Why a 70-200mm is a Great Portrait Lens:
* Compression: The longer focal lengths (especially 135mm and beyond) offer beautiful compression, which minimizes distortion and helps flatten features in a flattering way. This makes the subject appear more proportional and less stretched.
* Bokeh (Background Blur): The combination of the longer focal lengths and typically wide apertures (f/2.8 or f/4) create beautiful, creamy bokeh, isolating the subject and drawing the viewer's eye to them.
* Working Distance: Allows you to maintain a comfortable working distance from your subject. This can be crucial for making people feel relaxed and natural, especially if they're shy or uncomfortable in front of the camera. It also allows you to avoid being too close and potentially making them feel crowded.
* Versatility: You can use it for headshots at the 70-100mm end, and then zoom in for tighter shots like waist-up or even details. It's also great for action shots during portrait sessions with kids or pets.
* Professional Look: A 70-200mm often projects a more professional image. Clients may perceive you as more serious and experienced.
* Background Separation: The compression helps pull the background closer to the subject, which can be useful in creating a more cohesive and visually appealing image, especially in busy locations.
Why You Might *Not* Need a 70-200mm:
* Cost: High-quality 70-200mm lenses are often expensive, especially those with a fast aperture like f/2.8. There are cheaper options, but they often sacrifice image quality or build quality.
* Size and Weight: These lenses are typically large and heavy, which can be tiring to carry around all day.
* Space Requirements: You need a decent amount of space to use it effectively. It can be limiting in smaller studios or confined spaces.
* Alternatives Exist: There are other lenses that can produce excellent portraits. Prime lenses like 35mm, 50mm, 85mm, and 135mm are all popular choices, each with its own strengths and weaknesses. A versatile zoom like a 24-70mm or even a 24-105mm can also be a good alternative, though it won't offer the same level of compression or bokeh.
* Your Style: The best lens ultimately depends on your personal style and what you're trying to achieve. If you prefer a wider perspective or capturing more environmental context, a 70-200mm might not be the best fit.
Alternatives to Consider:
* 85mm Prime Lens: A classic portrait lens, offering excellent image quality, beautiful bokeh, and a more affordable price point.
* 135mm Prime Lens: Offers even more compression and bokeh than an 85mm, while still being relatively affordable. It requires more space than an 85mm.
* 50mm Prime Lens: A versatile and affordable lens that can be used for portraits, but it requires you to get closer to your subject.
* 24-70mm or 24-105mm Zoom Lens: A good all-around lens that can be used for a variety of photography, including portraits. However, it won't offer the same level of compression or bokeh as a 70-200mm or a prime lens.
Questions to Ask Yourself:
* What kind of portraits do I shoot? (Headshots, full-body, environmental portraits?)
* What kind of budget do I have?
* What are the typical shooting locations? (Studio, outdoors, small spaces?)
* What is my preferred shooting style? (Distant, close-up, wide-angle?)
* Do I value compression and bokeh?
* Am I willing to carry a heavy lens?
In Conclusion:
A 70-200mm is a fantastic lens for portrait photography, offering a winning combination of compression, bokeh, and working distance. However, it's not a mandatory purchase. Consider your budget, shooting style, and typical environments before deciding if it's the right tool for *you*. Experiment with other lenses and see what works best for your artistic vision. You might be surprised by what you discover! Many photographers, myself included, have used other focal lengths to great effect for portraiture.