Top Choices (Regardless of Budget - If You Want the Best):
* Sigma 50mm f/1.4 DG DN Art: Considered by many to be the absolute best 50mm, delivering exceptional sharpness, beautiful bokeh, and robust build quality. It's available for Sony E-mount and L-mount. It is a larger and heavier lens, but worth it for the image quality.
* Sony FE 50mm f/1.2 GM: For Sony E-mount users, this is a top-tier option. Its incredibly wide aperture allows for shallow depth of field and stunning bokeh. It's known for its sharpness even wide open and fast autofocus. This is one of the most expensive 50mm lenses.
* Nikon Nikkor Z 50mm f/1.2 S: Nikon's equivalent of the Sony f/1.2 GM, designed specifically for their Z mirrorless system. It offers similar benefits – exceptional sharpness, creamy bokeh, and top-notch build quality. It's also a premium-priced lens.
High-End Options (Excellent Performance, High Price):
* Canon RF 50mm f/1.2L USM: Canon's high-end 50mm for their RF mount mirrorless cameras. Offers incredible image quality, stunning bokeh, and fast, accurate autofocus.
* Sony FE 50mm f/1.4 GM: A newer, more compact, and less expensive alternative to the f/1.2 GM. While not *quite* as extreme in its bokeh, it still offers exceptional image quality and performance.
* Voigtlander Nokton 50mm f/1.2 Aspherical: Manual focus only, but highly regarded for its unique rendering, sharpness, and character. Excellent for those who enjoy manual control and want a distinctive look. Available in various mounts (e.g., Sony E, Nikon Z).
Mid-Range Options (Excellent Value and Performance):
* Sony FE 50mm f/1.8: A compact and affordable option for Sony E-mount. Good sharpness and pleasing bokeh for the price. Autofocus isn't the fastest, but it's a great entry-level 50mm for Sony.
* Nikon Nikkor Z 50mm f/1.8 S: A great option for Nikon Z mount cameras, offering excellent sharpness, fast autofocus, and a reasonable price. A noticeable step up from older Nikon 50mm f/1.8 lenses.
* Canon RF 50mm f/1.8 STM: Canon's budget-friendly option for their RF mount. Sharp, lightweight, and affordable. Good value for beginners or those on a tight budget.
* Fujifilm XF 50mm f/2 R WR: A compact, weather-resistant 50mm equivalent (75mm on Fujifilm's APS-C sensors) that's known for its sharp images and fast autofocus.
Budget-Friendly Options (Great for Starting Out):
* Canon EF 50mm f/1.8 STM (for Canon DSLRs): An incredibly popular and affordable lens. Sharp, lightweight, and provides a shallow depth of field. Autofocus is decent. Requires an adapter for Canon EOS-M mirrorless cameras, and is not native to RF mount.
* Nikon AF-S Nikkor 50mm f/1.8G (for Nikon DSLRs): Similar to the Canon 50mm f/1.8 STM, this is a great budget option for Nikon DSLR shooters. Provides good image quality and bokeh for the price.
* Yongnuo 50mm f/1.8 (for various mounts): A very inexpensive option, but image quality and build quality may not be as high as the brand-name lenses. A good choice if you're on an extremely tight budget and just want to experiment with a 50mm lens.
Key Factors to Consider:
* Aperture: A wider aperture (e.g., f/1.2, f/1.4, f/1.8) allows for shallower depth of field (more background blur, also known as bokeh) and better performance in low light. However, wider apertures generally mean higher prices.
* Sharpness: A sharp lens will capture more detail in your portraits. Look for lenses that are known for their sharpness, especially at wider apertures.
* Bokeh: The quality of the background blur is important for portraits. Look for lenses that produce smooth, creamy bokeh.
* Autofocus: Fast and accurate autofocus is important for capturing sharp portraits, especially of moving subjects.
* Build Quality: A well-built lens will be more durable and last longer.
* Price: Set a budget and stick to it. There are excellent 50mm lenses available at a range of price points.
* Mount: Ensure the lens is compatible with your camera's lens mount (e.g., Canon EF, Canon RF, Nikon F, Nikon Z, Sony E, Fujifilm X, Micro Four Thirds).
* Manual Focus: If you are comfortable with manual focus, you can find some excellent vintage or specialty 50mm lenses at lower prices.
* Size and Weight: Consider the size and weight of the lens, especially if you plan to carry it around for long periods. The Sigma 50mm f/1.4 DG DN Art is large and heavy.
Recommendations Based on Common Needs:
* Best Overall (High Budget): Sigma 50mm f/1.4 DG DN Art (Sony E/L-mount), Sony FE 50mm f/1.2 GM (Sony E), Nikon Nikkor Z 50mm f/1.2 S (Nikon Z)
* Best Value (Mid-Range Budget): Sony FE 50mm f/1.8 (Sony E), Nikon Nikkor Z 50mm f/1.8 S (Nikon Z), Canon RF 50mm f/1.8 STM (Canon RF)
* Best Budget Option: Canon EF 50mm f/1.8 STM (Canon EF DSLRs), Nikon AF-S Nikkor 50mm f/1.8G (Nikon DSLRs)
* For Sony E-mount: Sony FE 50mm f/1.2 GM (best), Sony FE 50mm f/1.4 GM (excellent), Sigma 50mm f/1.4 DG DN Art (excellent), Sony FE 50mm f/1.8 (value)
* For Nikon Z-mount: Nikon Nikkor Z 50mm f/1.2 S (best), Nikon Nikkor Z 50mm f/1.8 S (value)
* For Canon RF-mount: Canon RF 50mm f/1.2L USM (best), Canon RF 50mm f/1.8 STM (value)
* For Fujifilm X-mount: Fujifilm XF 50mm f/2 R WR
Final Advice:
* Read reviews: Before buying any lens, read reviews from reputable sources (e.g., DPReview, LensRentals, Photography Life).
* Rent before you buy: If possible, rent the lens you're considering to try it out with your own camera and shooting style.
* Consider your needs: Think about the types of portraits you plan to shoot and the features that are most important to you.
Ultimately, the best 50mm lens for portraits is the one that best suits your individual needs and preferences. Good luck!