The PENTAX smc P-DA J 16-45mm F4.0 ED/AL is recommended for use with digital cameras. It features a 3X zoom ratio with focal lengths covering ultra-wide angle to normal ranges, incorporates a high-refraction extra low dispersion (ED) glass element to produce a high-resolution, high-contrast image with true-to-life color rendition, and aspherical lens elements to help transmit the light more efficiently through the lens to the film.
The lens features 8 aperture blades. The filter size is 67mm. The Canon EF 70-200mm F4L USM is pretty compact for a moderate aperture tele zoom with a size of 76x172mm and a weight of 705g so unlike its f/2.8 brothers and sisters it doesn’t feel like a brick in your camera bag. Adding the barrel-shaped hood increases the length substantially.
The Tamron SP AF17-50mm f/2.8 XR Di II LD Aspherical [IF] is a lightweight, compact, fast standard zoom lens designed exclusively for digital SLR cameras. The focal length of this lens is equivalent to approx. 26-78mm in 35mm format. This lens offers an f/2.8 maximum aperture throughout the entire zoom range, to ensure stress-free photographic shots at all focal lengths and distances.
Canon TS-E 24mm F 3.5L high-precision glass molded aspherical and UD glass lens elements and accurate aspherical GMo along with a large diameter. It delivers outstanding image quality, high resolution and super-low distortion to all edges of the image. The lens incorporates a new type of anti-reflection coating, Canon’s SubWavelength structure Coating (SWC) that continuously changes the refractive index on the lens surface via wedge-shaped structures more minute than wavelength of visible light.