Budget-Friendly Options (Under $300):
* Canon EF 50mm f/1.8 STM (For Canon EF/EF-S): The classic "nifty fifty." Pros: Affordable, lightweight, decent image quality, good for beginners. Cons: Plastic build, noisy autofocus, some chromatic aberration, bokeh isn't the smoothest.
* Nikon AF-S NIKKOR 50mm f/1.8G (For Nikon F): Similar to the Canon f/1.8. Pros: Affordable, sharper than older Nikon 50mm f/1.8D, lightweight, improved autofocus over older versions. Cons: Plastic build, bokeh isn't the creamiest.
* Sony FE 50mm f/1.8 (For Sony E): A relatively inexpensive option for Sony full-frame cameras. Pros: Small and lightweight, decent image quality for the price. Cons: Slow and noisy autofocus, some distortion.
* Yongnuo 50mm f/1.8 (Various mounts): An extremely budget-friendly option. Pros: Dirt cheap. Cons: Inconsistent build quality, slower and less accurate autofocus, image quality can vary. Consider this only if budget is extremely tight.
Mid-Range Options ($300 - $800):
* Sigma 50mm f/1.4 DG HSM Art (Various mounts): A popular third-party lens known for its sharpness and image quality. Pros: Sharp, beautiful bokeh, solid build quality. Cons: Larger and heavier than f/1.8 versions, can have some autofocus calibration issues on some cameras.
* Sony FE 50mm f/2.5 G (For Sony E): A very compact and lightweight lens that offers good image quality. Pros: Compact, lightweight, sharp, good build quality. Cons: Not as bright as f/1.8 or f/1.4 options.
* Canon RF 50mm f/1.8 STM (For Canon RF - Mirrorless): An updated version of the EF 50mm f/1.8, designed specifically for Canon's mirrorless cameras. Pros: Improved image quality, faster autofocus, and more compact design compared to the EF version. Cons: Still has a plastic build and the bokeh may not be as smooth as more expensive lenses.
* Nikon NIKKOR Z 50mm f/1.8 S (For Nikon Z - Mirrorless): Designed for Nikon's mirrorless system, offering excellent sharpness and image quality. Pros: Sharp images, fast autofocus, and well-built. Cons: More expensive than the F mount version.
High-End Options (Over $800):
* Sony FE 50mm f/1.2 GM (For Sony E): Top-of-the-line. Pros: Extremely sharp, incredibly creamy bokeh, excellent autofocus, professional build quality. Cons: Very expensive, large and heavy.
* Canon RF 50mm f/1.2L USM (For Canon RF): Canon's top-tier 50mm for their RF mount. Pros: Exceptional image quality, beautiful bokeh, fast autofocus, weather-sealed. Cons: Expensive, large, and heavy.
* Nikon NIKKOR Z 50mm f/1.2 S (For Nikon Z): Nikon's flagship 50mm for Z mount. Pros: Outstanding sharpness, gorgeous bokeh, superb build quality. Cons: Very expensive, bulky.
* Voigtlander Nokton 50mm f/1.2 Aspherical (Various mounts): Manual focus lens known for its unique character and rendering. Pros: Exceptional image quality, beautiful bokeh, unique look. Cons: Manual focus only, requires practice to nail focus.
* Leica Summilux-M 50mm f/1.4 ASPH (For Leica M): The legend. Pros: Incredible image quality, excellent contrast, compact size (for the speed), smooth manual focus. Cons: Very expensive, manual focus only, requires a Leica M camera or adapter.
Factors to Consider When Choosing:
* Aperture (f-stop): A lower f-number (e.g., f/1.4, f/1.2) allows more light in, useful in low light, and creates shallower depth of field (more background blur - bokeh). F/1.8 is a great balance of price and performance for most portrait shooters.
* Autofocus: Consider autofocus speed and accuracy, especially if you're shooting moving subjects. If you like to manual focus, don't worry about autofocus.
* Sharpness: While sharpness is important, it's not everything in portraiture. Sometimes a slightly softer lens can be more flattering.
* Bokeh: The quality of the out-of-focus areas. Look for lenses that create smooth, creamy bokeh with minimal harshness.
* Build Quality: A metal build feels more durable and professional.
* Lens Mount: Make sure the lens is compatible with your camera body.
* Size and Weight: Consider how comfortable the lens is to carry and use for extended periods.
* Budget: Be realistic about how much you can spend. You can get excellent results even with budget-friendly options.
* Used Market: Buying used can save you a lot of money on excellent lenses.
Recommendations:
* For Beginners on a Budget: Canon EF 50mm f/1.8 STM or Nikon AF-S NIKKOR 50mm f/1.8G.
* For a Balance of Price and Performance: Sigma 50mm f/1.4 DG HSM Art, Nikon NIKKOR Z 50mm f/1.8 S, or Canon RF 50mm f/1.8 STM.
* For Ultimate Image Quality and Bokeh (Budget No Object): Sony FE 50mm f/1.2 GM, Canon RF 50mm f/1.2L USM, or Nikon NIKKOR Z 50mm f/1.2 S.
* For a Unique Look and Manual Focus Enthusiasts: Voigtlander Nokton 50mm f/1.2 Aspherical.
Ultimately, the best way to choose a lens is to try them out if possible. Rent a couple of different options and see which one you prefer. Read reviews, look at sample photos, and consider your own shooting style and needs. Good luck!