Take a look at the best Zoom lenses available for you Canon 7D Mark II DSLR, starting from my all time fav 17-55mm F2.8 lens and moving forward
Canon EF-S 17-55mm f/2.8 IS USM: The lens is capable of creating highly sharp images with rich color depth and excellent bokeh. It offers a versatile wide angle to short telephoto zoom range. It performs well even in the low lightning conditions. It features Canon’s optical image stabilization technology that provides 3-stop compensation and is proven beneficial mainly while taking hand held shots. Additionally the lens body incorporates a USM for smooth and accurate AF. The lens is coated with Super Spectra coating that reduces ghosting and flare.
Canon EF 70-200mm f/2.8L IS II USM: the lens delivers very high quality images with great sharpness and rich color detail. The lens is built with highly durable material and it additionally is resistant to dust and water. It features IS II Optical Image Stabilizer that reduces the camera shake effect up to 4 stops of correction. The OIS is considered to be really beneficial while taking hand held shots. For acquiring fast, precise and quiet AF it incorporates an USM.
Canon EF 75-300mm f/4-5.6 III USM: another pro lens from canon that is suitable for various types of photography including sports, portraiture etc. To reduce the camera shake effect it features Optical Image Stabilization that provides 4 stop compensation. It incorporates a high speed USM for quick, precise and silent AF. Apart from AF it also allows the user to manually control the focusing of the camera. The lens consists of an artificial fluorite element with 2 UD elements to minimize secondary aberrations. The lens is comparatively lighter than the other lenses with the same specs.