The Difference Between 47mm and 50mm Focal Length: Understanding the Impact on Photography
Photographers often find themselves contemplating the use of different lenses, specifically in choosing between the 47mm and 50mm focal lengths. This guide will help you understand the distinctions between these two focal lengths, their impact on your photos, and when to use each one.
Focal Length Basics
Focal length is a measurement used to describe the distance over which incoming parallel rays of light are converged to a point by the lens. In simpler terms, it indicates how much a lens will magnify an image. The shorter the focal length, the wider the field of view (FOV) will be. Conversely, the longer the focal length, the narrower the field of view will be.
47mm vs 50mm Focal Lengths
Both 47mm and 50mm are relatively close focal lengths and are often considered standard lenses in photography. They are typically found on full-frame cameras, where the 50mm is often referred to as the ‘nifty fifty’ due to its versatility and quality at a competitive price.
47mm Focal Length: Although not a standard focal length, the 47mm is essentially a slight variation from the 50mm. It offers a slightly narrower field of view, approximately 45°, as compared to the 47° of the 50mm. This small difference means that the 47mm will crop a bit more of the image compared to the 50mm. However, the difference in FOV is minimal and hardly noticeable in most photographic contexts.
50mm Focal Length: The 50mm focal length is a classic 'normal' lens, providing a view that is about equal to the angle of view seen by the human eye. It offers a balanced field of view, allowing the viewer to see the environment as it would naturally appear. The slight offset in focus at 50mm can make it an ideal choice for portraits or street photography, where a slightly narrower angle can help to compress the background.
When to Use Each Focal Length
The choice between 47mm and 50mm comes down to the specific needs and preferences of the photographer. Here are some scenarios where each might be more suitable:
47mm
Macro Photography: The slightly narrower FOV can be advantageous when capturing detailed macro shots, as it can help in achieving the maximum possible depth of field.
Close-Up Portraits: While 50mm is excellent for portraits, the 47mm can be used for close-up shots where a slight compression of background elements is preferred.
Environmental Portraits: This focal length is well-suited for capturing subjects within their natural environment, where a slightly wider view is beneficial.
50mm
Portraits: The classic 50mm 'normal' lens is highly regarded for its ability to provide a natural perspective, making it ideal for portraits where a slightly narrower background compression can add to the subject's prominence.
Street Photography: The 50mm focal length is perfect for street photography, as it provides an angle of view that feels organic and unobtrusive.
Beginner Photography: Due to its balance and versatility, the 50mm is often recommended for photographers starting out, making it a reliable choice for everyday use.
Conclusion
In conclusion, while there is a small difference in focal length between 47mm and 50mm, it is often negligible in practical photography. The choice largely depends on the specific requirements of the shot and the photographer's preferences. Whether you opt for the 47mm or the 50mm, both offer unique perspectives that can enhance your photographic storytelling. Remember, the key is to experiment and find the focal length that brings out the best in your photography.