Canon EF 50mm f/1.4 USM vs. Canon EF 50mm f/1.8 STM

50mm lens

Famous in the photographic community for impressive shooting and excellent image quality in low light situations are two of Canon’s prime lenses: Canon EF 50mm f/1.4 USM and Canon EF 50 mm f/1.8 STM.


Because of their wide aperture, these small and light powerhouses deliver hi-res images of isolated subjects with a blurry background, or what photographers refer to as bokeh. Bokeh is used to emphasize the subject of a photograph that is usually applied on portraits. If you’re into this line of photography, either of these two lenses should be present in your camera bag.




Both lenses exhibit excellent quality and image sharpness at f/8. The main advantage of Canon EF 50 f/1.4 USM over the EF 50 mm f/1.8 STM lies in its ultrasonic motor, which makes autofocusing faster. The EF 50 mm f/1.8 STM is a tad slower but with its STM, it is great for video recording.


With regards to weight and size, the Canon EF 50 f/1.4 USM is larger and heavier than the Canon EF 50mm f/1.8 STM. Both have metal lens mounts with the Canon EF 50mm f/1.8 STM notably improving from the plastic material of its predecessor (Canon EF 50mm f/1.8 II).


Perhaps the deciding factor is the price gap between the two. Priced at PhP 19,998 as of posting, the Canon EF 50 mm f/1.4 USM is almost thrice the amount of Canon EF 50mm f/1.8 STM, which costs PhP 6,998 as of posting.


Considering all specifications, the choice becomes dependent on the buyer’s priority. If price is a factor, go for the Canon EF 50 mm f/1.8 STM. If you want faster focusing, then the Canon EF 50mm f/1.4 USM is the lens for you.


With their excellent image quality, low light shooting performance, bokeh capturing ability, affordable market price, and light body, these two prime lenses land secure spots in Canon’s all-time bestseller list.


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