Here's a breakdown of the arguments for and against needing a 70-200mm for portraiture:
Arguments FOR a 70-200mm Lens:
* Compression and Background Blur: This is the biggest advantage. The longer focal lengths create beautiful subject isolation, compressing the background and producing a pleasing bokeh. This effect is highly desirable for portraits and can be difficult to achieve with wider lenses. It makes the subject stand out and minimizes distractions.
* Distance and Comfort: Allows you to photograph subjects from a comfortable distance, which can be crucial for shy or self-conscious subjects. It allows for more candid shots and natural expressions.
* Flexibility: Covers a wide range of focal lengths useful for portraits. You can easily transition from full-body shots at 70mm to tight headshots at 200mm without switching lenses.
* Sharpness and Image Quality: Generally, 70-200mm lenses are very sharp, especially the higher-end models. They are designed for professional use and often boast superior optics.
* Versatility Beyond Portraits: Useful for other genres like sports, wildlife, events, and even landscapes. It's a workhorse lens that can handle a variety of situations.
* Professional Look: Clients often perceive the use of professional gear, including a 70-200mm, as an indicator of skill and experience.
Arguments AGAINST a 70-200mm Lens:
* Price: High-quality 70-200mm lenses are expensive. They represent a significant investment.
* Size and Weight: They are large and heavy lenses, which can be cumbersome for travel or long shooting sessions. This can be tiring and less discreet.
* Limited Use in Tight Spaces: Not ideal for indoor studios with limited space or small rooms. You'll struggle to get enough distance between you and your subject.
* Requires a Wider Aperture: To achieve a shallow depth of field similar to a 70-200mm, you might need a prime lens with a wider aperture (e.g., 50mm f/1.4 or 85mm f/1.4).
* Steeper Learning Curve (sometimes): Mastering longer focal lengths can require more attention to camera shake and precise focusing.
* Other Lenses Can Be Just as Good (and More Affordable): Excellent portraits can be achieved with other lenses like 35mm, 50mm, 85mm, and even wider angles depending on the creative vision.
Alternative Lenses for Portraiture:
* 50mm f/1.8 or f/1.4: Affordable, lightweight, and excellent for portraits, especially in tighter spaces.
* 85mm f/1.8 or f/1.4: A classic portrait lens known for its beautiful bokeh and flattering perspective.
* 35mm f/1.4 or f/1.8: Useful for environmental portraits and capturing more of the scene.
* 24-70mm f/2.8: A versatile zoom lens that can be used for a variety of purposes, including portraits. It provides a range of focal lengths in a single lens.
Ultimately, Consider These Questions:
* What is your portrait style? Do you prefer tight headshots, environmental portraits, or full-body shots?
* Where do you typically shoot? Indoor studios, outdoor locations, or both?
* What is your budget? Can you afford a high-quality 70-200mm lens?
* What other types of photography do you pursue? Would a 70-200mm be useful for other genres?
* What are your current lenses? Do you already have lenses that cover similar focal lengths?
Conclusion:
A 70-200mm lens is a fantastic tool for portrait photographers, offering beautiful compression, subject isolation, and versatility. However, it's not a universal necessity. If you shoot primarily in tight spaces or are on a tight budget, other lenses like a 50mm or 85mm might be a better choice. The best lens is the one that helps you achieve your creative vision and suits your shooting style and environment. Renting a 70-200mm lens before buying is always a good idea to see if it's a good fit for you.