What is the difference between IS and STM lens?
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 does EF stand for Canon?
Electro-FocusThe EF lens mount is the standard lens mount on the Canon EOS family of SLR film and digital cameras. EF stands for “Electro-Focus”: automatic focusing on EF lenses is handled by a dedicated electric motor built into the lens.
What is difference between USM and STM lens?
USM stands for Ultrasonic Motor, while STM stands for Stepper Motor. Both are autofocus motors built into different lenses you’ll find in Canon’s lineup. … By comparison, the STM lenses really are almost silent, as they were built with video in mind — rodents need not apply.
Which is better lens STM or USM?
Conclusion. USM lenses are more professional-grade and better for shooting photos, while STM lenses are geared more towards amateurs and better for video. The STM lenses really are almost silent, as they were built with video in mind.
What does the IS stand for in Canon lenses?
Image StabilizerIS stands for Image Stabilizer. A lens with IS in its title has some form of image stabilisation built into it. Canon lenses do not offer image stabilisation for images as standard in their bodies – although they are starting to offer digital image stabilisation for video – so this is a desirable feature.
WHAT IS STM?
A scanning tunneling microscope (STM) is a device that obtains images of the atoms on the surfaces of materials. … The STM has applications in molecular science, also known as nanotechnology. It can be used to move atoms individually, as well as to generate high-resolution maps of material surfaces.
What does STM stand for Canon?
Stepper Motor technologyWhen 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 USM a lens?
If you notice your Canon digital SLR camera lens has the letters USM written on the side, it means the lens has a small motor built into the body. Hence, USM is short for Ultra Sonic Motor. … While these cheaper versions are quieter, they don’t however focus as quickly as a true ring ultrasonic lens.
Why are USM lenses more expensive?
With Canon lenses, the more expensive telephoto zoom includes the letters “L,” “IS,” and “USM,” while the less expensive lens doesn’t. … “USM” signifies the lens has an UltraSonic Motor for autofocus. That means AF is faster and quieter then the less expensive lens, which uses a conventional motor.