Why a 70-200mm is often considered essential for portrait photography:
* Compression: The longer focal length of a 70-200mm compresses perspective. This means the background appears closer to the subject than it actually is. This effect is often considered flattering, making features like the nose appear less prominent and minimizing the perceived distance between the eyes and other facial features.
* Beautiful Bokeh: 70-200mm lenses, especially those with wider apertures (f/2.8 is highly desirable), produce incredibly smooth and creamy bokeh (background blur). This helps isolate the subject and creates a professional and appealing look.
* Versatility: While excellent for headshots and tight portraits, a 70-200mm lens can also be used for wider environmental portraits. It offers flexibility to adjust the composition without physically moving as much.
* Working Distance: It allows you to stand further away from your subject. This can make some subjects feel more relaxed and natural, especially those who might be uncomfortable with a camera being too close. It's also beneficial when shooting candid or semi-candid portraits.
* Telephoto Reach: If you shoot events, weddings, or any situation where you can't get close to your subject (like wildlife portraits!), the 70-200mm offers valuable reach.
* Image Quality: Many 70-200mm lenses are built to a high standard, often with premium glass and robust construction, resulting in sharp and high-quality images.
Why you might NOT need a 70-200mm lens:
* Cost: 70-200mm lenses, especially those with a constant f/2.8 aperture, are expensive. This is a significant investment.
* Size and Weight: These lenses are large and heavy, which can be cumbersome, especially during long shoots. This can lead to fatigue.
* Space Requirements: You need space to use a 70-200mm lens effectively. Small studios or confined locations can make it challenging to achieve the desired composition.
* Alternatives Exist: Other lenses can produce excellent portraits:
* 50mm: A "nifty fifty" is affordable, lightweight, and excellent for portraits, especially in tighter spaces. While it doesn't offer the same compression as a 70-200mm, it's still a very popular choice.
* 85mm: Considered a classic portrait lens, the 85mm offers a good balance of compression, bokeh, and manageable size. It's a great compromise if you find the 70-200mm too bulky.
* Primes (e.g., 35mm, 135mm): Prime lenses (fixed focal length) often offer superior image quality and wider maximum apertures compared to zooms. A 35mm can be used for environmental portraits, while a 135mm offers similar compression to a 70-200mm at the long end.
* Your Style of Photography: If you primarily shoot wide-angle environmental portraits, a 70-200mm might not be the best choice. Similarly, if you prefer very close-up portraits and have no need for compression, a shorter focal length lens might be more suitable.
* Stabilization (VR/IS): While image stabilization is beneficial, especially in low light, it can be less critical if you mainly shoot portraits with controlled lighting or use a tripod. Lenses *without* stabilization are often less expensive.
Here's a breakdown of the decision process:
* Consider Your Budget: Can you afford a high-quality 70-200mm lens? If not, an 85mm or 50mm lens is a more budget-friendly option.
* Evaluate Your Shooting Style: Do you often need to stand far away from your subjects? Do you value background compression and creamy bokeh?
* Think About Your Shooting Environment: Do you shoot primarily in studios, outdoors, or a combination? Do you have the space to use a longer focal length?
* Experiment: Rent a 70-200mm lens for a weekend and see if it fits your workflow and provides the results you're looking for. Compare the results to portraits you've taken with other lenses.
Conclusion:
A 70-200mm lens is a powerful tool for portrait photography, offering compression, beautiful bokeh, and versatility. However, it's not a *necessity* for all portrait photographers. Consider your budget, shooting style, and environment before making the investment. Alternatives like 50mm and 85mm lenses can also produce stunning portraits and may be a better fit for your needs. Ultimately, the best lens is the one that helps you achieve your creative vision and fits your workflow.