Here's a breakdown of the pros, cons, and alternatives to help determine if it's the right fit for you:
Arguments FOR needing (or wanting) a 70-200mm for portraits:
* Compression: The longer focal length creates a flattering compression effect, making subjects appear slimmer and features more proportionate. It also blurs the background more effectively.
* Background Blur (Bokeh): Typically coupled with a fast aperture (f/2.8 or f/4), this lens creates beautiful background blur, isolating your subject and creating a dreamy look.
* Reach: Allows you to shoot from a distance, capturing more candid and natural expressions. This is especially useful in situations where you can't get too close (e.g., events, wildlife, shy subjects).
* Versatility: While primarily a portrait lens, it can also be used for sports, wildlife, and landscape photography.
* Professional Look: Using a 70-200mm lens often gives your work a more polished, professional feel. The creamy bokeh and compressed perspective contribute to that.
* Separation from Distractions: When shooting on location, the reach allows you to avoid unwanted objects getting into the background.
Arguments AGAINST needing a 70-200mm for portraits:
* Price: 70-200mm lenses, especially those with a fast aperture (f/2.8), can be very expensive.
* Size and Weight: They are large and heavy, which can be tiring to carry around, especially during long shoots.
* Need for Space: Requires more space to work with, especially indoors. In small studios or tight locations, it may be impractical.
* Not Always Ideal for Close-Ups: While great for full-body and medium shots, it may not be the best choice for very tight close-ups.
* Can be intimidating: Some subjects may feel more self-conscious when faced with a large lens.
Alternatives to the 70-200mm for portrait photography:
* 50mm Lens: A "nifty fifty" is affordable, lightweight, and can produce beautiful portraits with shallow depth of field, especially when used with a fast aperture (f/1.8 or f/1.4). Requires you to get closer to your subject.
* 85mm Lens: A classic portrait lens that offers a good balance between compression and working distance. Often considered a more flattering focal length than the 50mm for portraits.
* 35mm Lens: Can be used for environmental portraits, showing the subject in their surroundings. Requires a different approach to composition and depth of field.
* Zoom Lenses (e.g., 24-70mm, 24-105mm): These lenses offer versatility and can cover a range of focal lengths suitable for portraits, but may not offer the same level of background blur as a 70-200mm or prime lens.
* 135mm Lens: Provides similar benefits to the 70-200mm but in a lighter, often cheaper prime lens package. Great for headshots and tighter shots, but less versatile for composing shots at various distances on the fly.
When a 70-200mm is particularly valuable:
* Weddings and Events: Capturing candid shots from a distance without being intrusive.
* Outdoor Portraits: Using natural light and creating background blur to isolate the subject.
* Commercial Portraiture: Clients often expect a professional look with sharp images and pleasing bokeh.
* Photographing Children: Capturing natural expressions without getting too close and potentially disturbing them.
* Working with nervous subjects: If the subject is shy or uncomfortable, the distance that 70-200 provides can help.
Conclusion:
A 70-200mm lens isn't strictly *necessary* for portrait photography. You can definitely create stunning portraits with other lenses. However, it offers unique advantages in terms of compression, background blur, reach, and versatility that make it a highly desirable and often indispensable tool for many professional and serious amateur portrait photographers.
Ultimately, the decision depends on your budget, shooting style, and the type of portraits you want to create. Consider renting a 70-200mm lens before buying to see if it fits your needs and workflow. Try the alternatives mentioned above to see if one of those will meet your needs, as well.