What is the difference between canon ef and ef-s lenses?

Answer Canon produces a wide range of camera lenses that can be used with the single-lens reflex (SLR) cameras that it creates. Each camera lens has a designated mount type.TypesEF and EF-S are two mount ... Read More »

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What is the difference between lenses on the Canon Rebel XTi?

The Canon Rebel XTi is a digital SLR (single-lens reflex), which means it has the ability to change lenses. The camera lenses have a variety of features that makes certain lenses more effective for... Read More »

What is the Difference Between Digital Lenses&Analog Lenses?

Digital lenses are generally shorter and smaller in diameter than analog lenses. This is because the electronic image sensor in a digital camera is very small and the lens needs to be smaller to fo... Read More »

Basic Canon camera question: What is the difference between the D numbers on Canon cameras?

Have you ever visited the Canon website and looked at the features of each Canon dSLR?You of course know that the "D" is the indication that the camera is a digital cameraIf you also look hard, you... Read More »

What Is the Difference Between Progressive Lenses & Bifocals?

Although bifocals and progressive lenses both help with reading and close work, these similar but different types of glasses lenses work differently.