ISO sensitivity expresses the speed of photographic negative materials (formerly expressed as ASA).


submitted: 5 years and 3469 days ago

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We use a digital or film camera. We need to be able to calculate exposure properly. But first, we need to understand how the aperture and the shutter work together. We also need to know how film handles light, and the relationship between film light sensitivity and f/stops.


submitted: 5 years and 3449 days ago

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The most common complaints we hear from most photographers of any experience level is "my images aren't sharp", and "I can't get my focus to lock". Most want to blame their equipment and, while there are many instances that equipment is to blame, we have found a vast majority are just simple user error. This is often down to a lack of understanding of how an autofocus (AF) system works. This tutorial will give you a better understanding of focus and sharpness, and hopefully help you take photographs that you're very happy with!


submitted: 5 years and 3448 days ago

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In traditional (film) photography ISO (or ASA) was the indication of how sensitive a film was to light. It was measured in numbers (you’ve probably seen them on films – 100, 200, 400, 800 etc). The lower the number the lower the sensitivity of the film and the finer the grain in the shots you’re taking.



submitted: 5 years and 3448 days ago

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