Canon EF 50mm f/1.8 STM Lens 0570C002

Fixed 50 mm f/1.8 prime for Canon EOS

The Canon EF 50mm f/1.8 STM is a compact, lightweight fixed focal length lens built for Canon EOS cameras. Its large f/1.8 maximum aperture makes it well suited to low-light photography and creative background blur. The stepping motor provides near-silent continuous autofocus during movie recording and smooth focus for stills. Photographers wanting a versatile everyday prime will find it a practical choice.

Stepping motor sustains quiet continuous focus

The STM drive delivers near-silent, continuous Servo AF for video and smooth autofocus for stills without the hunting common in louder micromotor designs. Focus adjustment remains AF with full-time manual override, so precise corrections are possible at any point. The six-element, five-group construction maintains consistent optical performance across the focus range. Extended shooting sessions benefit from the motor's low heat output and steady response.

49 mm filter thread decides accessory fit

The lens accepts 49 mm screw-in filters, a diameter that determines which circular polarisers, neutral density filters or protective glass can be used directly. This thread size also governs compatibility with many third-party hoods and adapter rings. Buyers who need a larger filter diameter for existing filter sets or specialised optics will need a different lens or step-up rings. The 49 mm specification is the single constraint that defines accessory compatibility.