Pentax SMC Pentax-M 28mm f/2.8

SMC Pentax-M 28mm f/2.8 is Pentax's moderate wide-angle prime in the SMC Pentax-M series — the K-mount counterpart to Nikon's 28mm f/2.8 AI-S and Canon's FD 28mm f/2.8. The "M" designation indicates the compact-body Pentax-M lens line of the late 1970s; "SMC" indicates Pentax's Super Multi Coating that reduces flare and ghost reflections.

Key features

• 28mm focal length on 35mm full-frame
• f/2.8 maximum aperture
• 49mm filter thread
• Pentax K bayonet with SMC coating
• 7-element design
• Compact body (M-series sized for compact bodies like MX/ME Super)

Use case + rendering

• Street, documentary, environmental
• Sharp wide-open at center; corners by f/5.6
• SMC coating produces clean rendering with controlled flare

Compatible bodies

• All Pentax K-mount cameras: K1000, MX, ME Super, LX

Related lenses

• SMC Pentax-M 50mm f/1.4 — fast standard alternative
• SMC Pentax-M 50mm f/1.7 — kit standard alternative
• SMC Pentax-M 135mm f/3.5 — telephoto alternative