The Sony SELP28135G is a top-quality powered zoom lens for 35mm full-frame format cameras, created to satisfy professional moviemaking requirements, including the high resolution HD and 4K formats. Focus breathing and zoom image shift have been reduced to an absolute minimum, while aspherical elements and advanced multi-coating technology effectively suppress aberration. An SSM (Super Sonic Wave Motor) drive system has been employed for precise, quiet zooming. Independent control rings for Zoom, Focus, and Iris (aperture) are provided for the first time in an a lens, including other features such as image stabilization, no "breathing" technology, a super sonic wave motor drive for zoom with internal zoom structure, and many more that are essential for high quality filmmaking.
No "Breathing" Technology
When making movies you're frequently focusing while shooting, either with autofocus or manual focus. A lens that has not been designed with movies in mind might exhibit "breathing", or variations in the angle of view while focusing which can be a jarring distraction. The SELP28135G features an optical design and control technology inherited from Sony's professional camcorders that ensure no breathing.