From the Manufacturer
The standard 3x zoom comes in an extremely compact size with an overall length of just 43.5mm. Covering wide-angle to a moderate telephoto, this lens is suitable for a variety of applications, including day-to-day shooting and traveling. With a digital-dedicated design as well as multi-coated lens components, this Micro Four Thirds lens boasts very high imaging performance.
To capture images, D-SLR cameras incorporate a device called an image sensor (CCD, MOS, etc.) that captures light in the form of electrical signals. However, since the image sensor's characteristics differ from those of film, a lens optimized for film photography may perform poorly with an image sensor. Developed explicitly to fulfill the potential of digital technology, the Four Thirds system is a new, open standard created with an eye to the future of DSLR cameras. The core design concept of the Four Thirds system is to facilitate optimization of the size, performance, and extendibility of digital cameras and lenses. In addition, a standardized lens mount allows photographers to freely combine interchangeable lenses and cameras from different manufacturers. This is the key feature of the Four Thirds system, the one that makes it possible to explore the full potential of digital photography.
The optics incorporates cemented lens of ED (Extra-low Dispersion) lens and HR (High Refractive index) lens, which have big different refractive indices, in order to remove the chromatic aberration. In addition, the optics with two double-sided aspherical lenses ensures high image quality. Close-up shooting at the tele-end is possible at a minimum distance of around 15cm from the lens front. It enables close-up photography up to the max. image magnification of 0.24x (0.48x: 35mm equivalent). All the lens surfaces except for the cemented ones are multi-coated to ensure clear image quality. The multi-coating also ensures clear images even on backlit shots taken with the sun in the frame by reducing ghosts and flares.