50mm Lens for Portrait Photography:
Pros:
* Versatility: The 50mm is a very versatile lens. It can be used for portraits, but also for street photography, landscapes, and general photography. This makes it a great "walk-around" lens.
* More Environment: It captures more of the surrounding environment, which can be great for environmental portraits that tell a story or provide context.
* Cost-Effective: Generally, a good quality 50mm lens (especially a f/1.8) is relatively inexpensive compared to an 85mm.
* Close-Up Shots: You can get closer to your subject without distorting their features too much. This allows for more intimate portraits.
* Easier in Tight Spaces: The wider angle means you can work in smaller rooms or studios without feeling cramped.
* Easier to Compose: Some find it easier to compose a scene with a wider field of view.
Cons:
* Less Subject Isolation: Since it captures more of the background, it can be harder to isolate your subject, especially with a busy background. You'll need a wider aperture (smaller f-number) to achieve a shallow depth of field.
* Not as Flattering (Sometimes): At closer distances, a 50mm can introduce slight perspective distortion, especially around the edges of the frame. While not extreme, some photographers find it less flattering than the compressed look of an 85mm.
* More Background Distraction: You need to be more mindful of your background, as it will be more prominent in the shot.
85mm Lens for Portrait Photography:
Pros:
* Excellent Subject Isolation: The longer focal length creates a shallow depth of field, blurring the background and drawing attention to the subject. This is ideal for isolating your subject and creating a pleasing bokeh (background blur).
* Flattering Perspective: The 85mm lens compresses perspective, which is generally considered more flattering for portraits. It minimizes perspective distortion, making faces appear more natural.
* Comfortable Working Distance: It allows you to work from a comfortable distance, which can help your subject feel more relaxed. You're not "in their face."
* Beautiful Bokeh: The longer focal length, combined with a wide aperture, creates exceptionally smooth and creamy bokeh.
* Emphasis on Details: The narrower field of view lets you focus on specific details in the face, such as the eyes or smile.
Cons:
* Less Versatile: Primarily a portrait lens. Less useful for other types of photography (e.g., landscapes, street).
* More Expensive: Generally more expensive than a comparable 50mm lens.
* Requires More Space: You need more room to work, as you'll be standing further away from your subject. This can be limiting in small studios or rooms.
* Can Feel Isolating for the Photographer: Standing further away can make it harder to connect with your subject, especially if you're not used to it.
* Potential for Camera Shake: The longer focal length is more susceptible to camera shake, requiring faster shutter speeds or image stabilization.
Which One is Right for You? Considerations:
* Your Style: Do you prefer environmental portraits or close-ups with blurred backgrounds?
* Your Budget: Factor in the cost of the lens.
* Your Shooting Environment: Will you primarily be shooting in studios, outdoors, or in confined spaces?
* Your Subject: Consider the age and personality of your subject. Some people may feel more comfortable with the photographer standing further away (85mm).
* Crop Sensor vs. Full Frame: On a crop sensor camera, a 50mm lens will be equivalent to approximately 75mm-80mm, making it a good in-between option. An 85mm on a crop sensor becomes even longer, which can be quite isolating.
Recommendation:
* Beginners: The 50mm f/1.8 is an excellent starting point due to its versatility, affordability, and image quality. It's a great way to learn the basics of portrait photography without a large investment. You can then decide if you need a more specialized lens like the 85mm.
* Focus on Subject Isolation and Flattering Perspective: If you primarily shoot portraits and want the best possible subject isolation and a compressed, flattering perspective, the 85mm is a great choice.
* Versatility and Environmental Portraits: If you want a lens that can be used for more than just portraits and you like to include more of the environment in your shots, the 50mm is a better option.
Ultimately, the best way to decide is to try both lenses (or rent them) and see which one you prefer. There's no substitute for hands-on experience. Good luck!