Olympus's standard MFT kit zoom covering 28-84mm equivalent — compact and lightweight for beginners.
The Olympus M.Zuiko Digital ED 14-42mm f/3.5-5.6 — the 2009 first-generation standard kit zoom for Micro Four Thirds — was the original zoom lens for the E-P1 and early PEN bodies, providing a 28-84mm full-frame equivalent range. At approximately 150g and 40.5mm filter thread it is very lightweight. The Mk I has a rotating front element rather than internal focusing. This is the original version; later versions (Mk II, Mk II R, EZ power zoom) use different designs.
The optical design uses 9 elements in 8 groups including aspherical, high-refraction, and ED elements. Seven aperture blades. The 40.5mm filter thread is compact. At approximately 150g the lens is very lightweight. Minimum focus distance of 0.25m. AF motor provides standard acquisition. Variable aperture from f/3.5 at 14mm to f/5.6 at 42mm. The Mk I has a rotating front element — circular polarisers require re-alignment after focusing.
The 28-84mm equivalent covers the standard kit zoom range for general photography. At 150g the original 14-42mm adds near-zero carry weight to a PEN or OM-D body. The rotating front element is the practical limitation for polariser and graduated filter use. For photographers primarily shooting without filters, the lightweight design and AF capability are adequate for everyday MFT kit lens use.
On the used market the M.Zuiko 14-42mm f/3.5-5.6 Mk I is very affordable as the original MFT kit zoom. Condition checks: AF motor response, zoom ring smoothness, and 40.5mm front element for marks — note the rotating front element. The Mk II/IIR uses internal focusing; the EZ is a power zoom pancake. Compatible with all Micro Four Thirds bodies from Panasonic, Olympus, and OM System.