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 Canon EF-S 18-55mm F3.5-5.6 IS AF speed and accuracy is actually pretty good and the noise level during operations remains on a very low level. According to Canon the newly developed Image Stabilization system of Canon EF-S 18-55mm F3.5-5.6 IS is good enough for a “gain” equivalent to up to 4 f-stops.
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.
The Canon EF 200mm F 2.8L is a very good to excellent lens in all optical and mechanical aspects. As to be expected the performance decreases when combining the lens with a Canon EF 1.4x II converters but generally the results remain very good here.