From the Manufacturer: Broaden your perspective with the Canon EF 17-40mm ultra-wide-angle zoom lens. Ideal for both film and digital SLR cameras, the lens offers three aspherical lens elements in addition to a Super UD (ultra-low dispersion) glass element, creating superior optics in all conditions.
The EF-S 55-250mm f/4-5.6 IS STM is an 88-400mm-equivalent zoom for Canon APS-C DSLRs. This lens's long reach is enhanced by the inclusion of an Ultra-Low Dispersion element, which helps to greatly reduce color fringing and chromatic aberrations for greater clarity and color accuracy throughout the zoom range. A Super Spectra coating is also featured, and minimizes flare and ghosting in order to produce greater contrast when working in bright lighting conditions. Benefitting both photo and video applications, an STM stepping AF motor is used to realize quick and near-silent autofocus performan... [Read More]
Optics close-up lenses are for quick and easy close-up photography. The close-up lens is screwed on to the front of a lens like a filter, In this case a stepping ring will allow a larger
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