Here's a breakdown of the arguments for and against needing a 70-200mm lens for portrait photography:
Arguments FOR a 70-200mm lens:
* Compression: This is the BIGGEST advantage. The longer focal length creates compression, which means that the background appears closer to the subject, and facial features can look more flattering (less distortion). This compression can create a more visually pleasing separation between the subject and the background.
* Background Blur (Bokeh): With a wide aperture (often f/2.8), the 70-200mm lens produces creamy, beautiful background blur, isolating your subject and drawing the viewer's eye. It can melt away distracting backgrounds.
* Reach and Distance: The reach allows you to photograph subjects from a comfortable distance, which can be less intimidating and allow for more natural expressions, especially with candid portraits. It's also useful in crowded environments or when you can't physically get closer to your subject.
* Versatility: It's not just for portraits! It can be used for events, sports, wildlife, and even landscapes in a pinch.
* Sharpness: 70-200mm lenses, especially the higher-end versions, are known for their exceptional sharpness.
* Zoom Flexibility: The zoom range allows you to quickly adjust your framing without moving around, which can be helpful when photographing moving subjects or in dynamic situations.
Arguments AGAINST a 70-200mm lens:
* Price: 70-200mm lenses are often expensive, especially those with a fast aperture (f/2.8). This can be a significant barrier to entry.
* Size and Weight: They are bulky and heavy, which can make them tiring to carry around for extended periods. This is especially true for the f/2.8 versions.
* Close-Quarters Limitations: In tight spaces or smaller studios, the minimum focusing distance or simply the length of the lens itself can be a problem. You might not be able to back up far enough to get the shot you want.
* Other Lenses Can Do the Job: Other lenses can achieve similar results. Prime lenses like 85mm, 100mm, or 135mm lenses are often cheaper, lighter, and can have wider apertures (f/1.8, f/1.4) for even more background blur.
* Not Ideal for Full Body Shots in Small Spaces: As mentioned above, the focal length makes it difficult to capture full-body portraits in confined spaces.
* Reliance Can Stifle Creativity: Over-reliance on a 70-200mm can limit your exploration of different perspectives and compositions. Experimenting with wider angles can lead to unique and interesting portraits.
Alternatives and Considerations:
* Prime Lenses (85mm, 100mm, 135mm): These are excellent choices for portraiture. They are often sharper, have wider apertures, and are more affordable than a 70-200mm. However, you lose the zoom versatility.
* Shorter Zoom Lenses (24-70mm, 24-105mm): These can be versatile options, but they don't offer the same compression or background blur as a 70-200mm.
* Budget: Consider your budget. If you're just starting out, a cheaper prime lens might be a better investment.
* Shooting Style: What kind of portraits do you typically shoot? If you primarily do environmental portraits or full-body shots, a wider lens might be more suitable. If you focus on headshots and close-ups, a longer lens like the 70-200mm can be ideal.
* Space Limitations: Think about where you typically shoot. If you often work in small studios or tight spaces, a 70-200mm might be too restrictive.
* Crop Sensor vs. Full Frame: The effective focal length changes depending on your camera's sensor size. On a crop sensor camera, a 70-200mm lens has an effective focal length of 105-300mm (approximately), which can make it even more challenging to use in tight spaces.
Conclusion:
While a 70-200mm lens is a powerful and versatile tool for portrait photographers, it's not a necessity. It excels at creating flattering portraits with beautiful background blur and separation, especially when space allows. However, it's a significant investment and may not be suitable for all shooting styles or situations.
Before investing in a 70-200mm lens, consider your budget, shooting style, typical shooting environments, and whether other lenses might better suit your needs. Try renting one first to see if it fits your workflow and creative vision. You might find that a prime lens offers a better balance of price, performance, and size for your specific portrait photography needs.