Posted on Mar 01, 2010 | Comments 0
Digital photography, a very accessible type of photography and therefore of art, which keeps gaining a lot of fans.
More and more people develop skills at a quite important level in photography using digital cameras, even well-known successful photographers are now using professional DSLR cameras which are easily manageable and produce high quality pictures.
Along with the evolution of technology, a lot of techniques evolved from a simple push of a button to elaborate methods of taking a very good shot.
With this evolution a lot of drawbacks of classic photography were minimized but also the usage of digital technology came with minor defects that, with a little creativity, can be transformed in unique details that give something special to a photo.
One of the minor effects that may appear in digital photography is the prismatic effect. This is an interface effect caused by the alignment of a regular pattern (a drawing on a T-shirt or the blinds from a window for example) with the pixels array from the camera’s sensor.
This effect never occurred on film because the distribution of light sensitive grains was randomly distributed in the film emulsion. There are two types of prismatic effects: the Base In prismatic effect and the Base Out prismatic effect.
Base in prismatic effect is produced by convex lens de-centered nasally and by concave lens de-centered temporarily whereas Base out prismatic effect is caused by convex lens de-centered temporarily and by concave lens de-centered nasally.
Prismatic effect usually increases with the power of the lens. Inaccuracies occurring because of prismatic effect can be optimized by changing the position of optical center by using the combination of spherical and sphero-cylindrical lenses.
Use prismatic effect in your advantage
How can this be transformed in advantage? Well the prismatic effect can be seen at medium or high zoom levels and can be avoided by tilting the camera to an acceptable angle or can be amplified to create an interesting effect that will amaze the eye.
A professional photographer can use prismatic effect to its own advantage because prismatic effect is also known to give mirror effect which can be used as a special effect to beautify the picture.
New prismatic glasses make the cross viewing easier and also help in masking the non 3D images. Cross viewing provides true 3D image with maximum clarity, brightness and color range. It’s all in the taste for colors and shapes.
Posted in: Digital Cameras