Digital Photography 101
Chapter 2: Detachable SLR Lenses and when to use them
In chapter one we covered the basics of lens technology and discovered
the difference between wide angle and telephoto lens systems. We
also saw how larger apertures are usually an indication of lens
quality as they let in more light, making faster shutter speeds
possible in dim light. We have learned that the greatest advancement
in lens technology in resent years has been the advent of silent
motors for auto focus, new glass for lens elements such as the Nikon
ED glass and Vibration Reduction or Image Stabilization.
So what difference does this make to our pictures? The greatest
indication is clarity and sharpness in low light. Many lenses can
take a great photo on a slightly overcast day and safe hand held
shutter speeds of 250th of a second, at an aperture of f11, can
be achieved even at a low ISO.
How did you go at understanding this paragraph?
The difference is when you point the camera into the shade on a
sunny day or you are photographing at dusk. That's when performance
really kicks in. You will notice the shutter speed required even
at f5.6 drops to below 60th of a second. Shudder blur and the subject
movement can make crisp and sharp photos an issue. If you are using
cheaper glass there are a few things we can do to get the shutter
speed up with a good compromise. First of all increase the ISO to
400 or even 600. ISO auto is also a great help. ISO auto is when
the camera automatically pumps up the ISO to keep the shutter speed
above the essential 60th of a second. You can also set your camera
to sharpen more to bring up the crispness. Beware because sharpening
will also increase noise or graininess.
Let's briefly go over the whys and wherefores of focal lengths,
then look at filters.
Wedding Photography Tutorial ebook
BUY
NOW
|
|
|
|
|
|
|
