* Photography style
* Subject matter
* Shooting environment
* Personal preferences
* Budget
That being said, here's a breakdown of the pros and cons, helping you decide if a 70-200mm lens would be a valuable addition to your kit:
Arguments FOR a 70-200mm Lens for Portrait Photography:
* Compression: One of the biggest advantages is *compression*. At longer focal lengths (135mm, 200mm), the 70-200mm compresses the background, making it appear closer to the subject. This creates a more pleasing and less distracting backdrop, emphasizing the subject and giving a flattering perspective. It also visually shortens features like noses (which is generally seen as flattering).
* Background Blur (Bokeh): A 70-200mm lens, especially one with a wide aperture (f/2.8 or f/4), excels at creating beautiful, creamy *bokeh*. This isolates the subject from the background, adding depth and visual appeal to your portraits. Even at f/4, you'll achieve significant background separation.
* Working Distance: The longer focal length allows you to stand further away from your subject. This is beneficial because:
* Comfort: It can make subjects feel more relaxed and less self-conscious, resulting in more natural expressions.
* Candid Shots: It allows you to capture candid moments without being intrusive.
* Outdoor Locations: In busy environments, it helps you isolate your subject from unwanted background elements.
* Children & Animals: It provides a safe distance when photographing children or animals.
* Versatility: While primarily a portrait lens, a 70-200mm is also useful for other genres like:
* Events: Capturing candid moments and group shots at weddings or parties.
* Sports: (Especially the f/2.8 version)
* Wildlife: (Though dedicated wildlife lenses are longer)
* Landscape: For compressing landscapes and isolating specific elements.
* Sharpness: High-quality 70-200mm lenses are typically very sharp, delivering excellent detail in your portraits.
* Professional Impression: In some client-facing situations, having a 70-200mm lens can project a more professional image.
Arguments AGAINST a 70-200mm Lens for Portrait Photography:
* Cost: Good 70-200mm lenses, especially those with a constant f/2.8 aperture, are expensive. Even f/4 versions can be a significant investment.
* Size and Weight: They are large and heavy, making them less convenient for travel or longer shooting sessions. This can also make them more intimidating to subjects.
* Indoor Use: The long focal length can be restrictive in smaller indoor spaces. You may find yourself backing up against walls to get the composition you want.
* Learning Curve: Mastering the compression and shallow depth of field requires practice. You need to be precise with your focus.
* Alternatives: Other lenses can achieve similar results, depending on your shooting style. Prime lenses (like 85mm, 100mm, or 135mm) can offer comparable image quality and bokeh at a potentially lower cost and smaller size, although they lack the zoom flexibility.
* Not Essential for All Portrait Styles: If you primarily shoot environmental portraits, close-up headshots, or prefer a wider perspective, a 70-200mm may not be the best choice.
Alternatives to the 70-200mm Lens for Portraits:
* 85mm f/1.8 or f/1.4 Prime: An excellent and often more affordable alternative. It offers great bokeh, sharpness, and is relatively compact.
* 100mm f/2 or f/2.8 Prime: Similar to the 85mm but with a slightly longer focal length for tighter shots. Some 100mm lenses also offer macro capabilities.
* 135mm f/2 Prime: A longer prime lens that delivers beautiful compression and bokeh. Excellent for headshots and isolating subjects.
* 50mm f/1.8 or f/1.4 Prime: A versatile and inexpensive lens that can be used for portraits, but requires you to be closer to your subject. Good for full-body or environmental portraits.
* 24-70mm f/2.8 Zoom: A great all-around lens that can be used for portraits, although it doesn't offer the same level of compression or bokeh as a 70-200mm.
* 35mm f/1.4 or f/1.8 Prime: Wide angle great for environmental portraits and storytelling.
Consider These Questions Before Buying:
* What is my budget?
* What type of portraits do I typically shoot (headshots, full-body, environmental)?
* Where do I typically shoot (indoors, outdoors)?
* Do I prefer working at a distance from my subjects?
* Do I need the versatility of a zoom lens?
* Am I comfortable carrying a large and heavy lens?
Conclusion:
A 70-200mm lens is a powerful tool for portrait photography, offering excellent compression, background blur, and versatility. However, it's not a necessity for every photographer. Weigh the pros and cons, consider your shooting style and budget, and explore alternative lenses before making a decision. Renting a 70-200mm lens for a weekend is a great way to see if it fits your needs before committing to a purchase. If you find yourself consistently wishing you had a longer lens with more compression and bokeh, then a 70-200mm might be the perfect addition to your camera bag.