2nd Lesson – Photography – Focal Length

Atul Thakur — Sat, 31 May 2008 10:26:51 +0000

Dear Members,

Focal length can be called as one of the main characteristics of the
lens as the lens is recognized by its focal length itself.

The Focal Length is mentioned on the mount of the lens. It is the
distance from the center of the lens to the film plane or the sensor
when the focus is set to infinity.

What is infinity?

Infinity is the symbol look like number 8 on the focus ring. You
need to set the lens on this symbol.

When you say 50mm lens, it means the focal length of the lens is 50
mm.

This again means the distance between the center of the lens and the
film plane or the sensor is 50 mm when the lens is set to infinity.

With regards
Atul Thakur
Editor
http://www.insidegraphics.com
It is a characteristic of wisdom not to do desperate things. – Thoreau

1st Lesson – Photography – Lense Basics

Atul Thakur — Sun, 16 Mar 2008 23:25:30 +0000

Hello,

Let us begin with the first lesson.

Lense is used to make an image bright and sharp. It has main five characteristics which we will study in the coming lessons.

Those characteristics are
1. Focal Length
2. Lense Speed
3. Lense Element
4. Angle of View
5. Depth of Field

We will start with Focal length from the next lesson.

With regards
Atul Thakur
Editor
http://www.insidegraphics.com
It is a characteristic of wisdom not to do desperate things. – Thoreau

Inside Photography

2nd Lesson – Photography – Focal Length

1st Lesson – Photography – Lense Basics