Thanks useful information: 
What better way to start 2011 with a new series of challenges for the AP members learning how to use their cameras. So if you are New To Photography, give these challenges a go, learn to get off Auto Mode, and understand how camera features work, and interact with each other.
This challenge to our members that want to learn to take control of their digital camera is based on the Learning Centre topic : Experimenting with Aperture. You can also use the f-stop guide to understand more : http://www.ausphotography.net.au/for...y:f_stop_chart
We would like you to set your camera to Aperture mode (sometimes called A or Av mode). Check your camera manual in need, on how to set your camera to Aperture mode.
THE CHALLENGE: We want you to go out and take two photos of the same subject. One at the largest aperture your lens will allow and one at the smallest. So take one photo at f4.5 (or larger - remember smaller F stop numbers are actually bigger apertures) and one at f22, of the same subject. Post both photos in this thread, with comments about what differences you notice between the two photos , what the effect of aperture had on the shutter speed, and how you could use this difference to make your future photography more creative.
The full New To Photography Learning Centre is in the Ausphotography Library, under New To Photography
Looking forward to seeing your two photos presented for the challenge and your discussions about what you have learnt from the challenge, and how changing the aperture setting can visually affect the resultant photos. Also remember to look at what changing the aperture does to the other camera settings. What happens to the shutter speed, and why does it happen
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