DSLR CAMERA LENS

Owning a DSLR camera has always been a dream of mine. Not only me, some of my friends share this dream. and as requested by JeE Knows ThiS blog fan KANTH RAJ, who is my brother who also shares the dream of owning a DSLR camera 1 day, Iam posting about the lenses of these modern cameras.

Before that, What is SLR and DSLR?

SLR is single-lens reflex camera
DSLR digital single-lens reflex camera

Now to the lens

Also known as photographic lens, objective lens or photographic objective

is an optical lens or assembly of lenses used with a camera body to make images of objects capable of storing an image chemically or electronically

A lens may be permanently fixed to a camera, or it may be interchangeable with lenses of different focal lengths, apertures, and other properties

FOCAL LENGTH

The lens' focal length determines the magnification of the image projected onto the image plane

• with a short focal length you have to be close to your subject for a close-up

• with a long focal length you can be far away and still get a close-up

APERTURE

The aperture the light intensity of that image

Easily to say, aperture means the amount of light let in by the lens or the gap the lens has

These are the standard aperture scale


f/1.4     f/2.0     f/2.8     f/4.0     f/5.6     f/8.0     f/11      f/16      f/22      f/32

Smaller Aperture Number (2.8) = Wider Aperture = More Light

Larger Aperture Number (22) = Narrower Aperture = Less Light

Lenses are not interchangeable


A lens designed for a Nikon camera is not going to work on Canon camera and vice versa


The reason is that modern day lenses have an electronic connection with the digital SLR camera

This connection relays information from lens to camera such setting changes on the lens (like aperture) from the camera body itself

 

Types of DSLR lens

• Standard Lenses

Traditionally on film cameras it was used to describe lenses in the 50mm range

Usually came with the camera

• Kit Lenses

Offered as a package with the DSLR

Generally an entry level quality zoom lens

General purpose lens designed for everyday shooting

 

• Prime Lenses

One focal length only

Are known especially at the top end for their image quality and speed faster aperture

• Telephoto Zoom Lenses

Most popular DSLR

Benefits of zoom-do not need to physically get closer to subject

• Macro Lenses

Specifically designed for shooting objects up close

• Wide Angle Lenses

Enable users to take shots with a very wide perspective

Useful for landscapes 


 SWEET...ISN'T IT?? LET DREAM COME TRUE....LET A CANON DELIGHT YOU ALWAYS





(C) jeeknowsthis.blogspot.com/information from digital-slr-guide.com/digital-photography-school.com/wikipedia.com