This is a continuing discussion of meta data, the additional information that a camera attaches to each photo you take, and how that can assist you in becoming a better sports photographer. Since Picasa is free and currently my favorite photo application let’s review the meta data it provides and what that data means. Below I have displayed the meta data for a photo which I obtained by right clicking on the photo and selecting properties.
At the top of the box you see a number of meta data information that we are used to looking at such as filename, location, size and date The additional meta data which we don’t often look at but which can be helpful in improving your sports photography comes next. I will explain each item:
Dimension = 3456 x 2304 pixels
This particular photo is 3,456 pixels wide (horizontal) by 2,304 pixels high (vertical). Read the article on pixels to better understand, but essentially the photo is made up of little dots and this represents how many little dots there are.
Camera Make = Canon
I took this photo with a camera made by Canon
Camera Model = Canon EOS-1D Mark III
This is the model of the Canon camera I used which is an EOS-1D Mark III (sweet camera)
Camera Date = 2009-12-03 18:20:11
I took the photo on December 12th 2009 at 6:20pm.
Resolution = 3456 x 2304
Notice this is the same as the “dimension” representing how many pixels or little dots make up the picture.
Orientation = Normal
This field stores the orientation of the photo. Newer cameras will detect if the photo was taken horizontally or vertically. Actually 8 different positions are supported and more and more photo software supports this field which helps to ensure that whenever you are viewing your photo you are viewing it right-side up.
Flash = Not Used
I did not use a flash for this photo
Focal Length = 135.0mm
I was using a 70-200mm lens and this number represents the focal length the lens was set at. The larger this number the greater is the magnification of distant objects. The lower this number the wider the angle of view.
35mm equivalent = 173mm
Because the CCD of this digital camera (and most are the same), is smaller than the sensitive area of 35mm film, this number represent the equivalent magnification for a 35mm camera. In other words it would have been the same as shooting 35mm film with the lens set at 173mm.
In my next blog I will finish describing the rest of the fields.