unfortunatelly, my old lens (Pentax 18-55mm f/3.5-5.6 with price less then [$]) does much sharper photos then brand new Pentax 16-50mm f/2.8. I run series of tests for all appertures, and it appears that this lens becomes sharp at f8.0, but not before that.
Summary: Nach Rücksendung des ersten Objektiv wg. erheblichem Back-Focus leidet das Ersatzobjektiv an SDM squeaking (siehe Pentax Forum). Beide Modelle weisen eine hohe Seriennummer auf (Status Nov. 2011) welche entsprechend der Serial DB im Pentax Forum eigentlich nur noch vereinzelt Probleme machen sollten. Im Vergleich zu den Ratings mancher Kit Objektive ist man bei Pentax offenbar besser aufgehoben im unteren Preissegment zu investieren.