Reducing noise on photos

Shooting indoor sports action using a fast shutter speed, old, gloomy churches without flash or bright landscapes where you want to slow down the shutter speed to capture movement are just some of the many situations where you will need an extreme ISO to get better results.

ISO denotes how sensitive an image sensor is. Any change from the manufacturer’s native ISO (the lowest default, which produces the optimum image quality) will have some form of electrical signal modification that results in noise.

Most DSLRs have a native ISO of around 100 or 200; beyond that, at the extreme low end of the range, quality isn’t improved. However, some manufacturers offer lower ISO values in the menu, such as ISO 50. Others use a decimalised f-stop value to indicate when it falls below the native ISO.

Both are great for using wide apertures or long shutter speeds in bright lighting conditions.

When using extreme ISO values above the highest setting, most cameras share the prefix letter H followed by an f-stop value to indicate when the ISO is being ‘pushed’ to the limit. Such images can be very noisy, but will allow you to carry on shooting in very dark conditions.

Go manual
Turn off any ISO sensitivity control modes that automatically select a suitable ISO depending on the shutter speed and aperture. You should also switch off any Scene modes and select either Manual or ?a semi-automatic exposure mode.

Reduce the noise
Any amplification or reduction of the electrical signal that’s been produced by light falling on the sensor’s CCD will suffer from noise. Dig into your DSLR’s menu and turn on any in-camera noise reduction for the very best results.

charlottebell

EDUCATION 2010 Student Tony Corbell. 2011 PPA Photography School, Dallas TX 2010 Student Kirk Tuck, Austin, TX 2000- Marketing consultant for The Rug Hook Project of MX 2004- Organizer of Travis Heights Art Show 2004 Student Dan Burkholder, Platinum printing and digital photography 2004 Student Tom Knapp, printmaking 2004 Student of Lander Rodriguiz, photoshop 2003 Author of “Tears from the Crown of Thorns” 2003 Student of Jo Brenzo Master photographer 2002 Student of Jill Skupin Bromoil photography 2002 Student of Ray Carafano Holga Camera photography 2001 Student of Lisa Mackie, NY, NY Printmaking 2001 Student of Jim Johnston San Miguel de Allende, Mexico Printmaking 1998 Instituto Allende, San Miguel de Allende Photography 1997 Instituto Allende, SMA Photography 1995&96 Elizabeth Ney Sculpture School Sculpture 1996 Boulder Sculpture Academy Sculpture 1995 Daugherty Art Center Photography 1994 Instituto Allende. San Miguel de Allende Photography 1969 University of Minnesota BS Psychology, minor Art

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