Learning About ISO Part One

Posted by jason on Jun 7, 2010 | Comments Off

In the days of film, or so I’ve been told, there was thing thing called ISO.  Every time you doubled your ISO number you actually doubled your film’s sensitivity to light.

Enter the digital age.  We still have ISO.  Nowadays when you double your ISO number you’re doubling your sensor’s sensitivity to light.  Most dSLR sensors start at ISO 100 or 200 depending on the camera brand.

Here are six photos; each one with a doubled ISO number beginning with 200 and ending with 6400.  As you can see the photos get brighter and brighter with each photo because the sensor is more sensitive to the light allowed through the lens.

Learn more about ISO in the upcoming Alaska Photo Workshop on August 7 & 8, 2010.  We’ll be traveling to Maclaren River Lodge on the Denali Highway for some great outdoor photographic opportunities.

Several more of the topics we’ll be discussing are:

• how and why to shoot with filters
• when and why to use HDR
• how to use depth of field to your advantage
• how to get a new and different perspective on a subject

Many more topics will be covered in our two day adventure.  Be sure to drop me an email to signup today.  Space is limited so think about it real quick like and then decide to go.