The Technique of the 4 F-Stops is an approach to eliminate noise from a photograph. In his article, Guillermo Luijk explains how dynamic range works with your digital camera, then provides you with the steps to expand it. The basic technique is:
- Shot the scene in a correct exposure according to our usual workflow.
- Repeat the shot now reducing shutter speed by 4 f-stops that will be corrected in the RAW development.
- Blend in some way both images obtaining a free of noise final image.
This is not a technique for casual snapshooting. It requires a tripod and attention to your settings. But the examples are compelling, and I think it's worth testing further.
August Photo Assignment
The August photo assignment is Intersection. Make sure your entries are turned in by the end of the month. Tomorrow, I'll post the results from the July assignment (pattern). It's a great looking gallery, and I know you'll enjoy it.
Events! See the TDS Event Calendar for photography workshops, speaking engagements, and trade show appearances. I'm teaching a class on workflow this coming Saturday at Santa Rosa JC. You can still sign up or call 707-527-4372
Technorati Tags: digital photography, technique, The Digital Story
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Posted by dstory on August 15, 2007
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