The minimum focusing distance  is an important factor that photographers need to consider while shooting. It determines the clarity and detail of the closest objects we can capture. In this article, we will explore the concept of the minimum focusing distance of camera lenses, its impact on photographic creation, and how to make the most of this technique for artistic expression in macro photography.

First, let's explain what focusing  is. Focusing is the adjustment of the distance between the subject and the camera lens. As the focus ring is adjusted, light passes through the lens system and focuses at different distances. If the focus ring is set correctly, the subject will be clearly presented on the imaging plane; otherwise, the subject may appear blurry or unclear.

What is the minimum focusing distance?

The minimum focusing distance  is an important technical parameter of a lens that determines the clarity and detail of the closest objects a photographer can capture clearly. When the object is closer to the lens than the minimum focusing distance, the lens will not be able to focus clearly. Similar to our eyes, when an object is very close to the eyes, we cannot see it clearly, which means we cannot focus.

The minimum focusing distance of a lens can be found on the focus ring of the lens. Different focal lengths, different brands, and even lenses of the same brand and focal length released at different times may have different minimum focusing distances. For example, the Leica lens Summilux-M 35mm F1.4 ASPH has a minimum focusing distance that has been reduced from the original 0.7 meters to 0.4 meters in the new version, giving the lens a certain macro and close-up capability. However, due to the rangefinder coupling system of Leica cameras, when the closest focusing distance exceeds 0.7 meters, the rangefinder coupling focus system will fail, requiring the use of the electronic viewfinder to compose the shot. Therefore, when the lens focus ring is rotated from 0.7 to 0.4, it adds a certain tactical sensation to remind you. Users of different models should use the appropriate methods to achieve accurate focusing.

From Simera 35mm f/1.4 and Simera 28mm f/1.4, we can see that their closest focusing distances are 0.45 meters and 0.4 meters respectively, both have tactile feedback at 0.7 meters for focus failure. Additionally, this lens is equipped with a visual  depth of field scale  design that allows photographers to accurately estimate the shooting distance and depth of field range. Surprisingly, this lens is priced at just $699, making it a highly cost-effective budget choice.

These innovative designs and technological breakthroughs enable photography enthusiasts and photographers to express their creativity and visual ideas more freely. Whether it is Leica's classic lenses or Thypoch's new products, they continue to push the development of photographic technology, allowing us to better capture the beautiful moments in life. With ongoing technological advancements, we can expect more surprising photographic equipment to emerge, providing us with more shooting possibilities.

What functions does the closest focusing distance of a lens serve?

• Excellent bokeh effect (blurred background)

A shorter closest focusing distance  allows you to get closer to the subject. The farther the subject is from the background, the more pronounced the background blur becomes, making it easier to achieve the so-called "bokeh" effect. This is particularly helpful for shooting works that require shallow depth of field. To some extent, if the aperture is not large enough and the focal length is not long enough  and  you can get closer to the subject, you can still achieve a good bokeh effect.

Taken with Simera 28mm f/1.4 @東來_ldldick

• Macro function to a certain extent (magnification effect)

A shorter closest focusing distance  can help you capture small objects or take macro photos. It allows you to get closer to the subject, capturing details at a larger size and presenting a greater magnification effect in the image, revealing the subtleties of the object. This is very useful for macro photography or shooting very small subjects and can create unique visual effects that make the subject more spectacular and eye-catching.

Taken with Simera 35mm f/1.4, @weipanpp

The maximum magnification is related to the focal length and design of the lens. Some specially designed macro lenses usually have a closer minimum focusing distance and a larger maximum magnification. Regular standard lenses have lower maximum magnification. Although a closer focusing distance can achieve a certain magnification effect, it does not mean it can replace the visual impact brought by macro lenses. Do not confuse "maximum magnification" with "minimum focusing distance".