Here's a breakdown of the pros and cons, and what to consider:
Arguments for Needing a 70-200mm Lens for Portraits:
* Compression: One of the biggest reasons portrait photographers love the 70-200mm is the compression it creates. Longer focal lengths flatten perspective, making subjects appear less distorted and more flattering. This is especially noticeable on facial features. It minimizes the appearance of a larger nose, for example, and creates a more pleasing overall look.
* Subject Isolation: Longer focal lengths naturally create a shallow depth of field, blurring the background beautifully and isolating the subject. This is highly desirable in portrait photography, helping to draw the viewer's attention directly to the person.
* Working Distance: The 70-200mm allows you to stand further away from your subject. This can make them feel more comfortable and relaxed, leading to more natural and authentic expressions. It's especially useful for photographing shy or self-conscious subjects. You can capture candids more easily, too.
* Versatility: While primarily a portrait lens, the 70-200mm can also be used for other genres like sports, wildlife, and event photography, making it a worthwhile investment if you shoot beyond portraits.
* Background Bokeh: The lens typically offers a wide aperture (f/2.8 is common), which contributes significantly to creating beautiful, creamy bokeh in the background.
* Zoom Capability: The zoom range gives you flexibility in framing shots. You can quickly switch between wider shots that include more of the environment and tighter headshots without physically moving.
Arguments Against Needing a 70-200mm Lens for Portraits:
* Cost: 70-200mm lenses, especially those with a constant f/2.8 aperture and image stabilization, can be quite expensive. There are often much more affordable options to achieve similar results, albeit with compromises.
* Size and Weight: These lenses are typically large and heavy, which can be tiring to carry around and use for extended periods. This can be a significant factor if you're doing a lot of on-location shooting.
* Requirement for Space: The longer focal length requires more space between you and your subject, which can be problematic in smaller studios or confined locations.
* Alternatives Exist: Excellent portraits can be created with other lenses:
* 50mm Lens: A 50mm lens (especially a fast one like f/1.8 or f/1.4) is a classic portrait choice, particularly for closer shots and environmental portraits. It's much more affordable and compact than a 70-200mm.
* 85mm Lens: The 85mm lens is often considered the sweet spot for portraiture by many photographers. It provides a good balance between compression, subject isolation, and working distance. It's often smaller and less expensive than a 70-200mm.
* Primes in general: Many primes between 35mm and 135mm can deliver stunning portraits, it just requires understanding the unique characteristics of each.
* Zoom lenses in other ranges: While not ideal, some photographers can get by with a wide-to-telephoto zoom, like a 24-70mm or 24-105mm, particularly for environmental portraits.
Factors to Consider Before Buying a 70-200mm Lens:
* Your Budget: Can you afford a good quality 70-200mm lens? Consider used options or third-party brands to save money.
* Your Shooting Style: Do you primarily shoot in a studio, outdoors, or a combination of both? Do you prefer tighter headshots or wider environmental portraits?
* Your Subject Matter: Do you photograph individuals, couples, families, or groups? The lens works well for all, but may be overkill for simple headshots.
* Your Physical Limitations: Are you comfortable carrying a heavy lens for extended periods?
* Your Current Gear: What lenses do you already own? Could you achieve similar results with your existing gear, or is a 70-200mm truly filling a gap?
* Your Needs: What do you need it for? If you shoot events in addition to portraits then it might be more valuable to you.
* Your Photography Goals: Where do you see your photography headed? If you're striving for a more professional and polished look, a 70-200mm can definitely help.
Conclusion:
A 70-200mm lens is a powerful tool for portrait photographers, offering excellent image quality, compression, subject isolation, and versatility. However, it's not a *necessity*. You can absolutely take amazing portraits with other lenses, particularly 50mm and 85mm primes.
Recommendation:
* If you can afford it and you frequently shoot portraits, especially outdoors or in situations where you need to stand further away from your subject, a 70-200mm lens is a great investment.
* If you're on a tight budget, a 50mm or 85mm prime lens is a much more affordable and still excellent option.
Before making a purchase, try renting a 70-200mm lens to see if it fits your shooting style and needs. This will help you make an informed decision.