Adding a vignet involves the lightening or darkening of the edges of a picture to draw the viewer's eye towards the center. Most lenses have a natural vignetting effect as the lens darkens towards the edges and lens correction software can be used to remove it in post-processing.
Digital Photography Techniques
With the time for summer vacations upon us, I thought I'd share some of my post-processing workflow. I've found that most landscape pictures can use some help, especially in taking out that milky look that appears in the atmosphere with far off subjects.
What is High Speed Sync flash and how do I use it?
Canon and Nikon speedlights, otherwise known as accessory flashes, have the ability to do high speed flash syncronization. Sound complicated? Why do you need it?
The other day, a photographer asked me when they should use the plastic dome on their speedlight. They said a professional wedding photographer told them to get one to soften the shadows in their portraits. I asked where the professional told them to use it and they said outdoors. It is a common fallacy that domes can be used to soften light from a flash outdoors. I do a lot of work in Balboa Park and I often see professional photographers using a diffusion dome on their flash in open conditions.
The Sunny 16 Rule allows you to set correct daylight exposures without the aid of a light meter. It uses a combination of observation and calculation to set the aperture and shutter speed. But why, when all modern digital cameras have an internal light meter and modes that set shutter speeds or apertures automatically, would I bother to estimate exposures for myself?
What is depth-of-field?
Depth- of-field can be described as the part of the photograph in front and behind the subject that also appears to be in focus. I use the term “appears”, because only one part of the picture can be truly in focus, but in some photographs the out-of-focus portion is almost as sharp as the rest of the picture.
We like to use a shallow depth-of-field when we want to concentrate the viewer’s attention on the subject. Shallow depth-of-field makes the subject pop out of the blurred background and the background seems more uncluttered when we can’t distinguish detail.