An out of focus background is the bi-product of a large aperture. A focused background is the bi-product of a small aperture.An interesting thing to note here is that while most lenses create a sharper image at about f4.0-8.0, it is not the same with all of them. You have to try several apertures to know the sweet spot of your lens. Read More
Shutter Speed
Ever wondered why a part of your image is blurry when the rest is tack sharp? You may be at a slower shutter speed. In other words, you may be letting the iris to remain open for a longer time than needed. Read More
Photography Resources you can view and buy at: Digital Photography School
ISO
You are probably reading it wrong! Its pronounced as 'AYE-SO'. International Organization for Standardization has defined the sensitivity of a camera sensor as ISO 100, ISO 200, ISO 400 and so on. Read More
Depth of Field
Ever observed an image with the background blurred to an elegant gradient or every object in focus? This is interesting! Read More