Used Pentax SMC DA 50mm f/1.8 Autofocus Lens

Condition & contents

At a glance: Pentax SMC DA 50mm f/1.8 - affordable Pentax K-mount autofocus standard prime.

About this lens

The Pentax SMC DA 50mm f/1.8 is Pentax's affordable autofocus standard prime for K-mount APS-C DSLRs - 50mm on APS-C gives a 75mm full-frame equivalent, ideal for portraits. SMC multi-coating, compact form, internal focus. A popular first prime for Pentax DSLR users.

Build & handling

Works with

• Pentax K-mount APS-C DSLRs - all bodies
• Pentax K-mount full-frame (K-1, K-1 II) - works with slight corner fall-off at f/1.8
• Screw-drive AF works on all Pentax DSLRs (all Pentax K-mount DSLRs have a body AF motor)

Best for

A capable affordable Pentax prime - 50mm f/1.8 in DA-designation means APS-C coverage (though it works on full-frame K-1/K-1 II too, just reaches the edges slightly less). Light, compact, sharp. A popular first prime for Pentax users moving beyond kit zooms.

Frequently asked questions

Will it autofocus on my Pentax K-70 / K-S2 / entry-level K-mount?

Yes - unlike Nikon's entry-level DSLRs, every Pentax K-mount DSLR has a built-in body AF motor, so screw-drive AF lenses like this 50mm f/1.8 autofocus on all Pentax bodies.