Top Tier (Best Image Quality, Pricey):
* Sigma 50mm f/1.4 DG HSM Art: Widely regarded as one of the sharpest 50mm lenses ever made, it has fantastic image quality, beautiful bokeh, and excellent build quality. It's available for various camera mounts (Canon EF, Nikon F, Sony E/FE, Leica L). *Note:* Can be a bit heavy.
* Sony FE 50mm f/1.2 GM (For Sony E/FE Mount): This is the flagship 50mm from Sony. Incredibly sharp, stunning bokeh, excellent autofocus, and weather-sealed. The f/1.2 aperture allows for extremely shallow depth of field and exceptional low-light performance. *Note:* Very expensive.
* Nikon Nikkor Z 50mm f/1.2 S (For Nikon Z Mount): Nikon's top-of-the-line 50mm for their mirrorless system. Offers similar benefits to the Sony f/1.2, including exceptional sharpness, beautiful bokeh, and fast autofocus. *Note:* Expensive.
Mid-Range (Excellent Quality, More Affordable):
* Sony FE 55mm f/1.8 ZA (For Sony E/FE Mount): Slightly longer focal length, but still considered a fantastic portrait lens on a full-frame Sony. Sharp, compact, and delivers beautiful images. A good balance of price and performance.
* Canon EF 50mm f/1.4 USM (For Canon EF Mount): A classic lens with good image quality, a reasonable price, and a pleasing bokeh. While not as sharp as newer options, it offers a "character" that some photographers appreciate.
* Nikon AF-S Nikkor 50mm f/1.4G (For Nikon F Mount): Similar to the Canon f/1.4, this Nikon lens delivers good image quality and pleasing bokeh at a reasonable price point.
* Viltrox AF 50mm f/1.8: Viltrox is making a name for themselves as a manufacturer of budget-friendly lenses, and their 50mm f/1.8 is excellent value.
Budget-Friendly (Great Value for Money):
* Canon EF 50mm f/1.8 STM (For Canon EF Mount): An incredibly affordable and popular lens. It's sharp, lightweight, and produces decent bokeh. An excellent starting point.
* Nikon AF-S Nikkor 50mm f/1.8G (For Nikon F Mount): Similar to the Canon f/1.8, this Nikon lens is a fantastic value. Sharp, lightweight, and offers good image quality.
* Yongnuo 50mm f/1.8: Available for Canon, Nikon, and Sony. Yongnuo lenses are known for their very low price. Image quality isn't as stellar as the brand names, but if you're on a tight budget, it's a viable option.
Key Considerations When Choosing:
* Aperture (f-stop): A wider aperture (lower f-number, like f/1.4 or f/1.2) allows for shallower depth of field (more background blur, or "bokeh"), which is desirable for portraits. It also gathers more light, improving low-light performance.
* Sharpness: While sharpness is important, it's not everything for portraits. A lens that's *too* sharp can accentuate skin imperfections. Many photographers prefer a lens with a balance of sharpness and a pleasing rendering of skin tones.
* Bokeh Quality: The quality of the background blur is crucial. Some lenses produce smooth, creamy bokeh, while others can create distracting or harsh bokeh.
* Autofocus: Fast and accurate autofocus is important, especially when shooting portraits of moving subjects.
* Build Quality: A well-built lens will last longer and feel more comfortable to use.
* Budget: Set a realistic budget and choose the best lens you can afford within that range.
* Camera Mount: Make sure the lens you choose is compatible with your camera's mount (e.g., Canon EF, Nikon F, Sony E/FE, Fujifilm X).
* Image Stabilization (IS/VR/OSS): While not essential for a 50mm lens, image stabilization can be helpful in low-light situations or when shooting handheld video. However, for portraits, your subject needs to be still, so you're often using faster shutter speeds anyway.
Recommendations Based on Common Scenarios:
* Best Overall (Price No Object): Sony FE 50mm f/1.2 GM or Nikon Nikkor Z 50mm f/1.2 S (depending on your camera system). These are top-of-the-line lenses with unmatched performance.
* Best Balance of Price and Performance: Sony FE 55mm f/1.8 ZA (for Sony E/FE) or Sigma 50mm f/1.4 DG HSM Art (for other mounts).
* Best Budget Option: Canon EF 50mm f/1.8 STM or Nikon AF-S Nikkor 50mm f/1.8G. These are excellent lenses for beginners and budget-conscious photographers.
Before you buy, consider:
* Read reviews: Check out reviews from reputable sources like DPReview, Photography Life, and Lensrentals.
* Rent a lens: If possible, rent a lens before you buy it to see if you like it. Lensrentals.com is a good option.
* Look at sample photos: Search for sample photos taken with the lens you're considering to get an idea of its image quality and bokeh.
Ultimately, the best 50mm lens for you depends on your specific needs and preferences. Good luck with your choice!