Depth-of-field

Concept, Easy reading, Filters, Tests

Depth-of-field (DOF) depends on several variables, primarily on aperture and on your distance from your subject (physically and/or optically). Aperture…

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The Crop Factor

Concept, Easy reading, Lenses, Visualization

Help! I have no idea what on earth is thecrop factor Once upon a time photographers used to shoot on...
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Exposure Compensation and Nighttime Photography

Concept, Easy reading, Tests

Regardless of what the scene in front of your camera is, the internal (evaluative or matrix) metering system will push the average brightness of the image towards the medium grey. A nighttime cityscape is, however, far from medium grey. It contain…

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Sensitivity (ISO) and Noise

Concept, Easy reading, Tests

When you change your shutter speed, you enter the realm of blur. (Wanted or unwanted.) The price you pay for longer shutter speeds is blur (motion blur and/or camera shake). When you change aperture, you enter the realm of depth-of-field. The pric…

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Cheat sheets

Cheat Sheet, Concept, Easy reading, Visualization

Here is a small collection of “cheat sheets” that I collected from the internet. (The respective sources are always indicated on the images.) They are about the same concepts that we have talked about but it’s always useful to find as many visuali…

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The Dynamic-Range Giraffe and the Histogram

Concept, Easy reading, Visualization

Dynamic Range Dynamic range is a simple concept: it is the difference between the darkest and the brightest parts of...
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Aperture / Shutter Speed

Concept, Easy reading, Visualization

You know: it’s (almost) all about Aperture and Shutter Speed! If graphs help you visualize the relationship between the two,…

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