09. The recording medium

Resolution, Formats, Megapixels, Medium, ISO. These can all be confusing terms, especially when you are quite new to photography.

In this chapter Karl explains all about the recording medium, what all the jargon means and how it all effects your photography. In this chapter Karl also shoots a little experiment testing the difference between two cameras — one higher and one lower resolution — for a visual demonstration of resolution, pixels and ISO.

In this photography class we cover the following:

  • Common photography terms explained
  • What is the recording medium
  • Different camera formats explained
  • Resolution explained
  • Understanding pixels
  • Camera ISO
  • How to avoid noise by adjusting ISO

To learn more about some of the concepts discussed in this class, take a look at our Photography Quick Start Guide.

If you have any questions about this class, please post them in the comments section below.

NOTE: This course is available with subtitles.


    1. Hi that was a 50mm macro lens, it was an old Manual Focus FD one which I was using with an adaptor. I now use the MPE 65 macro.

  1. Minimal intro and no rubbish at the end. Just enough info to make me go out and take a couple more pics. Thank you.

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