Here's a breakdown of why and why not:
Arguments for Needing a 70-200mm for Portraits:
* Compression: The longer focal lengths of a 70-200mm lens create a flattering compression effect. This means that features like the nose and ears are less exaggerated, leading to a more pleasing portrait. Backgrounds appear closer and less distracting.
* Background Separation (Bokeh): 70-200mm lenses, especially those with wide apertures (f/2.8 is ideal), excel at creating beautiful background blur (bokeh). This helps to isolate the subject and draw the viewer's eye to them.
* Working Distance: You can achieve headshots or tighter compositions from a comfortable distance. This allows you to be less intrusive and potentially more candid, especially with shy subjects. You can give direction without being right in their face.
* Versatility: 70-200mm lenses aren't just for portraits. They're great for events, sports, wildlife, and even some landscape photography, making them a valuable investment.
* Professional Look: It's often seen as a standard professional lens. If you're charging for your portrait work, a 70-200mm can lend credibility to your gear and therefore your services.
* Zoom Range: The zoom range offers flexibility in framing without having to physically move, especially useful in crowded locations or when you want to quickly switch between full body and headshots.
* Often Excellent Image Quality: 70-200mm lenses are usually built to a high standard, often with superior optics compared to kit lenses.
Arguments Against Needing a 70-200mm for Portraits:
* Cost: High-quality 70-200mm lenses, particularly those with a wide aperture (f/2.8), are expensive. They can be a significant investment, especially for beginners.
* Size and Weight: These lenses are large and heavy, which can be tiring to carry around for extended periods. This can be a problem for location shoots or travel.
* Not Always Necessary: Excellent portraits can be taken with a variety of other lenses. Prime lenses like 35mm, 50mm, and 85mm are all popular choices, and can be just as effective depending on the desired aesthetic.
* Space Requirements: Indoors, you might find that you don't have enough space to use the longer focal lengths effectively. A smaller lens might be more practical in tight environments.
* Alternatives Exist: You can achieve similar compression and bokeh effects with other lenses, though it might require different techniques or post-processing.
* Style Preference: Some photographers prefer the more intimate feel of shorter focal lengths, allowing them to connect with their subjects on a deeper level. A 70-200mm can sometimes feel distancing.
Alternatives to a 70-200mm:
* 85mm Prime: A classic portrait lens, offering excellent sharpness and bokeh. It's generally more affordable and lighter than a 70-200mm.
* 50mm Prime: A very versatile and affordable lens, great for environmental portraits and wider shots. Requires you to get closer to your subject.
* 35mm Prime: Good for environmental portraits and storytelling, showing more of the surroundings.
* Zoom Lenses in Other Ranges: A 24-70mm lens can also be used for portraits, though it won't offer the same level of compression or bokeh as a 70-200mm.
* Telephoto Lens (e.g., 135mm): If you're primarily interested in the telephoto range for portraits and don't need the flexibility of a zoom, a prime telephoto can be a great option.
Conclusion:
A 70-200mm lens is a fantastic tool for portrait photography, offering excellent image quality, flattering compression, beautiful bokeh, and versatility. However, it's not a mandatory requirement. The best lens for you depends on your:
* Budget: Can you afford a high-quality 70-200mm?
* Shooting Style: Do you prefer to work from a distance or up close?
* Space Constraints: Will you be shooting in small spaces?
* Desired Aesthetic: Do you want significant background blur and compression?
* Other Photography Needs: Will you use the lens for other types of photography besides portraits?
Consider your individual needs and preferences before making a decision. Renting a 70-200mm lens to test it out before buying is a great way to see if it suits your style and workflow. Ultimately, the best lens is the one that helps you achieve your creative vision and produce the portraits you want to create. Don't feel pressured to buy one just because it's popular among portrait photographers.