Useful tips

What do DSLR lens numbers mean?

What do DSLR lens numbers mean?

Focal length is expressed in mm and a higher number means a bigger zoom, while a lower number mean the lens can be used for wider shots. A number lower than 30-50 mm will take in a bigger view than you naturally see, while higher numbers mean focus will be on a smaller aspect of your view.

What are camera lens specifications?

Camera lens specifications include the various types of lenses, focal lengths, aperture range, thread sizes, mounts, lens speed, sensor compatibility, model numbers, stabilization types, focusing motors, special materials.

What do the numbers on lenses mean?

The first number or pair of numbers indicates the range of available focal lengths in millimeters. From this you can tell what angles of view the particular lens can handle. Lower numbers mean a wider angle. So an ordinary, basic 18-55 DSLR lens can “zoom” from medium-wide views out to the beginning of telephoto range.

What does 1 3.5 4.5 mean on a camera lens?

What does the ratio mean, you know the 1:1.8G or 1:3.5-4.5G? These numbers represent the lenses widest available aperture (smaller number = wider aperture). The wider the aperture the more light is let in + more bokeh.

What does f4 lens mean?

It means it’s a zoom lens that can open as wide as f/4 when zoomed out to the widest angle of view. Remember that apertures are expressed as ratios or fractions, so f/4 means 1:4 (the aperture is 1/4 of the focal length) and f/5.6 means 1:5.6 (the aperture is 1/5.6 of the focal length).

What should I know about DSLR camera lenses in detail?

For a 35mm film camera or a full-frame DSLR, the 50mm lens is considered standard. At higher focal lengths (85mm or 100mm) you have an ideal lens for portraiture, because when coupled with a wide aperture they thoroughly soften any background detail, thus making it less likely to distract from the main subject.

What is the sensor size of a DSLR?

Sensor Size (full/cropped): This identifies the camera’s sensor size in terms of a 35mm frame of film (these are called “full-frame” cameras) or smaller (called “cropped-frame” dSLRs). Here is a summary of today’s dSLR sensor sizes: 35mm: Also known as full-frame cameras. I identify them as “35mm”.

What is the standard length of a camera lens?

The standard lens has a fixed focal length (50mm, 85mm, 100mm), and reproduces fairly accurately what the human eye sees – in terms of perspective and angle of view. For a 35mm film camera or a full-frame DSLR, the 50mm lens is considered standard.

What’s the field of view on a 50mm DSLR?

A 50mm lens on a full-frame dSLR has a field of view of around 46 degrees. The same lens has a narrower field of view (31.5 degress) on an APS-C camera. As a result, lenses feel more “zoomed in” when you’re using them on a camera with a larger crop factor.