Lens what does f number mean

What does the F number on a camera lens mean? What does F 2. What does F4 5. What do numbers mean on cameras? What does 1 1. Photography Stack Exchange is a question and answer site for professional, enthusiast and amateur photographers. It only takes a minute to sign up. Connect and share knowledge within a single location that is structured and easy to search.

On this particular lens rim is written "F What does it mean? Focal point 3. The F 2. A lower number means more light can hit the sensor. A lower number also means you can easier get the background out of focus. This is the number that describes if it's a wide angle lens like a GoPro or a telephoto lens like sports and wildlife photographers use. In this case 3. After googling I see that the 35mm equivalent is a 37 mm lens.

Also note that the camera only has digital zoom. The result will be, let's just say, not what you hoped for if you use the digital zoom. My advice is to look for something with optical zoom.

It's a massive difference. Even a used old camera is probably better, if you ever need the zoom. If you never ever need the zoom than this is probably fine. It seems their marketing department needs to learn how the focal length works, since this diagram shows a longer focal length as wider. That is backwards. F: in this case F A lower number means more light-gathering ability. Read What is aperture, and how does it affect my photographs?

Twist the dial to change the aperture. Some lenses let you turn on and off image stabilisation. Landscape photographers often turn this off when mounting a camera on a tripod.

You may alter the focusing distance or toggle between auto and manual focus on the lens. It is important to know what all the letters and number of your camera lens mean.

Each lens manufacturer has a unique way of labelling lens features. At the least, you can expect to see the maximum aperture f-stop and focal length labelled on the lens. You may also see other features of the lens, including the mount. When buying a new lens, look carefully at every letter and number. Each holds valuable information. Leaving your camera on its default settings will produce blurry results. Share with friends Share. Show Comments 12 Hide Comments. Related Articles.

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There are a number of bacilli, called acid-fast bacilli, which stain in the same way as the tubercle bacillus. Five of the number had studied with Liszt before, and the young men are artists already before the public. E was an Esquire, with pride on his brow; F was a Farmer, and followed the plough. New Word List Word List.