Product Comparison: Canon EF 50mm f/1.4 USM vs Canon EF 50mm f/1.8 STM

Advertiser Disclosure

This site is a free online resource that strives to offer helpful content and comparison features to its visitors. Please be advised that the operator of this site accepts advertising compensation from certain companies that appear on the site, and such compensation impacts the location and order in which the companies (and/or their products) are presented, and in some cases may also impact the scoring that is assigned to them. The scoring that appears on this site is determined by the site operator in its sole discretion, and should NOT be relied upon for accuracy purposes. In fact, Company/product listings on this page DO NOT imply endorsement by the site operator. Except as expressly set forth in our Terms of Use, all representations and warranties regarding the information presented on this page are disclaimed. The information which appears on this site is subject to change at any time. More info

General Specifications
EF 50mm f/1.4 USM
EF 50mm f/1.8 STM
About the Product
It’s often said that a face can tell a thousand stories. And the real beauty of portrait photography is that every shot is as individual as the person in it. Capturing a face can be one of the most satisfying and rewarding types of photography. And, with a good lens and the right technique, it’s easy to get the results you want.
An affordable, high quality lens that's perfect for creative portraits and low-light photos. Blur backgrounds to make your subject stand out, and enjoy smooth near-silent STM focusing when shooting movies.
Key Specs
Mount Type
Canon EF
Canon EF
Maximum Aperture
1.4 /f
1.8 /f
Minimum Focal Length
50 millimeters
50 millimeters
Maximum Focal Length
50 millimeters
50 millimeters
Lens Type
What customers say about "Key Specs"
Canon EF 50mm f/1.4 USM Lens for Canon DSLRs
  • Another reason that I preferred this lens was the metal mount, though I believe the f/1.8 II transitioned to a metal mount as well.
  • The mounting is plastic and the front focus ring feels like an after thought.
  • Additionally, it doesn't really have a good mount for a hood. Finally, the focus ring is very touchy - the full motion of the focus is only about a quarter of a turn, so you have very little room for fine tuning.
  • Beyond the angle of view though, it's most commendable quality is the super-bright f1.4 aperture.
  • Really though, I think the number one reason that I love this lens is because it is such a versatile focal length with a fast aperture, and great performance in low light.
Canon EF 50mm f/1.8 STM Canon DSLR Lens
  • The lens now has a metal mount, which gives it an all better look and a bit more sturdiness in the hand.
  • Now the mount it metal where before it was plastic like the rest of the lens.
  • The focus ring is a actually usable for people without hobbit hands and the back has a metal mount. The build quality makes it look like a professional lens too so no more walking around embarrassed at the sight of expensive DSLR with a plasticy lens on.
  • Metal mount makes this feel more solid and less fragile.
Size & Weight
2.9 in.
2.7 in.
2.9 in.
2.7 in.
2 in.
1.6 in.
10.2 oz.
5.7 oz.
What customers say about "Size & Weight"
Canon EF 50mm f/1.4 USM Lens for Canon DSLRs
  • Well-built. It's a fairly small lens that has tight tolerances and an appropriate weight for the size.
  • It is just the right size and weight. Most lenses are just too big, bulky, and heavy for general purpose use.
  • The lens has more weight and has a real hood attachment, and photos just come out better than the f/1.8 - better focus and more saturation and contrast.
  • First off this lens is amazingly solid (makes the plastic kit lens feel like a toy). I swear it doubles the weight of my camera (not in a bad way)... I now understand the reviews which said that the T2i feels cheap.
  • It has some weight to it, so it feels like great quality.
Canon EF 50mm f/1.8 STM Canon DSLR Lens
  • On the rear of the lens we now have a metallic mount, something I’m so glad to see. Moving up from the plastic mount has increased it’s weight slightly, but also hugely increases the longevity of this lens.
  • The lens is not so large that it would bother anyone & the weight is just right in my opinion.
  • It is so easy to run around with and shoot great photos Light-weight, fast focus, and good for low-light situations.
  • You can not get a better value for this price range, solid feeling, not to plastic feel but it is a bit on the lighter side feels looks like it should feel heavier but still a good enough weight to feel like it is solid.
  • This lens is light weight, super sharp, and has amazing bokeh.
Minimum Focus Distance
17.7 in.
13.78 in.
Field Of View
Zoom Type
Auto Focus, Manual Focus
Auto Focus, Manual Focus
Optical Stabilization
What customers say about "Imaging"
Canon EF 50mm f/1.4 USM Lens for Canon DSLRs
  • The focus and recompose method will not suffice most of the time. If you've have microadjust, put that to use.
  • It doesn't zoom, it just does bokeh and does it well. Sharp enough for my general purpose.
  • It's not a zoom lens so get ready to move those feet :) This is a very nice prime lens and if you are a beginner like me, this lens should definitely be in your collection.
  • Though technically not a macro lens since the minimum focal length is 18 inches, you can still achieve some very nice close-up images.
  • Crisp focus with zero adjustment needed and AI servo through 10 frame run and all spot on in focus.
Canon EF 50mm f/1.8 STM Canon DSLR Lens
  • Manual focus also works nicely but you have to switch it to MF on the lens only then will it work.
  • The Auto-Focus is fairly quick. Of course there is quicker out there but not at this price point. The image quality is clear. The lens is not so large that it would bother anyone & the weight is just right in my opinion.
  • This is a great lens. It is so easy to run around with and shoot great photos Light-weight, fast focus, and good for low-light situations.
  • The only thing I wish it had is the depth of field gauge so I can set it up for zone focus in manual mode.
  • Auto focus is a little noisy, no problem for photos... But for video don't plan on using any audio from the camera or a mic on the hot shoe mount...
Brand Compatibility
Sensor Type Compatibility
FX Format / DX Format
Lens Groups and Elements
7 Elements in 6 Groups
6 Elements in 5 Groups
Number of Aperture Blades
Filter Diameter
58 millimeters
49 millimeters
Ultrasonic autofocus motor (USM), The ultimate mixture of versatility and image quality, Super Spectra coating, Smooth background blur
Redeveloped physical design, An STM stepping AF motor realizes smooth, near-silent autofocus
What customers say about "Features"
Canon EF 50mm f/1.4 USM Lens for Canon DSLRs
  • Great product. If you are rocking a cropped sensor also consider the 35mm f/2. Both great for the money, the 35mm on the cropped sensor will look a lot like this lens on a full.
  • This lens is a lot of fun to play around with. It takes excellent pictures and the 1.4 aperture creates jaw-dropping pictures in dark scenarios. For an amateur photographer, this is a really cool feature.
  • The prime focus is very very sharp. I think that is my favorite feature about the lens.
  • Now the canon 50mm 1.4 I bought brand new in amazon some time ago and take very special care with because I know the USM motor is very sensitive and gets damaged with any little bump and if you twist to hard on a filter you can damage as well .
  • The front element is recessed well and serves like a hood. Fully focused to infinity, the front barrel is completely flush. However, if you add on a filter, that filter ring will jutt out a little. I happened to have dropped the lens once on the filter.
Canon EF 50mm f/1.8 STM Canon DSLR Lens
  • Plus the STM motor is much quieter than the previous generation lens.
  • Focus is achieved by front element extension (nested barrel. The STM motor is quieter than the prior model, albeit not completely silent.
  • Again the STM is a bit loud and the focus a bit slow but for the price and the quality of this lens, it is completely justifiable.
  • I love the soft whirl of a defocused background, and this seven-blade diaphragm does not disappoint, rendering smooth bokeh and pleasantly round specular highlights.
  • Only downside I might say is that the focus ring doesn't directly adjust the focal elements, its more of a slightly delayed electronic feel - however, that is what STM means, I just didn't know that.
Warranty / Certifications
Manufacturer Warranty
1 year(s)
1 year(s)
Other Information
125.99 $

Other reviews