What does EF stand for Canon?

What does EF stand for Canon?

A lens mount is the standard or pattern that is used to connect the lens to the camera. Canon uses a standard lens mount called EF. EF lenses were introduced in 1987 for Canon SLR cameras, and EF stands for “Electro-Focus” because it has a built-in motor in the lens for automatic focusing.

What is the difference between EF and EF S?

Put simply, Canon EF-S lenses are designed solely for use on Canon APS-C DSLRs. Canon EF lenses are designed to work with full frame and APS-C DSLRs from Canon. Canon EF-S lenses have a smaller image circle that is only big enough to cover the smaller sensor found on Canon APS-C cameras.

What does STM stand for Canon?

When you see a Canon lens with STM in the name, it means that it features Canon's Stepper Motor technology. Canon introduced this motor design to be a quieter and smoother focus system that allows for near-silent focusing during video recording.

Is 18 135mm a good lens?

The EF-S 18-135mm f/3.5-5.6 IS USM Lens is attractive on many fronts, including its wide (7.5x) focal length range, its relatively small size and light weight, its fast, smooth and accurate autofocusing, its great functionality including image stabilization and its modest price.

Do EF lenses fit on EF S cameras?

1 Answer. The short answer to your question is yes, an EF lens can be used on a crop-sensor (EF-S) Canon camera. … Some of the EF-S lenses protrude into the body and so for full frame cameras that would cause the mirror to come into contact and get damaged, but even if they do not, they can't be used.

IS STM vs IS II?

In general STM lenses have quieter and smoother focus than their non-STM counterparts, especially compared to USM lenses. … In the case of the EF-S 18-55mm f/3.5-5.6 IS II and the EF-S 18-55mm f/3.5-5.6 STM though, the STM is also slightly faster to focus than the older IS II.

What are telephoto lenses good for?

Telephoto Lenses. A telephoto lens is one designed for photographing distant subjects like wildlife and sports events. They are also used in portrait photography. A telephoto lens is a type of camera lens designed for taking photographs of subjects at moderate to far distances.

What is a prime lens in photography?

In film and photography, a prime lens is a fixed focal length photographic lens (as opposed to a zoom lens), typically with a maximum aperture from f2.8 to f1.2.

Is Canon 18 135 A wide angle lens?

Compact wide-to-tele zoom is designed for APS-C-format Canon EF-S-mount DSLRs, and offers a 28.8-216mm equivalent focal length range. One ultra-low dispersion element reduces color fringing and chromatic aberrations for high clarity and color fidelity.

What is Nano USM?

Nano USM is a compact ultrasonic motor that achieves high-speed AF. It first appeared in 2016 in the EF-S18-135mm f/3.5-5.6 IS USM. … Capable of driving the focus unit at high speed and stopping it with precision, the Nano USM enables high-speed autofocus for still images.

What does USM mean in text?

USM. Unstoppable Sex Machine (band) USM.

What is Canon RF lenses?

The modification amplifies and spreads with stator metal, and generates a traveling wave on the surface of stator metal. Here, the stator metal touches the rotor only at each peak of a traveling wave, and each of that peak carries out elliptical movement.

What does macro lens mean?

A macro lens is a camera lens designed for photographing small subjects at very close distances. They can focus much nearer than normal lenses, allowing you to fill the frame with your subject and capture more detail.

How do I know what kind of Canon camera I have?

The serial number on an EOS-1D Mark IV camera is situated on the camera's base plate (bottom). The serial number is usually in white numbers on the camera's base plate. Canon's tilt and shift (or TS-E) lenses have their serial numbers on the side of the lens barrel near to lens' electronic mount.