Modern lenses use a standard f-stop scale, which is an approximate of the powers of square-root 2:
f/1, f/1.4, f/2, f/2.8, f/4, f/5.6, f/8, f/11,f/16, f/22, f/32, f/45, f/64, f/90, f/128, etc.
typical one-half-stop f-number scale
 

f/1.0
f/1.2
f/1.4
f /1.7
f/2
f/2.4
f/2.8
f/3.3
f/4
f/4.8
f/5.6
f/6.7
f/8
f/9.5
f/11
f/13
f/16
f/19
f/22

Typical one-third-stop f-number scale

f/1.0
f/1.1
f/1.2
f/1.4
f/1.6
f/1.8
f/2
f/2.2
f/2.5
f/2.8
f/3.3
f/3.5
f/4
f/4.5
f/5.0
f/5.6
f/6.3
f/7.1
f/8
f/9
f/10
f/11
f/13
f/14
f/16
f/18
f/20
f/22

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Book Title: Understanding Exposure - How to shoot great photographs with a film or digital camera
Author: Bryan Peterson
Year written/published: 2004
Book Source: Google Books, Library
Summary: 
My Comments: being armed with a new digital camera, i have found the greatest pleasure comes in the ultimate control of the exposure for each photo we take… Bryan Peterson has been [...]

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Little People -  A tiny street art project.
I just love art works that doesn’t look lke the conventional type all wrapped up and put up for display. Little People by Slinkachu is one such project! How cute is that!

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Book Title: 500 Digital SLR Hints, Tips and Techniques - The easy, all-in-one guide to getting the Best out of your digital SLR
Author: Chris Weston
Year written/published: 2006
Book Source: Google Books, Library
Contents page:

Camera Set-up
Image Quality
Getting Ready
Using your DSLR
Flash Photography
Useful Resources
Different Subjets
Camera Care
External Devices

Some extracts:
#33: I have found most useful playback screen to be the highlights screen, [...]

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Hey, are you lonely?
Has summer gone so slowly?
We found the ground,
but that damage was done.
It’s cold as you fade into the sun.
Where’d you go? To me?
But you’re alive!
Well, it’s only
fallen frames, they told me.
You stand out, it’s so loud…
and so what if it is.
It’s cold when you fade into the wind.
Where’d it go to?
Chorus:
So [...]

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I have been in love with podcasts and iTunes. When reading books are not the luxury (crowded commuting or just a mood for something different other than reading), listening to podcasts while on the go is always a step ahead… my list includes…

Amateur Travels
QDT
Beautiful Places in HD
The Welch Way
Photoshop killer tips
Pixel Perfect
Tekzilla
Pop Siren
TWIP
SKywatch
65 bits
Travel with [...]

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I just discovered a genre of art form - creating pictures with ASCII characters! yes i have seen bits and pieces of them, but i never knew there is such a serious art form - ASCII ART! And one of my fav ASCII art has to be from Chris!
 

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I’m in love with this shop called PRINTS… A stationery shop based on the minimalism design. Check out their equally simple and classy website

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Soduko - a japanese stylec solve-the-magic square game. It’s been really popular now… no??

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Name: Mount Rushmore
Object: Monumental granite sculture
Artist:  Gutzon Borglum
Dimension: 18m high sculture
Date of creation: 3 March 1925
About: it has the sculture head of 4 Presidents of United States depicting the first 150 years of history.

George Washington (1732–1799)
Thomas Jefferson (1743–1826)
Theodore Roosevelt (1858–1919)
Abraham Lincoln (1809–1865)

Where to find it: Mount Rushmore National Memorial, near Keystone, South Dakota, United States
 

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I’m in love with this new art form that i saw - Electric Canvas. These artists transforms huge building facades into magnificent designs and themes using only light projections. Now talk about arts, physics and engineering all coming into play!

picture credit

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and so i learnt the 10 important terms for the basics of photography:

shutter speed
exposure
aperture
depth of field
lens
ISO
metering
white balance
focal length
DSLR technology

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How is a DSLR different form a film SLR?

and a review on the Canon 40D

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Camera lens… some links…

phographers.co.uk
photo.net
cambrige in colour

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The metering system in a digital camera measures the amount of light in the scene and calculates the best-fit exposure value based on the metering mode. There are 3 types of metering mode:

Overall Metering (Multi Segment/Zone Metering)
Spot/Partial Metering 
Center Weighted Metering

Some links about metering:

digital photography school
dpreview
ephotozine
weather scapes

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White Balance (WB) is the process of rendering the colours in the photograph so that it appears more neutral. Some times there is a blue or yellow cast and this can be removed with shifting the white balance so that original white colours looks white!
Some Links…

cambridge in colour
wiki
photoxels
dpreview
photoshop tutorials

Measurement of White Balance can be done [...]

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Some links on how to create those shadows…

Ashley’s
mindbluff
Hand Shadows to be thrown on the Wall - Gutenberg

and a video to show it all…

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Focal length of a camera lens system is a measure of how strongly it converges (focuses) light. A photographic lens is used in a camera to make images of the opbjects on the film or other image sensors.
Some links…

wiki: focal length
wiki: photographic lens
photoxels: Focal length
focal length

Measurement of focal length is done in mm. nowadays:

Wide-angle lens 18mm, 20mm, [...]

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ISO (International Organisation for Standards) is also the Film speed in photography. Film speed is the measure of photography film’s sensitivity to light. Film with lower sensitivity (lower ISO) requires a longer exposure and is thus called a slow film, film with higher sensitivity (higher ISO) can shoot the same scene with a shorter exposure and [...]

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Depth of Field (DOF) is the portion of the photograph that is in focus as compared to the rest of the areas of the photo.
Factors that depends on DOF:

Subject distance from the camera
Focal length
aperture

Some links on DOF:

wiki: DOF
cambridge in colour
mir.com
DOF calculator
ephotozine

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