Exposure Triangle for photography

For a long time now I have been thinking to write on this. It's not rocket science, it's pretty easy to understand. The photography scholars explain exposure as a triangle that helps us to make required amount of light travel to the Image Sensor to capture good exposed pictures. The three edges of the exposure triangle are: 

1. Shutter Speed
2. Aperture 
3. ISO

One essentially has to mention the above three, when one intends to include or share the EXIF (Exposure Information). One has to have a balance between the three to take correctly exposed pictures. If you take a picture in bright sunny day and you realize that it has come too dark or too bright, then your picture is under or over exposed respectively.

Lets understand all the angles of the Exposure edges in brief:

Shutter Speed

It is the measurement of time for which the shutter is open while taking a picture. It is usually measured in seconds or fraction of second. For eg. 10sec, 1/240sec, 1/2sec.. Shutter speed is also known as Exposure Time. Higher the exposure time or slower the shutter speed, more the light falling on the sensor.

Aperture

 It is the measurement of diaphragm of the lens. It is measured as f-stops. For eg. f/5.6, f/1.8, f/16. Higher the f number, smaller is the opening and vice versa. The smaller the opening (Higher the F number) less amount of light travelling through the lens.  

ISO 

It is the measurement of sensor's sensitivity to light. Higher ISO means sensor is more sensitive to light. While Shutter Speed and Aperture helps to control the amount of light coming into the camera, ISO helps to determine how much light is needed by the sensor for good exposure. Taking images with higher ISO than required, produces noise in the image, that is why it is recommended to take pictures at lowest possible ISO levels. If you double the ISO (for example, from 200 to 400), the camera needs only half as much light for the same exposure. So if you had a shutter speed of 1/100 at 200 ISO, increasing the ISO to 400 will let you get the same exposure at 1/200 second (with Aperture unchanged).


All three are the settings to control the amount of light travelling to the sensor. One can master to maintain a balance between the three and capture good exposed pictures with practice.

Happy Clicking!!

*Image Credit :Altermundus.com

Ever thought of living on the Moon?

This capture is one of my few first clicks from my Nikon P510I and still one of my favorites. We happen to be in New Zealand that time. Such a beautiful country, people there are blessed with beautiful sea beaches, clear blue skies, splendid landscapes (volcanoes, hills, mountains..), and King size moon view too..

I was a usual evening, suddenly from my living room window I saw this giant satellite in the sky and realized that it was going behind a tall residential building opposite our's. Just waited for the right time and got lucky to capture it, the way I wanted.

Following days I waited for the Moon position to be same, as I thought I will be great if could capture the same shot but with someone standing in the balcony.
But I didn't get the moon in the same position again, leave alone someone standing there :(

Don't you think that would have made a great shot?

Light Painting

Light Painting: 

Light painting is an interesting photography technique. As the term states, it's painting with light.
It's so much fun, easy and does not require any additional accessories.

All you need is a camera, a tripod and two light sources (torch, light pen, small LED torch) and a dark room. If possible, use a light or torch (one with which you want to paint) that is small but has sharp light. I have used a light pen in the above photos.

Setting: 

Set your camera on a tripod pointing at the model or the subject around which you want to paint. Next and the most important step, set your camera's shutter speed as low as possible. The slower, the better, as it will give you that much time to paint. My camera unfortunately has the minimum speed of 8 seconds only.

Now, the fun part:

Press the shutter button, start painting. Use can make all fun things, from giving wings to your angel, fly a light kite, sit on a light chair, enjoying a lollipop or an ice cream, or gazing at your own moon. But yes make sure to complete painting within the shutter speed time. In the end just before you hear the click sound and your camera's shutter is about to close, use your second torch and flash the light on your subject or model (remember we are taking this picture in a dark room and your subject is not visible to the camera).

 THAT'S HOW TO DO IT!!!

Try it and do share your photos.

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Happy Shootinng!