Sigma 40Mm 1.4 Vs 50Mm 1.4: Which One Should You Choose?


When it comes to photography, choosing the right lens is crucial. It can make or break your photos. Two popular lenses in the market are the Sigma 40mm 1.4 and the 50mm 1.4. Both are great options, but which one is right for you? In this article, we’ll compare the Sigma 40mm 1.4 vs 50mm 1.4 and help you make an informed decision.

Focal Length

The Sigma 40mm 1.4 and the 50mm 1.4 have different focal lengths. The 40mm is slightly wider, while the 50mm is a more traditional portrait lens. The wider focal length of the 40mm makes it great for capturing landscapes, street photography, and environmental portraits. On the other hand, the 50mm is ideal for portraits, weddings, and events.


Both lenses have a maximum aperture of 1.4, which means they can produce beautiful bokeh and allow you to shoot in low light conditions. However, the Sigma 40mm 1.4 has a larger aperture diameter, which means it can let in more light than the 50mm 1.4. This makes it a better option for low light photography.

Image Quality

When it comes to image quality, both lenses are exceptional. The Sigma 40mm 1.4 has excellent sharpness and produces beautiful colors. It also has minimal distortion and vignetting. The 50mm 1.4 is also sharp and produces great colors. However, it has some distortion and vignetting, which can easily be corrected in post-processing.


Both lenses have fast and accurate autofocus systems. However, the Sigma 40mm 1.4 has a newer autofocus motor, which makes it slightly faster and quieter than the 50mm 1.4.

Size and Weight

The Sigma 40mm 1.4 is slightly larger and heavier than the 50mm 1.4. However, the size and weight difference is negligible, and both lenses are still lightweight and easy to carry around.


The Sigma 40mm 1.4 is more expensive than the 50mm 1.4. However, the price difference is not significant, and both lenses are reasonably priced.


So, which one should you choose? It ultimately depends on your needs and style of photography. If you’re into landscape, street, or environmental portrait photography, then the Sigma 40mm 1.4 is a great option. On the other hand, if you’re into portraits, weddings, and events, then the 50mm 1.4 is the way to go. Both lenses have excellent image quality, autofocus, and low light capabilities, making them great options for any photographer.

Pros and Cons of Sigma 40mm 1.4


  • Wider focal length
  • Fast and accurate autofocus
  • Excellent sharpness
  • Minimal distortion and vignetting
  • Large aperture diameter


  • More expensive than the 50mm 1.4
  • Slightly larger and heavier than the 50mm 1.4

Pros and Cons of Sigma 50mm 1.4


  • Traditional portrait lens
  • Reasonably priced
  • Great for portraits, weddings, and events
  • Fast and accurate autofocus
  • Produces great colors


  • Some distortion and vignetting
  • Slightly slower aperture diameter than the 40mm 1.4

Tips for Choosing the Right Lens

Choosing the right lens can be overwhelming, especially with so many options available in the market. Here are some tips to help you choose the right lens for your needs:

  • Determine your style of photography
  • Consider the focal length
  • Look for lenses with a wide aperture
  • Consider the size and weight of the lens
  • Read reviews and do research


In conclusion, the Sigma 40mm 1.4 vs 50mm 1.4 debate is a tough one. Both lenses are great options, and the decision ultimately comes down to your needs and style of photography. So, determine your style of photography, consider the pros and cons of each lens, and choose the one that suits you best. Happy shooting!