This item: MasterPieces Collegiate Kentucky Wildcats 1000 Piece Stadium (Basketball) Panoramic Jigsaw Puzzle $14.00 In Stock. Ships from and sold by Amazon.com.
1 EF-S lenses feature a protective pin that stops these lenses from being mounted on a full-frame EOS camera.  EF-M â a new lens format specifically designed for the Canon EOS M mirrorless camera system with EF-M mount. Just like the EF-S lenses, EF-M are designed for APS-C sensor cameras.
Aperture, therefore, is just a relative measure for the diameter of your lens opening. Lower f-numbers indicate a wider aperture, with f/2.8 and below being the extremes, while higher ones signify that more light is being blocked. One side effect of a wide-open lens is that it lets in a lot of unfocused light rays.