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Depth-of-fleld preview lever ®

What depth of field is

When you focus on your subject at a certain aperture, you will find that not only is the subject itself in focus but objects in a certain distance range both in front of and behind it appear sharp. Objects increasingly out of this range become in- creasingly out of focus. This " in-focus zone" is known as "depth of field ." When this zone of sharpness is large, the depth of field is said to be deep; when it is small, the depth of field is said to be shallow.

The following can be said of depth of field, given the same focusing distance :

1)The smaller the taking aperture (i.e., the higher the flstop number), the deeper the depth of field , and the larger the aperture, the shallower the depth of field.

2)The farther away the subject is from the lens, the deeper the depth of field becomes ; the closer to the lens, the shallower the depth of field .

3)There 'sgreater depth of field behind the main subject than in front of it.

Note, too, that in the case of lenses with different focal lengths but of the same maximum flnumber, the shorter the focal length of the lens, the larger the depth of field, and vice versa. The depth of field at the taking aperture is indicated by the color· coded lines having the same color as that of the aperture set and which correspond to the distance scale on the focusing ring . The range is indicated by the distance between the lines. Shown in the photo is an example of the difference in depth of field with a 50mm f/1.4 lens when using different aperture set· tings at a set focusing distance of 2 m. Control of depth of field enables selective blurring of the background elements of a picture either to let the major subject stand out or for overall sharpness, so that all elements in the entire picture field appear sharp. This will give your picture its own character, thus making it different from other pictures.

Getting the subject in focus is only one aspect of photography. When you take pictures, be sure to consider depth of field, too.

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Nikon FM2 Body only, 1683 instruction manual Depth-of-fleld preview lever, What depth of field is
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1683, FM2 Body only specifications

The Nikon 1683, also known as the Nikon FM2, is a highly regarded 35mm film camera that exemplifies the craftsmanship and design ethos of Nikon. Manufactured from 1982 to 2001, the FM2 is cherished by both amateur and professional photographers for its reliability, simplicity, and robust build quality. As a fully manual camera, the FM2 emphasizes the art of traditional photography, allowing users to engage fully with the photographic process.

One of the hallmark features of the FM2 is its durable, lightweight aluminum body. This construction provides not only a feel of solidness but also enhances portability for on-the-go shooting. The camera is equipped with a vertical-travel mechanical focal-plane shutter, capable of achieving shutter speeds from 1/4000 to a full second, with a flash sync speed of 1/200 second. This extensive range enables photographers to adapt to various lighting conditions, making the FM2 versatile for both bright outdoor scenes and low-light environments.

The FM2 boasts a unique feature known as the interchangeable focusing screen, allowing users to customize their viewing experience according to their shooting style or the type of photography being pursued. The clear and bright viewfinder provides precise framing and focusing, essential for achieving sharp images.

Another significant aspect of the Nikon FM2 is its compatibility with a wide range of Nikon F-mount lenses, both manual and autofocus options. This compatibility enables photographers to explore different focal lengths, depths of field, and creative perspectives, enhancing their artistic expression through various lens choices.

The FM2 also incorporates a precise exposure metering system. The camera features a center-weighted metering mode, which provides accurate readings based on the central area of the frame. This ensures that exposure is determined with precision, a critical aspect for achieving well-balanced photographs.

As a mechanical camera, the FM2 does not rely on batteries for basic operation, making it an ideal choice for shoots in remote locations or during extended outdoor adventures. The battery is only required for the light meter, demonstrating the FM2’s focus on functionality and reliability without the dependency on electronic components.

In summary, the Nikon 1683, or FM2, stands out as a timeless piece in the realm of film photography. With its mechanical shutter, robust build, interchangeable focusing screens, and compatibility with an extensive range of lenses, the FM2 remains a favorite for purists who appreciate the manual photography process and the high-quality images that can be achieved through this classic camera.
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